Baichuan Intelligence API

Baichuan Intelligence, founded by Wang Xiaochuan, provides the Baichuan LLM series API — known for Chinese long-context and open-source releases.

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Use it when

Consistently top-tier among domestic models on Chinese benchmarks

Watch for

Overseas influence / ecosystem weaker than Qwen

First check

Sign up at platform.baichuan-ai.com → create an API key in the console → POST /v1/chat/completions (OpenAI-compatible schema).

Auth

api_key

CORS

HTTPS

Yes

Signup

Protocol

REST

Pricing

paid

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About this API

Baichuan Intelligence was founded in 2023 by former Sogou CEO Wang Xiaochuan — one of China's so-called 'six small tigers' of LLM startups. The company has released Baichuan, Baichuan2, Baichuan3, and Baichuan4 series; the Baichuan2 lineup (7B / 13B / 192K long-context) was open-sourced under permissive commercial terms and quickly became a workhorse Chinese open-source LLM. Commercial APIs are served via platform.baichuan-ai.com with OpenAI-compatible endpoints. Wang Xiaochuan's stated strategic focus is medical AI, with the dedicated Baichuan-M vertical line. General-purpose performance targets GPT-4 / Qwen-Max, with particular strength on Chinese tasks; overseas reach and English performance trail Alibaba.

What you can build

1Chinese LLM applications (chatbot, content generation, knowledge assistants)
2Long-context RAG (Baichuan2-192K and similar)
3Vertical-domain fine-tuning (medical, legal) on top of open-source versions
4On-premise deployment (open-source versions available with commercial licensing)

Strengths & limitations

Strengths

Consistently top-tier among domestic models on Chinese benchmarks
Baichuan2 open-source releases (7B/13B/192K) widely downloaded on HuggingFace
Wang Xiaochuan's medical-AI focus yields dedicated vertical models

Limitations

Overseas influence / ecosystem weaker than Qwen
Some latest closed-source models are region-restricted
English performance still trails GPT-4

Example request

Generic template — replace <endpoint> with the real path from the docs.

curl https://platform.baichuan-ai.com/<endpoint> \
  -H "Authorization: Bearer $API_KEY"
# Some providers use X-Api-Key instead — verify in the docs.

Getting started

Sign up at platform.baichuan-ai.com → create an API key in the console → POST /v1/chat/completions (OpenAI-compatible schema).

FAQ

Does Baichuan2-192K really use the full 192K context?+

Theoretically supports 192K. Long-tail recall (needle-in-haystack) performs reasonably on public benchmarks, though still behind Claude 200K.

Is the open-source version free for commercial use?+

Baichuan2's open-source license permits free commercial use with attribution preserved. See the GitHub LICENSE for specifics.

Technical details

CORS: ?HTTPS: YesSignup: ?Open source: Yes

Auth type: api_key
Pricing: paid
Rate limit: 按模型默认 QPS；可申请提升
Free tier quota: New accounts receive a starter credit balance on signup; consumed via pay-per-token billing thereafter.
Protocols: REST
SDKs: python, javascript