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Vercel AI SDK

TypeScript toolkit for building AI-powered apps

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The most recently approved AI tools people use as an alternative to Vercel AI SDK (TypeScript toolkit for building AI-powered apps), newest first.

LangChain
LangChain

The most widely adopted framework for LLM applications

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Haystack
Haystack

Open-source Python framework for RAG and search pipelines

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OpenRouter
OpenRouter

One API endpoint for 300+ AI models from every provider

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LlamaIndex
LlamaIndex

Data framework for connecting LLMs to your own data

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Mastra
Mastra

Open-source TypeScript framework for AI agents

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