128K context · 9B params · Apache-2.0
01-ai/yi-coder
Yi-Coder is 01.AI's open-source code model series (9B / 1.5B / 34B) with 128K context, strong multilingual code generation, test-case synthesis and bug diagnosis. Served here via SiliconFlow.
Reachability & verification
Live reachability
Target (01.AI): https://api.siliconflow.cn/v1
Live reachability probe
Measured in real time from the ModelHub gateway egress to this model's API endpoint. Green means reachable right now. Overseas reference latencies are estimates; the live probe is the proof of current reachability.
Pricing across providers
1Prices are shown in each provider's billing currency — ¥ (CNY) for Chinese providers, $ (USD) for overseas gateways.
| Provider | Input /1M | Output /1M | Blended | Ctx | p50 latency | API | Verified |
|---|---|---|---|---|---|---|---|
| SiliconFlow01-ai/Yi-Coder-9B | ¥0.2 | ¥0.4 | ¥0.27 | 128K | — | OAI | 43d ago |
Works with
Any OpenAI-compatible client works — point the base URL at the provider endpoint.
Capabilities
Languages: en, zh, +50 langs
Code samples
from openai import OpenAI
client = OpenAI(
base_url="https://api.siliconflow.cn/v1",
api_key="YOUR_API_KEY",
)
resp = client.chat.completions.create(
model="01-ai/Yi-Coder-9B",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)curl https://api.siliconflow.cn/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "01-ai/Yi-Coder-9B",
"messages": [{"role": "user", "content": "Hello!"}]
}'import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.siliconflow.cn/v1",
apiKey: "YOUR_API_KEY",
});
const resp = await client.chat.completions.create({
model: "01-ai/Yi-Coder-9B",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);Technical specs
Context
128K
Max output
—
Parameters
9B
Release
2024-09
Training cutoff
—
License
Apache-2.0
Similar models
Frequently asked questions
How much does Yi-Coder cost?
The cheapest tracked blended price is ¥0.27 per 1M tokens on SiliconFlow. See the pricing matrix above for input/output splits per provider.
Can I use Yi-Coder from outside China?
Availability depends on the hosting provider. Use our Path Planner on the 01.AI page to map a verified official-vs-brokered access path, including payment and KYC constraints.
Is Yi-Coder open source?
Yes — Yi-Coder is open-weight under the Apache-2.0 license. You can self-host it or use any listed inference provider.
Is Yi-Coder OpenAI-compatible?
Yes — at least one tracked provider exposes an OpenAI-compatible endpoint, so Cursor, Cline, Aider and similar clients work with just a base-URL change.
What is the maximum context window?
Yi-Coder supports up to 128K tokens of context with a maximum output of — tokens.
Need verified access to Yi-Coder?
We broker vetted intros to 01.AI — payment, KYC and endpoint verification handled.