OpenCode Zen
OpenCode Zen 提供了专门为 Coding Agent 和开发者打造的精选 AI 网关，包含多款免费限时试用的开放与实验性大语言模型。
Fish Audio
Fish Audio provides multilingual text-to-speech and reusable voice cloning APIs. S2.1 Pro supports 83 languages, automatic language detection, and natural-language emotion cues. Create an account: https://fish.audio/?aff=QNLX47TF37QU6
GitHub Models
GitHub Models offers free, rate-limited API access to selected OpenAI, DeepSeek, and open models through a GitHub token, with no separate provider account needed.
Google AI Studio
Google AI Studio provides free Gemini API access with generous free-tier rate limits, strong multimodal support, and browser-based key creation for quick prototyping.
Cloudflare Workers AI
Cloudflare's serverless GPU-powered inference platform, offering a high daily free tier for various open-source models.
OpenRouter
A unified API for many LLMs. They offer several models completely for free.
Vercel AI Gateway
Vercel AI Gateway acts as a proxy to various AI providers. It offers a generous $5 monthly credit for accessing premium models without bringing your own key (BYOK).
Xiaomi
Xiaomi Mimo platform offering robust AI models and currently featuring free TTS capabilities.