APIs for GPT, embeddings, images, audio and the Assistants/Agents stack.
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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 enables every company to own their intelligence. Control, govern, and compound intelligence with an open agent engineering platform. Trusted by 7k+ organizations.
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.
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