Qwen3.5-Flash

Benchmarks, price, context and versions

Also searched as

Qwen3.5 Flash

Direct answer: Qwen3.5-Flash is a model from Alibaba. 82.3% on GPQA Diamond, per Epoch AI. On OpenRouter, US$ 0.065 per 1 million input tokens and US$ 0.26 per 1 million output tokens.

✓ Good for

high-volume use (input price in the cheapest 25% on OpenRouter)
very long documents or code (a window of 1 million tokens or more, according to OpenRouter)

✕ Not the best for

the ceiling of reasoning on research-level math (#78 of 86 on FrontierMath (tiers 1 to 3))
answering short facts with little invention (#75 of 87 on SimpleQA Verified)

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is

82.3%

highest score on this metric 96.4%

84º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

84.4%

highest score on this metric 100%

82º / 186 · Epoch AI, latest version we checked

FrontierMath (tiers 1 to 3)

18.2%

highest score on this metric 95.1%

78º / 86 · Epoch AI, latest version we checked

SimpleQA Verified

20.3%

highest score on this metric 94%

75º / 87 · Epoch AI, latest version we checked

Key specs

Lab: Alibaba
Origin: China
Family: Qwen Flash provisional data
Weights?: undisclosed
License: no data
Input US$/1M?: US$ 0.065
Output US$/1M: US$ 0.26
Context?: 1,000,000 tokens
Parameters: no data
Input: image, text, video
OpenRouter usage?: no data
Downloads (30 days)?: no data
Use cases provisional data: Text Agents
Dates in sources: 2026, published, per Epoch AI
2026, listed on OpenRouter

Version history

2026 Qwen: Qwen3.8 Omni Flash OpenRouter, listed on OpenRouter
2026 Qwen: Qwen3.8 Flash OpenRouter, listed on OpenRouter
2026 Qwen3.8-Flash-Next-FP8 Hugging Face Hub, Hugging Face repo created
2026 Qwen3.8-Flash-Next Hugging Face Hub, Hugging Face repo created
2026 Qwen: Qwen3.7 Flash OpenRouter, listed on OpenRouter
2026 Qwen: Qwen3.6 Flash OpenRouter, listed on OpenRouter
2026 Qwen: Qwen3.5-Flash OpenRouter, listed on OpenRouter
2025 Qwen: Qwen3 Coder Flash OpenRouter, listed on OpenRouter

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Qwen3.5-Flash?

Qwen3.5-Flash is a model from Alibaba, with undisclosed weights, used for text, agents.

How much does Qwen3.5-Flash cost?

On OpenRouter, US$ 0.065 per 1 million input tokens and US$ 0.26 per 1 million output tokens.

What is the context window of Qwen3.5-Flash?

1,000,000 tokens, per OpenRouter.

Is Qwen3.5-Flash open source?

No data in open sources.

What is Qwen3.5-Flash's GPQA Diamond score?

82.3% on GPQA Diamond, per Epoch AI.

Is Qwen3.5-Flash good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Qwen3.5-Flash?

It was made by Alibaba, a lab from China.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Alibaba

See lab

Sources

Epoch AI, CC BY 4.0, latest version we checked.
OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.