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Free AI API Tools
For developers testing models, shipping MVPs, or adding chat/summarization/code features. Prioritize free credits, OpenAI SDK compatibility, and clear rate limits.
Search Intent
Find a model API you can call before paying.
Signup creditsOpenAI SDK compatibilityRate limits for MVP testingAccess stability
Recommended Tools
Gemini (Google) Gemini is Google's flagship AI model with the industry's longest context window (1M tokens).
Free API available via Goog... DeepSeek DeepSeek is a leading Chinese AI lab offering high-performance open-source LLMs.
April 2026 V4 release: V4-Pro (1.6T par... Groq Groq is known for its custom LPU inference chip, offering the fastest AI inference in the industry.
Free API supports Ll... Qwen (Alibaba) Qwen is Alibaba's LLM series. The latest Qwen3.6-Plus (released April 2, 2026) is the new king of Chinese coding models,... SiliconFlow SiliconFlow is a leading Chinese AI inference cloud, offering free APIs for multiple open-source models.
¥14 free credit... Cloudflare Workers AI Cloudflare Workers AI is Cloudflare's edge AI inference platform.
$5/mo Workers plan includes 10,000 free AI calls per d... StepFun StepFun is a Chinese AI company. Yuewen assistant is free to use.
Supports chat, image generation, video understanding, ... Google AI (Gemini) Google AI (Gemini) is Google's AI platform offering the Gemini model family.
AI Studio provides completely free API acce... Anyscale Anyscale is the company behind the Ray distributed computing framework, founded by UC Berkeley professor Ion Stoica.
Pro... Baichuan AI Baichuan AI is a Chinese LLM company with open-source Baichuan model series.
Web version is free, API offers 5M tokens o... Cerebras Cerebras uses proprietary WSE (Wafer Scale Engine) chips for the world's fastest inference (2000+ tokens/s).
Free tier: ... ChatGPT (OpenAI) ChatGPT is OpenAI's flagship product and the world's most popular AI assistant.
Major April 2026 updates: GPT-5.5 releas...
Next Steps
- Open 2-3 tool profiles and compare free quotas and limits.
- Test with real tasks, not just model specs.
- If integrating into a product, check API pricing and access stability.
Related Tasks
FAQ
How do I choose free AI API?
Start with free quota, then check whether it matches your intent: Find a model API you can call before paying.
Are all these tools free?
No. yangmao.ai prioritizes tools with free tiers or free trials, but policies can change on the official site.
Do they require a credit card?
It depends. Prefer tools with free web access, signup credits, or clearly documented no-card trials.