SiliconFlow

NOTES FROM SOURCE

Permanently free models, no credit card required. Identity verification required. 200+ paid models also available. [^9] ## Glossary ## Contributing Know a free tier that's missing? [Open a PR](contributing.md). Include the provider, endpoint, rate limits (link to their docs), and a few notable models. Trial credits and time-limited promos don't count. [^1]: The Gemini API free tier is now available in the EU, UK, and Switzerland; the [available regions](https://ai.google.dev/gemini-api/docs/available-regions) page lists these regions. Google no longer publishes per-model free-tier rate limits; check your quotas in [AI Studio](https://aistudio.google.com/). Free-tier prompts may be used by Google to improve products. [^2]: Groq rate limits were reduced in 2026. Most models now get 1,000 RPD on the free tier (down from 14,400). Llama 4 Maverick has been deprecated. See [rate limits](https://console.groq.com/docs/rate-limits). [^3]: Ollama Cloud measures usage by GPU time, not tokens or requests. Free tier described as "light usage" with session limits resetting every 5 hours and weekly limits every 7 days. Pro (50x more) and Max (250x more) plans available. Not OpenAI SDK-compatible; uses the Ollama API. [^4]: Free models default to 50 RPD per model. A one-time purchase of $10+ in credits unlocks 1,000 RPD for free models. OpenRouter also offers a [Free Models Router](https://openrouter.ai/docs/guides/routing/routers/free-models-router) (`openrouter/free`) and [model fallbacks](https://openrouter.ai/docs/guides/routing/model-fallbacks) for chaining models in priority order. Free providers may log prompts for training. [^5]: Kilo Code's free pool changes frequently, and the /api/gateway/models catalog can lag what is actually served: probe results on 2026-08-19 confirmed models absent from the catalog still answering. All listed rows were verified with live requests on that date. The kilo-auto/free router picks a model from the free pool, and Kilo's docs warn it "may route your requests to providers that log prompts and outputs". [^6]: API-Inference is free for registered users. Current published limits are 2,000 requests/day per user (total across models), with per-model daily quotas dynamically adjusted and capped at 500; concurrency is also dynamically rate-limited. Requires Alibaba Cloud account binding and real-name verification ([limits](https://modelscope.cn/docs/model-service/API-Inference/limits), [intro](https://modelscope.cn/docs/model-service/API-Inference/intro)). [^7]: OVHcloud AI Endpoints offers a permanent free anonymous tier (2 requests per minute per IP, per model) with no signup or API key required. Higher rate limits (400 RPM per Public Cloud project per model) require an API key and are billed pay-as-you-go per token; new Public Cloud accounts get up to $200 in free trial credits. Models are hosted in EU data centers. [^8]: SambaNova grants $5 in initial credits (valid 30 days) on top of the permanent free tier. The free tier itself persists indefinitely with 20 RPM, 20 RPD, and 200K TPD per model. No credit card required. OpenAI SDK-compatible. [^9]: SiliconFlow requires real-name identity verification to use free models (effective May 15, 2026, per the [release notes](https://api-docs.siliconflow.cn/docs/release-notes/overview)). Verification supports mainland-Chinese documents; international users must contact support. [^10]: LLM7.io rotated its catalog in August 2026; previously listed models now return model_unavailable, and the catalog itself changes frequently (43 models at last check). Anonymous access (no key) was confirmed on gpt-oss:20b on 2026-08-19; most other models require a token, available free from the API key page linked in the title. [^11]: The 10,000 free Neurons are shared across all Workers AI usage, not per model, and all limits reset daily at 00:00 UTC. Going over does not bill you, the request fails. Five models are excluded from Workers Free billing and need the Workers Paid plan or prepaid AI Gateway credits: `@cf/moonshotai/kimi-k2.6`, `@cf/moonshotai/kimi-k2.7-code`, `@cf/zai-org/glm-5.2`, `@cf/deepseek-ai/deepseek-v4-flash-0731`, `@cf/deepseek-ai/deepseek-v4-pro-0813` ([pricing](https://developers.cloudflare.com/workers-ai/platform/pricing/)). [^12]: Registration accepts overseas phone numbers ([registration FAQ](https://docs.bigmodel.cn/cn/faq/registration-login.md)) and the chat API does not require real-name verification: 目前调用 API 并不强制要求实名认证 ([authentication FAQ](https://docs.bigmodel.cn/cn/faq/authentication-issues.md)). The Batch API does require it ([batch FAQ](https://docs.bigmodel.cn/cn/faq/batch-api-issues.md)). The same free models are served from the international platform at `https://api.z.ai/api/paas/v4` ([endpoint](https://docs.z.ai/guides/develop/http/introduction)), where GLM-4.7-Flash, GLM-4.5-Flash and GLM-4.6V-Flash are all priced Free ([pricing](https://docs.z.ai/guides/overview/pricing.md)). Z AI has announced that GLM-4.5-Flash will be retired and its requests auto-routed to GLM-4.7-Flash ([model page](https://docs.bigmodel.cn/cn/guide/models/free/glm-4.5-flash.md)); the announced date has already passed while the model is still catalogued and still priced Free, so treat that row as living on borrowed time. [^13]: Mistral plans are global: the monthly allowance is shared across Studio, the API, and Vibe Code, so CLI usage eats the same budget ([subscriptions](https://docs.mistral.ai/admin/user-management-finops/subscriptions)). Free mode is the default for new accounts and needs no credit card ([quickstart](https://docs.mistral.ai/getting-started/quickstarts/studio/activate-and-generate-api-key)). Free-mode inputs and outputs may be used to train Mistral models, and you can opt out at any time ([data usage](https://help.mistral.ai/en/articles/347617-do-you-use-my-user-data-to-train-your-artificial-intelligence-models)). Mistral no longer publishes numeric free-tier rate limits and points you at the Limits page of the admin panel instead ([rate limits](https://help.mistral.ai/en/articles/698531-why-am-i-hitting-api-rate-limits-and-how-do-i-increase-them)); the rate limit column is kept from the last published values.

HOW TO CLAIM FREE API KEY

General steps — follow the official page for details

1. Open the API key page SiliconFlow ↗
2. Register a new account, or login if you have one.
3. Generate an API key in dashboard / settings.
4. Use API key + Base URL https://api.siliconflow.cn/v1 in your SDK or HTTP client.