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o1-preview vs Qwen3.8-27B

Qwen3.8-27B significantly outperforms across most benchmarks.

OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026

Which is better?

o1-preview outperforms in 0 benchmarks, while Qwen3.8-27B is better at 1 benchmark (GPQA). Qwen3.8-27B significantly outperforms across most benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose o1-preview

  • you want predictable pricing at $15.00/M input and $60.00/M output

Choose Qwen3.8-27B

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

o1-preview
OpenAI
Qwen3.8-27B
Alibaba Cloud / Qwen Team
Benchmark wins
0 of 1
1 of 1
Input price
$15.00 / M
— / M
Output price
$60.00 / M
— / M
Context window
128,000
—
Released
Sep 2024
Aug 2026
License
Proprietary
Apache 2.0

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

o1-preview outperforms in 0 benchmarks, while Qwen3.8-27B is better at 1 benchmark (GPQA).

Qwen3.8-27B significantly outperforms across most benchmarks.

Tue Aug 25 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only o1-preview specifies input context (128,000 tokens). Only o1-preview specifies output context (32,768 tokens).

OpenAI
o1-preview
Input128,000 tokens
Output32,768 tokens
Alibaba Cloud / Qwen Team
Qwen3.8-27B
Input- tokens
Output- tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Qwen3.8-27B supports multimodal inputs, whereas o1-preview does not.

Qwen3.8-27B can handle both text and other forms of data like images, making it suitable for multimodal applications.

o1-preview

Text
Images
Audio
Video

Qwen3.8-27B

Text
Images
Audio
Video

License

Usage and distribution terms

o1-preview is licensed under a proprietary license, while Qwen3.8-27B uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

o1-preview

Proprietary

Closed source

Qwen3.8-27B

Apache 2.0

Open weights

Release Timeline

When each model was launched

o1-preview was released on 2024-09-12, while Qwen3.8-27B was released on 2026-08-14.

Qwen3.8-27B is 23 months newer than o1-preview.

o1-preview

Sep 12, 2024

1.9 years ago

Qwen3.8-27B

Aug 14, 2026

1 weeks ago

1.9yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against o1-preview and Qwen3.8-27B side-by-side, then vote on the output you prefer.

o1-preview
✓ Preferred
Qwen3.8-27B
Open in Playground

FAQ

Common questions about o1-preview vs Qwen3.8-27B.

Which is better, o1-preview or Qwen3.8-27B?

Qwen3.8-27B significantly outperforms across most benchmarks. o1-preview is made by OpenAI and Qwen3.8-27B is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does o1-preview compare to Qwen3.8-27B in benchmarks?

o1-preview scores MGSM: 90.8%, MMLU: 90.8%, MATH: 85.5%, GPQA: 73.3%, LiveBench: 52.3%. Qwen3.8-27B scores MathVision: 94.6%, OmniDocBench 1.5: 91.1%, LiveCodeBench v6: 90.3%, CharXiv-R: 90.2%, GPQA: 89.2%.

What are the context window sizes for o1-preview and Qwen3.8-27B?

o1-preview supports 128K tokens and Qwen3.8-27B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between o1-preview and Qwen3.8-27B?

Key differences include multimodal support (no vs yes), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes o1-preview and Qwen3.8-27B?

o1-preview is developed by OpenAI and Qwen3.8-27B is developed by Alibaba Cloud / Qwen Team.

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