Alibaba (Qwen) · Released Feb 15, 2026Qwen3.5 397B-A17B
Large open Qwen multimodal MoE for visual agents and long technical tasks.
- Capability
- 146.7ECI · #67 of 148
- Input
- $0.60per 1M tokens
- Output
- $3.60per 1M tokens
- Context
- 262K66K max output
What it costs
- Input
- $0.60per million tokens
- Output
- $3.60per million tokens
- Blended (3:1)
- $1.35pricier than 62% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $3.00 |
| Team assistant25M input + 5M output tokens | $33.00 |
| Production app250M input + 50M output tokens | $330.00 |
Official Alibaba API price, as listed on models.dev.
Independent benchmarks
#67 of 148 scored models
The shaded band is Epoch AI’s confidence range (144.8–148.2); the tick marks the median scored model.
Scores from Epoch AI, run independently of Alibaba (Qwen).
The details
- Lab
- Alibaba (Qwen)
- Released
- Feb 15, 2026
- Context window
- 262,144 tokens
- Max output
- 65,536 tokens
- Inputs
- Text, Images, Audio, Video
- Output
- Text
- Reasoning
- Thinking budget
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Open weights
- API model ID
qwen3.5-397b-a17bon Alibaba- Availability
- 23 API providerslisted on models.dev
What Alibaba (Qwen) claims
Published by the lab at launch. Settings vary, so compare these only with care.
| Benchmark | Score | Setting | Source |
|---|---|---|---|
| SWE-Bench Verified | 76.4 resolved | — | Source |
More from Alibaba (Qwen)
About Qwen3.5 397B-A17B
How much does Qwen3.5 397B-A17B cost?
Qwen3.5 397B-A17B costs $0.60 input / $3.60 output per million tokens (official Alibaba API price). At a 3:1 input-to-output mix that is $1.35 per million tokens, more expensive than 62% of the 360 priced models we track.
What is the context window of Qwen3.5 397B-A17B?
Qwen3.5 397B-A17B accepts up to 262,144 tokens per request and can write up to 65,536 tokens in one response.
How good is Qwen3.5 397B-A17B?
Epoch AI gives Qwen3.5 397B-A17B a Capabilities Index score of 146.7 (likely range 144.8–148.2), ranking it #67 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 86.4%, FrontierMath Tiers 1–3 31.2%, OTIS Mock AIME 2024–2025 88.9%.
Is Qwen3.5 397B-A17B open source?
Yes. Alibaba (Qwen) publishes the weights, so it can be downloaded and self-hosted.
What inputs does Qwen3.5 397B-A17B support?
Qwen3.5 397B-A17B accepts text, images, audio and video and replies in text. It is a reasoning model, supports tool calling and can return structured JSON output.
When was Qwen3.5 397B-A17B released?
Alibaba (Qwen) released Qwen3.5 397B-A17B on Feb 15, 2026.
What are the best alternatives to Qwen3.5 397B-A17B?
The closest current models from other labs on capability, price and release date are GLM-5 (Z.ai (Zhipu), ECI 145.8, $1.00 / $3.20), Kimi K2.5 (Moonshot AI, ECI 148.0, $0.60 / $3.00), GPT-5.4 mini (OpenAI, ECI 148.8, $0.75 / $4.50) and Nemotron 3 Ultra 550B A55B (NVIDIA, ECI 146.2, $0.50 / $2.50).