What is Qwen3.5-397B?

Qwen3.5-397B is a multimodal AI model developed by Alibaba with 397 billion parameters.

Who made Qwen3.5-397B?

Qwen3.5-397B was created by Alibaba.

Is Qwen3.5-397B open source?

Yes, Qwen3.5-397B has open weights and can be downloaded and self-hosted.

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

Qwen3.5-397B supports a context window of 256,000 tokens.

Qwen3.5-397B

AlibabaMULTIMODAL Open weight

Provider: Alibaba
Modality: MULTIMODAL
Parameters: 397B
Context window: 256,000 tokens
Weights: Open
Released: 16 Feb 2026

Compare Qwen3.5-397B with others

Qwen3.5-397B-A17B (Feb 2026) is Alibaba's current open flagship — a 397B/17B-active multimodal Apache-2.0 MoE that brings frontier reasoning and coding into self-hostable form.

Best for

The strongest fully-open Qwen — frontier reasoning + coding + multimodal
The open alternative to the closed Qwen Max line
Far higher throughput than Qwen3-Max at long context
201-language coverage for broad multilingual work

How it compares — and the India angle

Apache 2.0 lets Indian firms self-host with full data residency (DPDP-Act friendly) and zero per-token cost.
201 languages include usable Hindi/Indic support — though benchmark against Sarvam/IndicTrans for heavy Indic work.
Frontier capability without the closed Max line's API-only lock-in.

Benchmarks

Representative public scores (approximate, higher is better) for relative comparison. Check the provider for the latest official results.

GPQA Diamond88

SWE-bench Verified80

MMLU-Pro88

How to access

Free to self-host (Apache 2.0). Managed API as qwen3.5-plus via DashScope. Context extends to ~1M.

Access Qwen3.5-397B