identity

open weights
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qwen3.5-397b-a17bAlibaba (Qwen)

from /1M in$0.36deepinfra inc.
context262K66K out
providers31 region
price spread1.7x4 endpoints
endpoints
4
regions
1
api
chat
released
February 2026

capabilities 5/8

visionreasoningtoolscachingweb searchjson schemacomputer useimage gen

The same weights cost 1.7x more on nebius ai than on deepinfra inc.. That is what the endpoints table is for.

endpoints

4 / 1 region
Providers serving qwen3.5-397b-a17b, with pricing and measured performance. Best value in each column is coloured.
#flags
1DeepInfra Inc.Global262K$0.36$2.40$0.18zdr
2DeepInfra Inc.Global262K$0.49$3.60$0.30zdr
3Nebius AIGlobal128K$0.60$3.60$0.60zdr
4Novita AIGlobal262K$0.60$3.60$0.60zdr
provider price, no markupper 1M tokensblank where no qualifying sample

measured

through Sep 12

no measured traffic for this model yet. the endpoints table above carries provider pricing

benchmarks

artificial analysis
Benchmark scores, each normalised to 100
evalScore as a share of 100/100
GPQA Diamond86.1
τ²-Bench83.9
Terminal-Bench Hard35.6
Intelligence Index21.4
Humanity's Last Exam19.8
5 evalsmean49.4

Scores from Artificial Analysis and public leaderboards, normalised to 100. Bar colour is the band, not the rank: green 80 and up, blue 55 and up, amber 30 and up. Benchmarks measure narrow skills, so test on your own workload before committing. Released 2026-02-16.

call it

model=
deepinfra/Qwen/Qwen3.5-397B-A17B:flex

this model has no managed policy yet, so call the provider endpoint directly. every id in the endpoints table works the same way

Base url is https://router.requesty.ai/v1 for every id here. One key reaches the whole catalog.

quickstart

openai compatible
main.py
from openai import OpenAI client = OpenAI(    api_key="YOUR_REQUESTY_API_KEY",    base_url="https://router.requesty.ai/v1",) response = client.chat.completions.create(    model="deepinfra/Qwen/Qwen3.5-397B-A17B:flex",    messages=[        {"role": "user", "content": "Explain quantum computing in one paragraph."},    ],) print(response.choices[0].message.content)

Change the base url, use your Requesty key, set the model to any id in the call pane. Existing OpenAI SDK code needs no other edit, and the same key reaches every other model in the catalog, so switching later is a one-parameter change. Browse all models

notes

reference

The Qwen3.5 series 397B-A17B native vision-language model is based on a hybrid architecture design that integrates linear attention mechanisms with sparse Mixture-of-Experts (MoE), achieving higher inference efficiency. Across a variety of tasks—including language understanding, logical reasoning, code generation, agentic tasks, image understanding, video understanding, and graphical user interface (GUI) interaction—it demonstrates exceptional performance comparable to current top-tier frontier models. Possessing robust code generation and agentic capabilities, it exhibits strong generalization across various agent scenarios.

questions 5

Which providers serve qwen3.5-397b-a17b?
qwen3.5-397b-a17b is available from 3 providers through Requesty: DeepInfra Inc., Nebius AI, Novita AI. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.
How much does qwen3.5-397b-a17b cost?
Pricing starts at $0.36 per million input tokens and $2.40 per million output tokens on the cheapest provider. Prices vary by provider and region; the table above shows every endpoint. Requesty charges exactly what the upstream provider charges, with no markup.
Is qwen3.5-397b-a17b open weights?
Yes. qwen3.5-397b-a17b is an open-weights model from Alibaba (Qwen), which is why multiple inference providers can host it. Provider choice affects price, latency, and data-privacy terms, all compared above.
What is the context window of qwen3.5-397b-a17b?
qwen3.5-397b-a17b supports up to 262K tokens of context, with up to 66K output tokens per response. Some providers expose a smaller window; check the per-endpoint context column above.
How do I use qwen3.5-397b-a17b with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "deepinfra/Qwen/Qwen3.5-397B-A17B:flex" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.

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route qwen3.5-397b-a17b through one endpoint

One key for 3 providers on this model and 600+ others. No markup on provider prices, automatic failover, caching built in. Weekly aggregates in the measured pane come from production traffic routed through Requesty, one line per provider on a shared axis. Methodology

qwen3.5-397b-a17b3 providers4 endpointsfrom $0.36 /1M inctx 262Kspread 1.7xupdated Sep 12