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vercel/ai (27k stars, +91 this week): The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications… Why it matters: useful plumbing for shipping LLM-powered features.

Below are 12 other LLM tooling repos tracked by OSS Radar that share at least two GitHub topics with ai, ordered by how many topics overlap, then by stars gained in the last 7 days. Topic overlap means a similar problem space, not a drop-in replacement, so check each project's README.

  1. 1. dyad-sh/dyad

    +154/wkest.

    Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it! Why it matters: useful plumbing for shipping LLM-powered features.

    22k stars · TypeScript · shared topics: anthropic, artificial-intelligence, gemini, generative-ai, llm, nextjs, openai, react, typescript, vercel

  2. 2. f/prompts.chat

    +525/wkest.

    f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Why it matters: useful plumbing for shipping LLM-powered features.

    173k stars · HTML · shared topics: artificial-intelligence, gemini, llm, nextjs, openai, typescript

  3. 3. langchain-ai/langchain

    +105/wkest.

    The agent engineering platform. Why it matters: useful plumbing for shipping LLM-powered features.

    148k stars · Python · shared topics: anthropic, gemini, generative-ai, llm, openai, typescript

  4. 4. asgeirtj/system_prompts_leaks

    +245/wkest.

    Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Why it matters: useful plumbing for shipping LLM-powered features.

    70k stars · Python · shared topics: anthropic, gemini, generative-ai, llm, openai

  5. 5. lidge-jun/opencodex

    +238/wkest.

    Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK… Why it matters: useful plumbing for shipping LLM-powered features.

    17k stars · TypeScript · shared topics: anthropic, gemini, llm, openai, typescript

  6. 6. can1357/oh-my-pi

    +616/wkest.

    ⌥ Coding agent with the IDE wired in. Built by Stencil Labs. Why it matters: useful plumbing for shipping LLM-powered features.

    35k stars · TypeScript · shared topics: anthropic, llm, openai, typescript

  7. 7. headroomlabs-ai/headroom

    +588/wkest.

    Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. Why it matters: useful plumbing for shipping LLM-powered features.

    75k stars · Python · shared topics: anthropic, llm, openai, typescript

  8. 8. langchain-ai/langgraph

    +294/wkest.

    Build resilient agents. Why it matters: useful plumbing for shipping LLM-powered features.

    43k stars · Python · shared topics: gemini, generative-ai, llm, openai

  9. 9. decolua/9router

    +259/wkest.

    Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Why it matters: useful plumbing for shipping LLM-powered features.

    31k stars · JavaScript · shared topics: anthropic, gemini, llm, openai

  10. 10. trailhq/Trail-Code

    +259/wkest.

    Turbocharge Claude Code, Cursor, Codex, Gemini & every coding agent: faster, cheaper, with contextual understanding specific to your… Why it matters: useful plumbing for shipping LLM-powered features.

    10k stars · TypeScript · shared topics: anthropic, gemini, llm, openai

  11. 11. CoplayDev/unity-mcp

    +182/wkest.

    Unity MCP acts as a bridge between AI assistants and your Unity Editor. Why it matters: useful plumbing for shipping LLM-powered features.

    15k stars · C# · shared topics: anthropic, gemini, llm, openai

  12. 12. mastra-ai/mastra

    +147/wkest.

    Mastra is the modern TypeScript framework for AI-powered applications and agents. Why it matters: useful plumbing for shipping LLM-powered features.

    29k stars · TypeScript · shared topics: javascript, llm, nextjs, typescript

More: all trending LLM tooling repos · compare ai with the top 2