Question 1

What is Qwen3.5 9B?

Accepted Answer

Qwen3.5 9B is a model from Qwen, released on Mar 2, 2026. Qwen3.5 9B is available on the Respan AI Gateway for production LLM workloads. Supports tool use. Up to 262K context window.

Question 2

How much does Qwen3.5 9B cost?

Accepted Answer

On the Respan gateway, input starts at $0.09 per 1M tokens on EmpirioLabs, and output starts at $0.13 per 1M tokens on EmpirioLabs, after gateway discounts. Averaged across 8 providers, it costs $0.12 per 1M input tokens and $0.21 per 1M output tokens.

Question 3

Which providers serve Qwen3.5 9B on Respan?

Accepted Answer

8 providers serve Qwen3.5 9B: EmpirioLabs, OpenRouter, DeepInfra, Parasail, Featherless, and TogetherAI. TogetherAI requires your own provider API key (BYOK).

Question 4

What is Qwen3.5 9B's context window?

Accepted Answer

Qwen3.5 9B accepts up to 262K tokens of context on its largest provider route.

Question 5

How do I use Qwen3.5 9B 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 "qwen3-5-9b". 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 9B?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was TogetherAI at 65 tokens per second, and the lowest response latency was 1.1 seconds on EmpirioLabs. Speed varies with request size and provider.

Question 7

Where does Qwen3.5 9B rank on the Respan Index?

Accepted Answer

Qwen3.5 9B scores 17.2 out of 100 on the Respan Index v1.1, ranking #110 of 138 models. By category: Coding 3.2, Agents 18.6, Reasoning 14.5, Knowledge & language 14.5, and Human preference 44.7 (estimated). 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 9B score on benchmarks?

Accepted Answer

Qwen3.5 9B has 18 published benchmark scores, including LiveCodeBench v6 65.6%, TAU2-Bench 79.1%, and GPQA Diamond 81.7%. Each score links to where it was published; the data is collected by llmmetric.com.

Provider	Context	Input	Output
EmpirioLabs`empiriolabs/qwen3-5-9b`	262K	$0.09/M	$0.13/M
OpenRouter`openrouter/qwen/qwen3.5-9b`	262K	$0.10/M	$0.15/M
DeepInfra`deepinfra/Qwen/Qwen3.5-9B`	262K	$0.10/M	$0.15/M
Parasail`parasail/parasail-qwen35-9b`	262K	$0.10/M	$0.25/M
Parasail`parasail/qwen/qwen3.5-9b`	262K	$0.10/M	$0.25/M
Parasail`parasail/Qwen/Qwen3.5-9B`	262K	$0.10/M	$0.25/M
Featherless`featherless_ai/Qwen/Qwen3.5-9B`	33K	$0.17/M	$0.25/M
TogetherAIBYOK only`together_ai/Qwen/Qwen3.5-9B`	262K	$0.17/M	$0.25/M

Qwen3.5 9B

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Response latency

Benchmarks

Respan Indexv1.1

Coding1

Agents3

Apps

Qwen3.5 9B FAQ

Works with your entire stack

Built for AI agents.
Break less.
Ship more.

Reasoning5

Math2

Knowledge5

Multimodal2