Question 1

What is Qwen3.5 397B A17B?

Accepted Answer

Qwen3.5 397B A17B is a model from Qwen, released on Feb 16, 2026. The Qwen3.5 series 397B-A17B native vision-language model is built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. It delivers state-of-the-art performance comparable to leading-edge models across a wide range of tasks, including language understanding, logical reasoning, code generation, agent-based tasks, image understanding, video understanding, and graphical user interface (GUI) interactions. With its robust code-generation and agent capabilities, the model exhibits strong generalization across diverse agent.

Question 2

How much does Qwen3.5 397B A17B cost?

Accepted Answer

On the Respan gateway, input starts at $0.17 per 1M tokens on EmpirioLabs, and output starts at $1.03 per 1M tokens on EmpirioLabs, after gateway discounts. Averaged across 8 providers, it costs $0.50 per 1M input tokens and $3.08 per 1M output tokens.

Question 3

Which providers serve Qwen3.5 397B A17B on Respan?

Accepted Answer

8 providers serve Qwen3.5 397B A17B: EmpirioLabs, DeepInfra, OpenRouter, Novita, Nebius, Parasail, and 1 more. TogetherAI requires your own provider API key (BYOK).

Question 4

What is Qwen3.5 397B A17B's context window?

Accepted Answer

Qwen3.5 397B A17B accepts up to 262K tokens of context on its largest provider route.

Question 5

How do I use Qwen3.5 397B A17B with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "qwen3.5-397b-a17b". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is Qwen3.5 397B A17B?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 77 tokens per second, and the lowest response latency was 1.5 seconds on Parasail. Speed varies with request size and provider.

Question 7

Where does Qwen3.5 397B A17B rank on the Respan Index?

Accepted Answer

Qwen3.5 397B A17B scores 27.6 out of 100 on the Respan Index v1.1, ranking #72 of 138 models. By category: Coding 11.5, Agents 34.1, Reasoning 22.7, Knowledge & language 30.2, and Human preference 50.1. The Respan Index combines independent and lab-reported benchmark results into one score, using benchmark data collected by llmmetric.com.

Question 8

How does Qwen3.5 397B A17B score on benchmarks?

Accepted Answer

Qwen3.5 397B A17B has 19 published benchmark scores, including SWE-bench Verified 76.4%, tau2-bench Telecom 97.8%, and GPQA Diamond 88.4%. Each score links to where it was published; the data is collected by llmmetric.com.

Provider	Context	Input	Output
EmpirioLabs`empiriolabs/qwen3-5-397b-a17b`	256K	$0.17/M	$1.03/M
DeepInfra`deepinfra/Qwen/Qwen3.5-397B-A17B`	262K	$0.45/M	$3.00/M
OpenRouter`openrouter/qwen/qwen3.5-397b-a17b`	262K	$0.45/M	$3.00/M
NovitaSave 10%`novita/qwen/qwen3.5-397b-a17b`	262K	$0.54/M	$3.24/M
Nebius`nebius/Qwen/Qwen3.5-397B-A17B`	262K	$0.60/M	$3.60/M
Parasail`parasail/parasail-qwen35-397b-a17b`	262K	$0.60/M	$3.60/M
Parasail`parasail/Qwen/Qwen3.5-397B-A17B`	262K	$0.60/M	$3.60/M
TogetherAIBYOK only`together_ai/Qwen/Qwen3.5-397B-A17B`	262K	$0.60/M	$3.60/M

Qwen3.5 397B A17B

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Response latency

Benchmarks

Respan Indexv1.1

Coding1

Agents6

Apps

Qwen3.5 397B A17B FAQ

Works with your entire stack

Built for AI agents.
Break less.
Ship more.

Reasoning4

Math4

Knowledge1

Arena3