APIs for GPT, embeddings, images, audio and the Assistants/Agents stack.
Developer tools
LangChain
Free tierFramework and tooling for building LLM apps and agents.
Developer toolsby LangChain
What it does
Framework and tooling for building LLM apps and agents.
In their own words: LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.
It's a developer tools tool from LangChain. A free tier lets you try it before paying — useful when you're keeping costs low. Visit the website for the latest features and pricing.
Best for
Developer tools
Pricing
Free tier + paid plans
Maker
LangChain
toollens community rate
—
Be the first toollens user to rate LangChain.
Rating and commenting is for toollens members. Sign in to rate LangChain
Global rating
Gathered automatically from public sources — updated continuously.
Alternatives in Developer tools
See all 490Build with Claude models via API for chat, coding and agents.
Developer tools
The hub for open models, datasets and ML demos.
Developer toolsFree