Best genuinely FREE LLM API that's actually close to Claude-level?
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A developer is seeking recommendations for a genuinely free LLM API for a hackathon project in August 2026. They require an API with good reasoning and coding capabilities, ideally comparable to Claude Sonnet/Opus, with decent rate limits and an API key for students. The developer has already explored options like Gemini, Groq, OpenRouter free models, and Ox Alpha/GLM, but found them lacking in freeness, quality, or rate limits. OpenAI-compatibility and strong performance in coding/agentic tasks are considered significant advantages.
Guys I’m building a project for a hackathon and I need an LLM API.
I’m specifically looking for:
- genuinely free API (not $5 credits / trial)
- good reasoning + coding
- preferably Claude Sonnet/Opus-level or as close as possible
- decent rate limits
- API key available for students/hackathon use
- OpenAI-compatible would be a huge plus
I’ve already looked at Gemini, Groq, OpenRouter free models, Ox Alpha/GLM, etc., but most either have pretty low limits, aren't actually free, or aren't close enough in quality.
What are you guys using right now in August 2026?
I’m completely fine with a less popular provider/model if it’s genuinely good.
Bonus points if it’s good at coding/agentic tasks. 🙏