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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; Gemini 3.1 Pro offers a 2M-token-class long context window.
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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) Quick answer: Qwen API gives new Alibaba Cloud Bailian/DashScope users 70M signup tokens, an OpenAI-compatible setup pat... 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... llama.cpp llama.cpp is an MIT-licensed local LLM inference runtime with GGUF, quantization, multi-backend support, and self-hosted... Cline Open-source AI coding agent for VS Code. Bring your own API key (OpenRouter, Anthropic, OpenAI, DeepSeek). Plan/act mode... TextGen TextGen by oobabooga is an open-source private local LLM desktop app under AGPL-3.0.... LocalAI Open-source self-hosted drop-in OpenAI API alternative. Supports LLaMA, Mistral, Stable Diffusion, embeddings, and image... Aider Command-line AI pair programmer with git-aware diffs, repo-level chat, and multi-file edits. Best with Claude Sonnet or ... Continue Open-source AI code assistant for VS Code and JetBrains. Supports any backend including local Ollama. Autocomplete, chat...
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.