Qwen3.5 9B Base
Qwen3.5 9B Base is a language model from Qwen released on Feb 26, 2026. It reads text and writes text, with a 66K token context window and up to 66K tokens per reply.
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It costs $0.30 per million input tokens and $0.807 per million output tokens. Cached input bills at $0.06, 80% less than fresh input.
It supports prompt caching, and its weights are open, so you can host it yourself.
- Modalities
- In / out price
- $0.30 / $0.807 per 1M
- Context
- 66K
- Max output
- 66K
- Released
- Feb 26, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Qwen3.5 9B Base pricing
USD, as listed on Oct 21, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.30 / 1M tokens | |
|---|---|---|
| Output | $0.807 / 1M tokens | |
| Cached input (read) | $0.06 / 1M tokens | 80% off input |
What Qwen3.5 9B Base costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Qwen3.5 9B Base through an OpenAI compatible API.
- Temperature
temperature
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Qwen3.5 9B Base questions
How much does the Qwen3.5 9B Base API cost?
$0.30 per million input tokens and $0.807 per million output tokens, with cached input at $0.06. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Qwen3.5 9B Base?
65,536 tokens of input, and it can write up to 65,536 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does Qwen3.5 9B Base support tool calling?
Not through the standard tools parameter. For an agent that calls your APIs, pick a model from the alternatives below that does.
Is Qwen3.5 9B Base open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was Qwen3.5 9B Base released?
Feb 26, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 21, 2026. The summary is written from these facts.