Qwen3.8-27B (Reasoning)
by Alibaba Cloud / Qwen Team
Qwen3.8-27B (Reasoning) is a reasoning model from Alibaba Cloud / Qwen Team, released on August 14, 2026. It has a 262K-token context window and can generate up to 262K output tokens. API pricing is $0.4 per 1M input tokens and $3 per 1M output tokens. It ranks #33 of 220 models by Intelligence Score with a score of 44.6.
Qwen3.8-27B is a dense 27.78-billion-parameter multimodal foundation model for coding, professional work, research, and long-horizon agents. It natively understands text, images, and video, supports configurable thinking effort and preserved reasoning across turns, and uses a 64-layer hybrid architecture with repeating Gated DeltaNet and full-attention blocks. Its native context window is 262,144 tokens and can be extended to approximately 1 million tokens. The open weights are released under Apache 2.0 and support Transformers, vLLM, SGLang, and TokenSpeed.
Key specs
| Provider | Alibaba Cloud / Qwen Team |
|---|---|
| Release date | 2026-08-14 |
| License | open source |
| Context window | 262K tokens |
| Max output | 262K tokens |
| Input price | $0.4 / 1M tokens |
| Output price | $3 / 1M tokens |
| Intelligence Score | 44.6 |
| Coding index | 30.3 |
Quick answers
What is the context window of Qwen3.8-27B (Reasoning)?
Qwen3.8-27B (Reasoning) has a context window of 262K tokens, with a maximum output of 262K tokens per response.
How much does Qwen3.8-27B (Reasoning) cost?
Qwen3.8-27B (Reasoning) costs $0.4 per 1M input tokens and $3 per 1M output tokens through the API.
Is Qwen3.8-27B (Reasoning) open source?
Yes. Qwen3.8-27B (Reasoning) is an open model released under the open source license.
When was Qwen3.8-27B (Reasoning) released?
Alibaba Cloud / Qwen Team released Qwen3.8-27B (Reasoning) on August 14, 2026.
How does Qwen3.8-27B (Reasoning) compare to Claude Opus 5.5 (Reasoning)?
Qwen3.8-27B (Reasoning) scores 44.6 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.4 vs $4 per 1M tokens.
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