Alibaba (Qwen) · Released Feb 26, 2026Qwen3.5 9B Base
Pre-trained Qwen3.5 base checkpoint for fine-tuning and research, without instruction tuning.
- Capability
- —No ECI score yet
- Input
- $0.30per 1M tokens
- Output
- $0.807per 1M tokens
- Context
- 262K66K max output
What it costs
- Input
- $0.30per million tokens
- Output
- $0.807per million tokens
- Blended (3:1)
- $0.427cheaper than 64% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $1.00 |
| Team assistant25M input + 5M output tokens | $11.54 |
| Production app250M input + 50M output tokens | $115.35 |
Median of 1 paid API provider on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Qwen3.5 9B Base yet.
The details
- Lab
- Alibaba (Qwen)
- Released
- Feb 26, 2026
- Context window
- 262,144 tokens
- Max output
- 65,536 tokens
- Inputs
- Text, Images, Video
- Output
- Text
- Reasoning
- No
- Tool calling
- No
- Structured output
- No
- Weights
- Open weights · Apache-2.0
- Availability
- 1 API providerlisted on models.dev
More from Alibaba (Qwen)
About Qwen3.5 9B Base
How much does Qwen3.5 9B Base cost?
Qwen3.5 9B Base costs $0.30 input / $0.807 output per million tokens (median across 1 API provider). At a 3:1 input-to-output mix that is $0.427 per million tokens, cheaper than 64% of the 445 priced models we track.
What is the context window of Qwen3.5 9B Base?
Qwen3.5 9B Base accepts up to 262,144 tokens per request and can write up to 65,536 tokens in one response.
How good is Qwen3.5 9B Base?
Epoch AI has not published a Capabilities Index score for Qwen3.5 9B Base yet.
Is Qwen3.5 9B Base open source?
Yes. Alibaba (Qwen) publishes the weights under the Apache-2.0 licence, so it can be downloaded and self-hosted.
What inputs does Qwen3.5 9B Base support?
Qwen3.5 9B Base accepts text, images and video and replies in text. It is not a dedicated reasoning model, does not support tool calling.
When was Qwen3.5 9B Base released?
Alibaba (Qwen) released Qwen3.5 9B Base on Feb 26, 2026.
What are the best alternatives to Qwen3.5 9B Base?
The closest current models from other labs on capability, price and release date are Mercury 2 (Inception, $0.25 / $0.75), Trinity Large Thinking (Arcee AI, $0.25 / $0.80), Nemotron 3 Nano Omni 30B A3B Reasoning (NVIDIA, $0.25 / $0.85) and GLM-4.6V (Z.ai (Zhipu), $0.30 / $0.90).