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SiliconFlow (China) free tier

🔌 LLM APIs with free tier · no card · offered only in mainland China, Hong Kong, Taiwan and Macao · live — last verified by a probe on 2026-10-26 · siliconflow.cn · back to the whole list

What you get

Zero-priced small chat models on SiliconFlow China, after real-name verification with accepted mainland, Hong Kong, Macau or Taiwan documents

Free models

xing4.0-29b, qwen3-8b, glm-4-9b-0414, qwen2.5-7b, qwen3.5-4b, glm-z1-9b-0414, deepseek-r1-0528-qwen3-8b

Limits, in the vendor’s words

Verified free models: Usage allowance: see your account for values (period not published) per account per model

Free models are zero-priced but require real-name verification. Online verification uses an Alipay face scan and accepted mainland, Hong Kong, Macau, Taiwan or Chinese permanent-residence documents; other applicants must contact staff. Sign in by SMS or email. Per-model fixed rate values are shown in the client-rendered model square, rather than public docs.

Where it is offered

Offered only in mainland China, Hong Kong, Taiwan and Macao (source, read 2026-09-26). That leaves out 90.8% of the developers GitHub counts, beyond the countries under comprehensive US embargo (Innovation Graph, 2026 Q1). In the vendor’s words: “不具有以上证件的用户，暂时不支持线上个人认证”.

What happens to what you send

What you send is not used to train models. In the vendor’s words: “我们不会长期存储您的任何业务输入与输出数据；不会将您的业务数据用于任何大模型的预训练、微调或其他商业用途；” (source).

Connect

Base URL: https://api.siliconflow.cn/v1
Key: SILICONFLOW_CN_API_KEY — get one at https://cloud.siliconflow.cn/account/ak
Anthropic-format base (Claude Code’s ANTHROPIC_BASE_URL): https://api.siliconflow.cn
Callable ids: XingChenAGI/Xing4.0-29B, Qwen/Qwen3-8B, THUDM/GLM-4-9B-0414, THUDM/GLM-Z1-9B-0414, deepseek-ai/DeepSeek-R1-0528-Qwen3-8B, Qwen/Qwen3.5-4B, Qwen/Qwen2.5-7B-Instruct
Note: ids are the price list’s own; Hunyuan-MT-7B, the other chat row at ¥0, is a translation model. /v1/models needs a key, and the Messages route the API reference documents is https://api.siliconflow.cn/v1/messages

Try it from your terminal with your key in SILICONFLOW_CN_API_KEY — it goes from your machine to the vendor and nowhere else:

curl -s https://api.siliconflow.cn/v1/chat/completions \
  -H "Authorization: Bearer $SILICONFLOW_CN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"model":"XingChenAGI/Xing4.0-29B","messages":[{"role":"user","content":"2+2? MAKE NO MISTAKES."}]}'

Evidence

Probe: the page at https://siliconflow.cn/pricing, anchored on Qwen2.5-7B-Instruct (Free), DeepSeek-R1-0528-Qwen3-8B (Free) in the page’s own data
Source: https://siliconflow.cn/pricing
Source: https://docs.siliconflow.cn/docs/userguide/faqs/rate-limit-and-upgradation
Source: https://docs.siliconflow.cn/docs/userguide/faqs/authentication
Source: https://docs.siliconflow.cn/docs/userguide/quickstart
Source: https://docs.siliconflow.cn/docs/api/messages-post

History

Each line is a change to what this page publishes, dated the day it reached the list, in UTC.

2026-10-03 — Free models changed: added deepseek-r1-0528-qwen3-8b, glm-z1-9b-0414, qwen2.5-7b, qwen3.5-4b
2026-09-19 — Added: China’s SiliconFlow prices eight small chat models at ¥0 — Qwen3-8B, GLM-4-9B-0414 and the 29B Xing4.0 among them — for an account verified with Chinese, Hong Kong, Macau or Taiwan papers

Generated from registry.yaml on 2026-10-27 and re-verified twice a week; the full list, the Atom feed and the machinery are at https://github.com/mvalentsev/awesome-free-ai-coding.

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