Qwen3.8 Flash (Reasoning)
by Alibaba Cloud / Qwen Team
Qwen3.8 Flash (Reasoning) is a reasoning model from Alibaba Cloud / Qwen Team, released on August 26, 2026. It has a 1M-token context window and can generate up to 131K output tokens. API pricing is $0.15 per 1M input tokens and $0.47 per 1M output tokens. It ranks #24 of 220 models by Intelligence Score with a score of 48.3.
Qwen3.8 Flash is the production QwenCloud / OpenRouter API model (id qwen3.8-flash), not the open-weight Qwen3.8-Flash-Next checkpoint. Hugging Face states Flash is the official managed version based on Flash-Next with production features such as 1M context by default and official built-in tools. Architecture inherits Flash-Next (125B parameters with 6B activated, plus 51B n-gram embedding and 4B MTP). Multimodal text, image, and video understanding; thinking on by default; function calling, built-in tools, and structured output. QwenCloud lists 1M context, ~128k max output, and ~256k thinking budget. Open weights remain under the separate catalog card qwen3.8-flash-next.
Key specs
| Provider | Alibaba Cloud / Qwen Team |
|---|---|
| Release date | 2026-08-26 |
| License | proprietary |
| Context window | 1M tokens |
| Max output | 131K tokens |
| Input price | $0.15 / 1M tokens |
| Output price | $0.47 / 1M tokens |
| Intelligence Score | 48.3 |
| Coding index | 34 |
| Output speed | 72 tokens/s |
| Time to first token | 2.64 s |
Quick answers
What is the context window of Qwen3.8 Flash (Reasoning)?
Qwen3.8 Flash (Reasoning) has a context window of 1M tokens, with a maximum output of 131K tokens per response.
How much does Qwen3.8 Flash (Reasoning) cost?
Qwen3.8 Flash (Reasoning) costs $0.15 per 1M input tokens and $0.47 per 1M output tokens through the API.
Is Qwen3.8 Flash (Reasoning) open source?
No. Qwen3.8 Flash (Reasoning) is a proprietary model from Alibaba Cloud / Qwen Team (proprietary license).
When was Qwen3.8 Flash (Reasoning) released?
Alibaba Cloud / Qwen Team released Qwen3.8 Flash (Reasoning) on August 26, 2026.
How does Qwen3.8 Flash (Reasoning) compare to Claude Opus 5.5 (Reasoning)?
Qwen3.8 Flash (Reasoning) scores 48.3 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.15 vs $4 per 1M tokens.
Compare on the AI leaderboard · All AI models
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