Qwen 3.5 397B
Access Qwen 3.5 397B through one API key. Alibaba's largest MoE model.
Alibaba's largest MoE model. 397B total parameters with 17B active, offering frontier-class reasoning.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Qwen 3.5 397B respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
262K tokens
Max Output
66K tokens
Input Price
$0.39 / 1M tokens
Output Price
$2.34 / 1M tokens
Strengths
Quick start
Copy this snippet and start making calls with Qwen 3.5 397B.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "qwen/qwen3.5-397b-a17b",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Qwen 3.5 397B through YepAPI?
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Alibaba's largest MoE model. 397B total parameters with 17B active, offering frontier-class reasoning.
Input tokens cost $0.39 per 1M tokens and output tokens cost $2.34 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Qwen 3.5 397B supports a 262K token context window with up to 66K output tokens per request.
Ready to use Qwen 3.5 397B?
$5 free credit on signup. No credit card required. Pay per call.
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