Top CHATGPT-ALTERNATIVE GitHub Repositories & Tools (2026)

Open-source, bring-your-own-key (BYOK) multi-model AI chat client for iOS, Android and the web. One LLM client for OpenAI, Anthropic, Google Gemini, OpenRouter, DeepSeek and ten more providers, plus any OpenAI-, Anthropic- or Gemini-compatible endpoint — Ollama, LM Studio, llama.cpp, vLLM. Local-first, self-hostable, no account. AGPL-3.0.

grok-cli-self the lightweight, zero-dependency Grok CLI. Chat with xAI's Grok AI (Grok 4) in your terminal: one-shot prompts

Daily-updated list of free AI models (free LLM APIs), ranked by quality with live status. Plus one OpenAI-compatible endpoint that routes to the best one.