o3 vs Qwen3.8-27B
Qwen3.8-27B significantly outperforms across most benchmarks.
OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
o3 outperforms in 0 benchmarks, while Qwen3.8-27B is better at 4 benchmarks (CharXiv-R, ERQA, GPQA, Humanity's Last Exam). Qwen3.8-27B significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose o3
- you want predictable pricing at $2.00/M input and $8.00/M output
Choose Qwen3.8-27B
- you want the strongest raw capability — it leads on 4 of 4 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.
Performance Benchmarks
Comparative analysis across standard metrics
o3 outperforms in 0 benchmarks, while Qwen3.8-27B is better at 4 benchmarks (CharXiv-R, ERQA, GPQA, Humanity's Last Exam).
Qwen3.8-27B significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only o3 specifies input context (200,000 tokens). Only o3 specifies output context (100,000 tokens).
Input Capabilities
Supported data types and modalities
Both o3 and Qwen3.8-27B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
o3
Qwen3.8-27B
License
Usage and distribution terms
o3 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.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
o3 was released on 2025-04-16, while Qwen3.8-27B was released on 2026-08-14.
Qwen3.8-27B is 16 months newer than o3.
Apr 16, 2025
1.4 years ago
Aug 14, 2026
1 weeks ago
1.3yr newerKnowledge Cutoff
When training data ends
o3 has a documented knowledge cutoff of 2024-05-31, while Qwen3.8-27B's cutoff date is not specified.
We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without Qwen3.8-27B's cutoff date.
May 2024
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Outputs Comparison
Judge for yourself.
Run your own prompts against o3 and Qwen3.8-27B side-by-side, then vote on the output you prefer.
FAQ
Common questions about o3 vs Qwen3.8-27B.