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LangChain AI Agent Agencies

LangChain is the most widely adopted open-source AI agent framework, used in an estimated 60% of production deployments. It provides composable primitives — chains, agents, tools, memory, and retrievers — that developers wire together to build LLM-powered applications. Combined with LangGraph for stateful workflows and LangSmith for observability, it forms the most complete agentic development stack available. Every serious LangChain AI agent development agency and AI automation agency relies on this ecosystem daily. Whether you need to hire LangChain developers for a RAG pipeline or a complex multi-agent system, the breadth of integrations (200+ LLM providers, vector databases, document loaders) ensures you can build almost any AI agent development company workflow on top of it.

163
Agencies Listed
$9k
Avg. Min. Project
100%
Remote-Friendly
1975
Case Studies
FRAMEWORK
92k GitHub Stars2.1M/wk PyPIPython/JSSince 2022MIT
When to Use LangChain
Your project requires RAG over large internal document sets or knowledge bases
You need maximum flexibility in orchestration — not locked into an opinionated model
Your team needs LangSmith for production tracing, evaluation, and prompt management
You're building complex stateful workflows with conditional branching using LangGraph
You need breadth of integrations: 200+ LLM providers, vector DBs, document loaders
What to Look for in an Agency
LangSmith deployed in production — this separates serious teams from hobbyists
LangGraph experience for complex workflows, not just basic LCEL chains
Published case studies with specific metrics: latency, cost per run, accuracy
Vector database expertise (Pinecone, Weaviate, pgvector) for RAG-heavy work
Clear evaluation methodology — how do they measure whether the agent is working?
Typical LangChain Projects
Enterprise RAG chatbots over internal knowledge bases and SharePoint
Document processing and data extraction pipelines
Multi-step research and competitive intelligence agents
Customer support automation with CRM tool calling
Custom AI assistants with persistent memory and multi-tool use

163 LangChain Agencies

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Daytona
New York City, NY · 21-50
20 cases
LangChain

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From $25k
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Reworkd
San Francisco, CA · 21-50
6 cases
LangChainOpenAIAgentGPT

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From $25k
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Kalibr
Remote · 1-5
7 cases
LangChainCrewAIOpenAIAnthropic

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From $5k
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abab.ai
Remote · 6-20
11 cases
LangChainLangGraphAutoGen

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From $5k
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Bluebash
Remote · 6-20
20 cases
LangChainOpenAI

We are a team of experts working on Web Design, Software Development & Custom Web Development. Expert in the ...

From $5k
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PurpleAILAB
Remote · 6-20
3 cases
LangChainLangGraph

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From $5k
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Redis Developer
Remote · 21-50
20 cases
LangChainOpenAI

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From $15k
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Datawhale
Remote · 21-50
20 cases
LangChainLangGraphAnthropic

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From $25k
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CloudWeGo
Remote · 21-50
20 cases
LangChain

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From $25k
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Activeloop
Remote · 6-20
20 cases
LangChain

Activeloop team created Deep Lake, the database for AI. Stream, visualize, query, version all AI data - embedd...

From $15k
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coze-dev
Remote · 21-50
20 cases
LangChainOpenAI

Next-generation AI chatbot building platform. Quickly create bots without coding and publish them on various p...

From $25k
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OpenLIT
Remote · 6-20
4 cases
LangChainOpenAIAnthropicMistral

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From $10k
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BCG X
Remote · 6-20
11 cases
LangChainOpenAI

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From $15k
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Storia AI
Remote · 6-20
5 cases
LangChainOpenAIAnthropic

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From $10k
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SmythOS
Remote · 6-20
11 cases
LangChainn8nOpenAI

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From $10k
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Pica
Remote · 6-20
20 cases
LangChainOpenAIAnthropic

Integrations made effortless. Fueling apps, agents, and workflows in an AI-first world....

From $10k
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vLLora
Remote · 1-5
5 cases
LangChainOpenAIAnthropic

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From $5k
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Evil Martians
Remote · 21-50
20 cases
LangChain

Evil Martians, an extraterrestrial product development consultancy and COSS team. Offices in New York, Porto, ...

From $25k
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Airbyte
Remote · 21-50
20 cases
LangChainOpenAIAnthropic

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From $25k
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Corpus OS
Remote · 1-5
1 cases
LangChainCrewAIAutoGenLlamaIndex

The Universal Interoperability Layer for Agentic Frameworks - Langchain, LlamaIndex, Autogen, Crew AI, Semanti...

From $5k
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HOL (Hashgraph Online)
Los Angeles, CA · 6-20
20 cases
LangChainLlamaIndexOpenAI

Interoperable, open-source decentralized specifications and tools powering the new agentic internet. ...

From $15k
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MultiMindSDK-Framework
Remote · 6-20
14 cases
LangChain

Build AI Superpowers with One AI Framework: Agents, Models, Context, Orchestration. Anywhere. SDK for Python &...

From $5k
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Future AGI
Remote · 6-20
8 cases
LangChainn8nOpenAI

World’s first comprehensive evaluation and optimization platform to help enterprises achieve 99% accuracy in A...

From $10k
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VirtualPatientEngine
Remote · 6-20
6 cases
LangChainLangGraph

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From $5k
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Nutrient (formerly PSPDFKit)
Remote · 21-50
20 cases
LangChainOpenAI

Nutrient delivers the building blocks for modern businesses with SDKs, cloud-based document processing, low-co...

From $15k
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last9
Remote · 21-50
20 cases
LangChainOpenAIAnthropic

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From $5k
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LazyAGI
Remote · 6-20
9 cases
LangChainLlamaIndex

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From $15k
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Alchemyst AI
Remote · 6-20
20 cases
LangChain

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From $5k
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Agentailor
Remote · 6-20
9 cases
LangChainLangGraphOpenAI

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From $5k
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Decodo
Remote · 6-20
20 cases
LangChainn8n

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From $10k
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artinet
Remote · 6-20
11 cases
LangChainOpenAIAnthropic

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From $5k
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Firelink Data
Remote · 1-5
4 cases
LangChainOpenAI

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From $5k
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Langflow
Remote · 21-50
15 cases
LangChain

Langflow is a powerful tool for building and deploying AI-powered agents and workflows....

From $25k
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Zyni Innovations
Remote · 1-5
1 cases
LangChainLangGraphOpenAI

We focus on developing AI-native applications designed to solve real-world problems. Currently developing Test...

From $5k
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Unstacked Apps
Remote · 1-5
2 cases
LangChain

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From $5k
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NeuroverseOS
Remote · 1-5
3 cases
LangChain

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From $5k
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Agnostiq
Remote · 6-20
20 cases
LangChain

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From $10k
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Poly186 AI DAO
Remote · 6-20
20 cases
LangChainAutoGenOpenAI

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From $5k
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teddynote Lab
Remote · 6-20
20 cases
LangChainLangGraph

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From $15k
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Towards AI
Remote · 6-20
20 cases
LangChainLlamaIndex

The leading AI community and content platform focused on making AI accessible to all....

From $15k
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Vectara
Remote · 21-50
20 cases
LangChain

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From $15k
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DoWhile
Remote · 6-20
11 cases
LangChainCrewAIOpenAI

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From $5k
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Mozilla.ai
Remote · 21-50
20 cases
LangChain

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From $25k
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Tavily AI
Remote · 21-50
20 cases
LangChainCrewAIn8n

Tavily Search API is a search engine optimized for LLMs and RAG, aimed at efficient, quick and persistent sear...

From $25k
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Chimera Protocol
Remote · 1-5
2 cases
LangChain

Architecting the Neuro-Symbolic-Causal future of AI. Home of Project Chimera and CSL. Verifiable governance an...

From $5k
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Version IO
Remote · 1-5
4 cases
LangChain

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From $5k
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agentx-protocol
Remote · 1-5
5 cases
LangChain

Open framework for autonomous AI agents on Solana — build, deploy & coordinate on-chain agents with the AgentX...

From $5k
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Gopher Security
Remote · 6-20
20 cases
LangChainLangGraph

On-Demand MCP server & gateway with enterprise security, connecting agentic workflows to any enterprise stacks...

From $5k
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TaskingAI
Remote · 6-20
3 cases
LangChain

TaskingAI: Streamlining LLM development with a developer-friendly cloud platform for efficient AI project exec...

From $10k
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Pezzo
Remote · 6-20
13 cases
LangChainAutoGenOpenAI

Pezzo is an AI development toolkit designed to streamline prompt design, version management, publishing, colla...

From $10k
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Viddexa AI
Remote · 6-20
4 cases
LangChainLlamaIndexOpenAIAnthropic

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From $5k
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Atome
Remote · 6-20
10 cases
LangChain

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From $5k
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Steamship
Remote · 6-20
20 cases
LangChain

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From $15k
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Writesonic
Remote · 6-20
11 cases
LangChainLlamaIndexOpenAIAnthropic

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From $10k
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MindInventory
Remote · 21-50
20 cases
LangChain

MindInventory, a leading digital transformation company redefines digital experiences for businesses to thrive...

From $10k
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talkd.ai
Remote · 6-20
11 cases
LangChain

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From $10k
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Protosec Research
Remote · 6-20
5 cases
LangChainOpenAI

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From $5k
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TensorOps
Remote · 6-20
4 cases
LangChainOpenAI

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From $5k
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hal9.ai
Seattle, WA · 6-20
11 cases
LangChainDSPy

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From $5k
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agi-merge
Remote · 6-20
10 cases
LangChainOpenAI

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From $5k
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JEECG官方开源
Remote · 21-50
19 cases
LangChainOpenAIOllama

企业级AI低代码平台研发公司,致力于国内开源事业,打造JEECG低代码平台、JimuReport可视化报表、敲敲云零代码平台。 (以往荣誉: 获得CSDN专家访谈,ITEYE访谈、连续五年中国最火TOP5、十大优秀开源...

From $25k
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Allient
Remote · 6-20
10 cases
LangChain

Our mission is to harness the boundless potential of technology to unlock the inherent capabilities of individ...

From $5k
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AI Product Course
Remote · 1-5
4 cases
LangChainOpenAIMistralOllama

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From $5k
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Aesthisia | DevOps & Automation Services
Remote · 6-20
11 cases
LangChainOpenAIOllama

Aesthisia is a leading DevOps service provider enabling an organization to deliver a better and faster applica...

From $5k
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AttackIQ
San Diego, CA · 6-20
9 cases
LangChain

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From $5k
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Tableau
Seattle, WA · 21-50
20 cases
LangChainLangGraph

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From $25k
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Full Stack with Lawrence
Remote · 6-20
20 cases
LangChainOpenAI

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From $5k
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ZON
Remote · 1-5
8 cases
LangChainLangGraphDSPy

Zero Overhead Notation - A human-readable data serialization format optimized for LLM token efficiency....

From $5k
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Noqta | نقطة
Remote · 6-20
20 cases
LangChainOpenAIOllama

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From $5k
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GPTStonks
Remote · 1-5
5 cases
LangChainLlamaIndex

GPTStonks provides a financial personal assistant to help retail investors make informed decisions....

From $5k
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IBM Deep Search
Los Angeles, CA · 21-50
20 cases
LangChainLlamaIndex

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From $25k
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MyScale
Remote · 6-20
20 cases
LangChainLangGraph

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From $10k
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Jargons.dev
Remote · 1-5
4 cases
LangChainOpenAI

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From $5k
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Stylsheets Team
Remote · 1-5
6 cases
LangChainOpenAI

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From $5k
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Stanford Open Virtual Assistant Lab
Remote · 21-50
20 cases
LangChainOpenAIAnthropicMistral

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From $25k
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Bangla RAG
Remote · 1-5
1 cases
LangChain

We are developing PoRAG, a Bangla RAG Pipeline for easy interaction with Bengali text, providing accurate resp...

From $5k
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MetaGLM
Remote · 6-20
17 cases
LangChainOllama

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From $15k
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QWED
Remote · 6-20
10 cases
LangChainLlamaIndexOpenAIAnthropic

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From $5k
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WeAnalyze
Remote · 1-5
5 cases
LangChainOpenAI

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From $5k
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Janus LLM
Remote · 1-5
4 cases
LangChain

Modernization tools developed under MITRE’s Independent Research and Development Program....

From $5k
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llm-use
Remote · 1-5
1 cases
LangChainOpenAIAnthropicGroq

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From $5k
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Prismadic
Remote · 1-5
8 cases
LangChainMistral

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From $5k
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The Data Dilemma
Los Angeles, CA · 1-5
6 cases
LangChainOpenAIGroq

The Data Dilemma is an open-source initiative developing AI tools to address real-world challenges in speech, ...

From $5k
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kookaburra
Remote · 1-5
4 cases
LangChainOpenAI

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From $5k
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omics-os
Remote · 1-5
6 cases
LangChainLangGraph

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From $5k
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Proact0
Remote · 1-5
8 cases
LangChainLangGraph

The open-source hub setting global AX standards, enabling efficient systems on a unified AX foundation....

From $5k
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pollinations.ai
Remote · 21-50
10 cases
LangChainLangGraph

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From $25k
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STX Next
Los Angeles, CA · 21-50
20 cases
LangChainLangGraph

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From $5k
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Tadata
Remote · 6-20
10 cases
LangChainLangGraph

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From $10k
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Endevsols
Remote · 1-5
2 cases
LangChainLangGraphOpenAI

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From $5k
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Synergy AI
Los Angeles, CA · 1-5
6 cases
LangChainLangGraph

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From $5k
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Okahu Agentic Observability + Evaluations Demos
Remote · 6-20
14 cases
LangChainLangGraphCrewAILlamaIndex

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From $5k
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Mindify AI
Remote · 6-20
13 cases
LangChainLangGraph

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From $5k
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Open eXecution Protocol (OXP)
Remote · 1-5
4 cases
LangChainLangGraph

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From $5k
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Neul Labs
Remote · 6-20
20 cases
LangChainLangGraphCrewAIAutoGen

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From $5k
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MSU Denver Computer Sciences
Remote · 6-20
6 cases
LangChainLangGraph

Building community-centered technology through research, education, and cybersecurity...

From $10k
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StabRise
Remote · 1-5
8 cases
LangChainLangGraph

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From $5k
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Timbr.ai
Remote · 6-20
13 cases
LangChainLangGraph

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From $5k
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The Boring Education
Remote · 6-20
13 cases
LangChainLangGraph

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From $5k
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Aiuda Labs
Remote · 6-20
20 cases
LangChainLangGraph

Our commitment is to empower your business with effortless access to cutting-edge AI technologies....

From $5k
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Aparsoft
Remote · 1-5
5 cases
LangChainLangGraphOpenAIMistral

AI-Powered Innovation for Digital Transformation | Quick AI Solutions in 10-15 Days | Enterprise SaaS Platform...

From $5k
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OpenLib x402
Remote · 1-5
4 cases
LangChainLangGraph

AI-native x402 integrations for the Solana ecosystem. Open-source. Accelerate. Available on PyPI + npm....

From $5k
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Intelligex
Remote · 1-5
2 cases
LangChainLangGraphOllama

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From $5k
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daslearning.in
Remote · 6-20
14 cases
LangChainLangGraphOllama

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From $5k
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Fourbic
Remote · 6-20
20 cases
LangChainCrewAI

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From $5k
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AgentPayy
Remote · 1-5
4 cases
LangChainCrewAI

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From $5k
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AIR Blackbox
Remote · 6-20
13 cases
LangChainCrewAIAutoGenOpenAI

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From $5k
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machineid-io
Remote · 1-5
7 cases
LangChainCrewAIOpenAI

External execution authority for autonomous systems. Every run validates. Authority lives outside the runtime....

From $5k
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Vex
Remote · 1-5
7 cases
LangChainCrewAIOpenAI

Vex is Runtime Reliability for AI Agents. Detect drift. Auto-correct hallucinations. Ship AI agents your users...

From $5k
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Amorce.io
Remote · 6-20
9 cases
LangChainCrewAIn8n

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From $5k
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DAgent
Remote · 1-5
7 cases
LangChainCrewAI

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From $5k
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Tradekix AI
Remote · 1-5
3 cases
LangChainCrewAI

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From $5k
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GeniusKitchen.ai
Remote · 1-5
6 cases
LangChainLangGraphCrewAIAutoGen

A service of IzzyAcademy.ai - building a community of intentional AI engineers, architects & developers lookin...

From $5k
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Gradients & Grit
Remote · 1-5
1 cases
LangChainLlamaIndexHaystack

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From $5k
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ZeusDB
Remote · 1-5
8 cases
LangChainLlamaIndex

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From $5k
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The Geekist
Remote · 6-20
16 cases
LangChainLlamaIndexOpenAIOllama

Geekist celebrates 20 years of coding, creativity, and curiosity. A space where mastery meets play, offering t...

From $5k
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Nextech-Fusion GmbH
Remote · 1-5
6 cases
LangChainHaystack

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From $5k
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Thesys
Remote · 6-20
16 cases
LangChainn8n

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From $10k
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Agentic Insights LLC
Remote · 6-20
10 cases
LangChainOpenAIGroqOllama

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From $5k
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Couchbase Ecosystem
Remote · 6-20
20 cases
LangChainLangGraphn8nSemantic Kernel

Developer Tools and Integrations to Couchbase Server, Couchbase Capella, and Couchbase Mobile...

From $5k
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YugabyteDB Samples
Remote · 21-50
20 cases
LangChainLlamaIndexOpenAIOllama

YugabyteDB code samples, examples and applications for doers, builders and disruptors!...

From $10k
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Mokksy
Remote · 1-5
3 cases
LangChainOpenAI

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From $5k
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Agora Lab
Remote · 6-20
20 cases
LangChainOpenAI

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From $10k
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lunary
Remote · 6-20
18 cases
LangChainOpenAIAnthropicGroq

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From $5k
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MindsDB Inc
Remote · 21-50
20 cases
LangChainOpenAIGroqOllama

Query Engine for AI Analytics: Build self-reasoning agents across all your live data...

From $25k
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Beehive lab
Remote · 21-50
20 cases
LangChain

Beehive lab is part of the Advanced Processor Technologies Group at the University of Manchester specializing ...

From $10k
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La Boulangerie MC
Remote · 6-20
20 cases
LangChainMistral

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From $5k
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Model Gateway
Remote · 1-5
3 cases
LangChainOpenAIOllama

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From $5k
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Spring Petclinic community
Remote · 21-50
20 cases
LangChainOpenAIOllama

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From $25k
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BragAI
Remote · 6-20
3 cases
LangChain

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From $10k
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Epsilla
Remote · 6-20
20 cases
LangChain

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From $5k
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OPEA [Open Platform for Enterprise AI]
Remote · 21-50
20 cases
LangChainHaystack

OPEA is an ecosystem orchestration framework to integrate performant GenAI technologies & workflows leading to...

From $25k
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Ethora by Dappros
Remote · 6-20
20 cases
LangChainOpenAI

Ethora engine. Dappros backend infrastructure platform. Future mobile/web, AI, messaging, web3 technologies, b...

From $5k
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Denser
Remote · 1-5
7 cases
LangChainOpenAI

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From $5k
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Superlinked
Remote · 6-20
11 cases
LangChain

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From $10k
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Oracle
Austin, TX · 21-50
20 cases
LangChainOpenAI

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From $25k
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Nuclia
Remote · 6-20
20 cases
LangChain

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From $10k
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arconsis IT-Solutions GmbH
Remote · 6-20
20 cases
LangChain

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From $5k
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DSBA 6010: Applications of LLMs
Remote · 6-20
11 cases
LangChain

UNC Charlotte School of Data Science Fall 2024 course - DSBA 6010: Special Topics - Applications of LLMs...

From $5k
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RadioAstronomy.io
Remote · 6-20
18 cases
LangChain

AI-enhanced research infrastructure for radio astronomy, SDR signal processing, and scientific computing, buil...

From $5k
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Simone Siega – Academic Projects
Remote · 1-5
5 cases
LangChainOllama

Academic projects developed during high school and university studies in computer science....

From $5k
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ConvoStack
Remote · 1-5
4 cases
LangChain

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From $5k
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Mythic Agents
Remote · 6-20
20 cases
LangChain

A centralized area for installable Mythic Agents based on https://github.com/MythicMeta/Mythic_External_Agent...

From $15k
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Musabdulai IO
Remote · 1-5
3 cases
LangChainOpenAI

AI Security & Infrastructure. Building automated red-teaming harnesses and secure RAG pipelines....

From $5k
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NeuroBrain
Los Angeles, CA · 1-5
4 cases
LangChain

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From $5k
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Oconva - Open Conversational AI
Remote · 6-20
9 cases
LangChain

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From $5k
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Orbit
San Francisco, CA · 6-20
20 cases
LangChain

...

From $10k
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neosapience
Remote · 21-50
20 cases
LangChainn8n

Neosapience, an artificial being enabled by artificial intelligence, will soon be everywhere in our daily live...

From $5k
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GLOBALPROJOB LTD
Remote · 1-5
3 cases
LangChainOpenAI

AI-powered software solutions and innovation hub based in the UK. Specializing in AI automation, smart devices...

From $5k
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Quarkiverse Hub
Remote · 21-50
20 cases
LangChain

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From $15k
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Prema Vision
Remote · 6-20
13 cases
LangChain

...

From $5k
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DataSQRL
Remote · 6-20
13 cases
LangChainOpenAIAnthropic

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From $5k
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Mayflower GmbH
Remote · 21-50
20 cases
LangChain

...

From $5k
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Coplay
Remote · 6-20
3 cases
LangChainOpenAIAnthropic

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From $10k
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NLKit
Remote · 6-20
11 cases
LangChainOpenAI

...

From $5k
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LabLab.ai
Remote · 21-50
20 cases
LangChainCrewAIOpenAI

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From $15k
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Aurelio AI Labs
Remote · 6-20
20 cases
LangChain

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From $15k
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Securade.ai
Remote · 6-20
14 cases
LangChain

...

From $5k
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Replicate
Remote · 21-50
20 cases
LangChainOpenAI

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From $25k
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AI21Labs - Organization
Remote · 6-20
20 cases
LangChain

AI21 Labs is an AI lab & product company whose mission is to reimagine the way we read and write by making the...

From $10k
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OpenCX
Remote · 6-20
7 cases
LangChain

...

From $15k
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Hyperbrowser
Remote · 6-20
20 cases
LangChainn8n

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From $15k
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Arcade Data
Remote · 6-20
19 cases
LangChainHaystack

...

From $5k
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LangChain Agency — Frequently Asked Questions

What is a LangChain agency?+

A LangChain agency is a software development company that specializes in building AI agent systems using the LangChain framework. They typically have deep expertise in LLM integrations, RAG pipelines, tool calling, and production deployment using LangSmith for observability and evaluation.

How much does it cost to hire a LangChain development agency?+

Based on our directory of LangChain agencies, the average minimum project size is around $9,000–$10,000. Full LangChain projects typically range from $10,000 for a simple RAG chatbot to $100,000+ for complex multi-agent systems with custom integrations and production hardening.

How long does a LangChain project take to build?+

A simple LangChain RAG chatbot can be built in 2–4 weeks. A production-grade multi-agent system using LangGraph, with evaluation pipelines and full LangSmith observability, typically takes 8–16 weeks from scoping to deployment.

What is the difference between LangChain and LangGraph?+

LangChain provides composable primitives for building LLM applications. LangGraph is LangChain's graph-based extension for stateful, cyclical agent workflows. Most experienced LangChain agencies use LangGraph for any workflow that requires loops, conditional branching, or human-in-the-loop checkpoints. Simple RAG chatbots still use basic LangChain chains.

What questions should I ask a LangChain agency before hiring?+

Ask: Do you use LangSmith in production? What LangGraph patterns have you shipped to production? Can you share a case study with latency and cost metrics? How do you handle agent failures mid-task? What vector database do you recommend for my data volume and query patterns?

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