35%Qwen 3.5 397B API
Alibaba·Vision
Qwen 3.5 397B — Alibaba flagship MoE reasoning model for complex reasoning, coding, and general knowledge tasks.
Pricing
Cheapest live price, per 1 million tokens.
Input / 1M tokens
OpenRouter $0.390
Output / 1M tokens
OpenRouter $2.34
Cache read / 1M
Repeated prompt prefixes
Cache read is the discounted rate for repeated prompt prefixes (system prompts, agent context).
Capabilities · 9
Specifications
- Context window
- 128K
- Max output
- 33K
- Type
- Vision
- Creator
- Alibaba
- Live sellers
- 334
- Requests / 24h
- 404
Price history · 60 days
Estimated monthly cost
30 days at the cheapest live price.
Quick start
OpenAI-compatible — change the base URL and key. Get a key from the dashboard.
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="YOUR_QUBAX_API_KEY",
)
response = client.chat.completions.create(
model="qwen3.5-397b-a17b",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)About Qwen 3.5 397B
Qwen 3.5 397B is a multimodal language model developed by Alibaba. It's particularly well-suited for analyzing images, screenshots, and visual content, tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction and handling large contexts of up to 128K tokens. Its 128K-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. It can write up to 33K tokens in a single response.
As of Nov 4, 2026, Qwen 3.5 397B costs $0.437 per 1M input tokens and $3.15 per 1M output tokens on Qubax. A typical 1,000 chat requests (2K tokens in, 500 out) come to about $2.45. 334 independent compute providers currently serve it, so requests fail over automatically. It handled 404 requests on Qubax in the last 24 hours. Pay with USDC, USDT, BTC, ETH or 350+ other coins — no credit card required.
Similar-priced alternatives
Frequently asked questions
How much does the Qwen 3.5 397B API cost?
On Qubax, Qwen 3.5 397B costs $0.437 per 1M input tokens and $3.15 per 1M output tokens.
Is the Qwen 3.5 397B API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use Qwen 3.5 397B as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
How do I pay for Qwen 3.5 397B API usage?
Qubax uses prepaid crypto credits. Top up with USDC, USDT, BTC, ETH, SOL or 350+ other coins and your balance is deducted as you use the API. No credit card or KYC required.
What is the context window of Qwen 3.5 397B?
Qwen 3.5 397B supports a context window of 128K tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with Qwen 3.5 397B?
You can use Qwen 3.5 397B to analyze images and visual content, tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines and process long documents and entire codebases. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast and reliable is Qwen 3.5 397B on Qubax?
Responses stream token by token. 334 sellers serve it, so if one is slow or down the request moves to the next.
Qwen 3.5 397B vs NVIDIA Nemotron 3 Ultra 550B: which should I choose?
Qwen 3.5 397B by Alibaba and NVIDIA Nemotron 3 Ultra 550B by Other are both strong models in a similar price tier. Qwen 3.5 397B excels at complex reasoning and supports vision/image inputs. NVIDIA Nemotron 3 Ultra 550B comes from a different lab and may have different strengths depending on your workload. On Qubax, Qwen 3.5 397B starts at $0.437/1M input tokens versus NVIDIA Nemotron 3 Ultra 550B's $0.460/1M — making Qwen 3.5 397B the more cost-effective option for high-volume workloads. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use Qwen 3.5 397B for commercial projects?
Yes. Qwen 3.5 397B on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
Why use Qwen 3.5 397B on Qubax?
Live market prices
Providers compete on price — you get the cheapest healthy seller.
Pay with crypto
350+ coins (BTC, ETH, SOL, USDT, USDC). No card, no KYC.
OpenAI & Anthropic compatible
Drop-in base URL. Works with Cline, Cursor, Claude Code, OpenAI and Anthropic SDKs.