Best Langchain Alternatives
Updated February 2026
Langchain
LangChain’s suite of products supports AI development
Looking for alternatives to Langchain? We found tools across 5 categories that offer similar functionality. The top-rated alternatives include Merlin Unified API (5.0★) , Velvet (5.0★) , and LastMile AI (5.0★).
Langchain vs Top Alternatives
| Tool | Rating | Reviews | Pros | Cons |
|---|---|---|---|---|
|
Langchain
|
★★★★★ | 95 | 17 | 1 |
Merlin Unified API
|
★★★★★ | 3 | 0 | 0 |
Velvet
|
★★★★★ | 2 | 0 | 0 |
LastMile AI
|
★★★★★ | 14 | 20 | 1 |
DeepAI
|
★★★★★ | 1 | 0 | 0 |
AINave
|
★★★★★ | 7 | 0 | 0 |
Best LLMs Alternatives to Langchain
Merlin Unified API
One Super API for all AI models (with 90% less error rates)
Velvet
AI Gateway & Platform
AINave
Navigate the world of AI with ease
AI/ML API
One API 200+ AI Models Accessible 24/7
Mistral AI
Open and portable generative AI for devs and businesses
Personal Assistant by HyperWrite
The first AI agent that can operate your browser.
Unbody
AI for private data, anywhere, any format, in 1 line of code
LangWatch Agent Simulations
Agentic testing for agentic codebases
Desearch
First Decentralized AI Search for Builders & Agents
Viable
Use feedback to drive product innovation & customer growth
V7 Go
Automating multi-modal tasks using GenAI reliably, at scale.
LLMWare
Deploy AI privately and securely with small language models
TensorBlock Forge
One API for all AI models
Kypso
Your engineering workflows, reimagined
Vela Partners
Leading quant vc
Qwen 1.5 MoE
Highly efficient mixture-of-expert (MoE) model from Alibaba
Confident AI
all-in-one LLM evaluation platform
DataMotto
Make Your Raw Data Clean and Ready with AI
Quanty
AI-Powered Financial Analysis Chatbot
Farspeak
Build smart apps in minutes (beta)
Epsilla (YC S23)
All-in-one platform to create AI agents with your knowledge
Unsloth
Open-source finetuning of LLMs
Pixelagent
Agent engineering blueprint for building your own agent sdk
MakeHub.ai
LLM Provider arbitrage to get the best performance for the $
Best Unified API Alternatives to Langchain
LastMile AI
AI developer platform for engineering teams
Merlin Unified API
One Super API for all AI models (with 90% less error rates)
DeepAI
Easily build the power of AI into your applications
AI/ML API
One API 200+ AI Models Accessible 24/7
liteLLM
One library to standardize all LLM APIs
APIPark
✨#1 Open Source AI Gateway & API Developer Portal
Unbody
AI for private data, anywhere, any format, in 1 line of code
Knock
Customer engagement infrastructure for product-led growth
Keywords AI
Unified developer platform to build software with AI
TensorBlock Forge
One API for all AI models
Nylas
Integrate inbox, calendar, and meetings into your app
Quanty
AI-Powered Financial Analysis Chatbot
Farspeak
Build smart apps in minutes (beta)
ToolSDK.ai
5000+ MCP servers AI tools, 1 line of code
Best AI Infrastructure Tools Alternatives to Langchain
LastMile AI
AI developer platform for engineering teams
Merlin Unified API
One Super API for all AI models (with 90% less error rates)
Velvet
AI Gateway & Platform
DeepAI
Easily build the power of AI into your applications
AINave
Navigate the world of AI with ease
AI/ML API
One API 200+ AI Models Accessible 24/7
Langfuse
Open Source LLM Engineering Platform
Mistral AI
Open and portable generative AI for devs and businesses
GraphBit
Rust-core, Python-first Agentic AI framework
liteLLM
One library to standardize all LLM APIs
APIPark
✨#1 Open Source AI Gateway & API Developer Portal
Deepchecks Monitoring
Open Source Monitoring for AI & ML
Personal Assistant by HyperWrite
The first AI agent that can operate your browser.
Portia AI
Build AI agents you can trust in regulated environments
Desearch
First Decentralized AI Search for Builders & Agents
W&B Models by Weights & Biases
Train, fine-tune, and manage AI models
Paperspace
The Cloud Platform built for the future
Knock
Customer engagement infrastructure for product-led growth
Puddl
Get Complete Breakdown of OpenAI API Usage for Free
Keywords AI
Unified developer platform to build software with AI
V7 Go
Automating multi-modal tasks using GenAI reliably, at scale.
LLMWare
Deploy AI privately and securely with small language models
FastMCP 3.0
The fast, Pythonic way to build MCP servers and clients
Nylas
Integrate inbox, calendar, and meetings into your app
Evidently AI
Collaborative AI observability platform
Kypso
Your engineering workflows, reimagined
Vela Partners
Leading quant vc
GoatStack.AI
AI Insights from scientific papers
Qwen 1.5 MoE
Highly efficient mixture-of-expert (MoE) model from Alibaba
Humanloop
Humanloop is the LLM evals platform for enterprises
Best AI Metrics and Evaluation Alternatives to Langchain
LastMile AI
AI developer platform for engineering teams
Velvet
AI Gateway & Platform
DeepAI
Easily build the power of AI into your applications
AINave
Navigate the world of AI with ease
Langfuse
Open Source LLM Engineering Platform
Deepchecks Monitoring
Open Source Monitoring for AI & ML
LangWatch Agent Simulations
Agentic testing for agentic codebases
Portia AI
Build AI agents you can trust in regulated environments
Viable
Use feedback to drive product innovation & customer growth
W&B Models by Weights & Biases
Train, fine-tune, and manage AI models
Paperspace
The Cloud Platform built for the future
Puddl
Get Complete Breakdown of OpenAI API Usage for Free
Evidently AI
Collaborative AI observability platform
GoatStack.AI
AI Insights from scientific papers
Confident AI
all-in-one LLM evaluation platform
Humanloop
Humanloop is the LLM evals platform for enterprises
Label Studio
Open Source Data Labeling Platform for AI Model Tuning
Free Access To 9000+ AI Tools Database
The Largest AI Tools Database On The Internet
Prompteus
Build and ship AI workflows that won’t break
Best LLM Developer Tools Alternatives to Langchain
GraphBit
Rust-core, Python-first Agentic AI framework
FastMCP 3.0
The fast, Pythonic way to build MCP servers and clients
Hooshgar | پلتفرم هوش مصنوعی هوشگر
The Unified Interface for LLMs
Google Labs
Google's AI and product experiments
Gabber
Build Real-time AI Apps That Can See, Hear, Speak, And Do
CogniMemo
AI that remembers, learns, and evolves
Frequently Asked Questions
What are the best alternatives to Langchain?
The top-rated alternatives to Langchain include Merlin Unified API, Velvet, LastMile AI. These tools offer similar functionality in categories like LLMs, Unified API, AI Infrastructure Tools.
How many alternatives to Langchain are there?
There are 50 alternatives to Langchain listed on FactCheckTool, spanning 5 categories.
What is the highest-rated alternative to Langchain?
Merlin Unified API is the highest-rated alternative to Langchain with a rating of 5.0/5 based on 3 reviews.
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