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o1-pro vs Qwen3.5-0.8B

o1-pro leads the LLM Stats Score 19.9 to -5.9.

OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026

Which is better?

o1-pro leads the overall LLM Stats Score 19.9 to -5.9, ranking #189 overall.

In the 1 individual benchmarks reported for both models, o1-pro wins 1; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose o1-pro

  • overall performance matters — it scores 19.9 and ranks #189 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

Choose Qwen3.5-0.8B

  • you want the most recent training data — it shipped Mar 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

o1-pro
OpenAI
Qwen3.5-0.8B
Alibaba Cloud / Qwen Team
Core performance indexes
LLM Stats Score
19.9
#189
-5.9
#348
Reasoning
20.2
#178
-3.2
#323
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

2 reported for o1-pro · 20 for Qwen3.5-0.8B

1 shared

o1-pro outperforms in 1 benchmarks (GPQA), while Qwen3.5-0.8B is better at 0 benchmarks.

o1-pro significantly outperforms across most benchmarks.

Fri Sep 04 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Both o1-pro and Qwen3.5-0.8B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

o1-pro

Text
Images
Audio
Video

Qwen3.5-0.8B

Text
Images
Audio
Video

License

Usage and distribution terms

o1-pro is licensed under a proprietary license, while Qwen3.5-0.8B uses Apache 2.0.

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

o1-pro

Proprietary

Closed source

Qwen3.5-0.8B

Apache 2.0

Open weights

Release Timeline

When each model was launched

o1-pro was released on 2024-12-17, while Qwen3.5-0.8B was released on 2026-03-02.

Qwen3.5-0.8B is 15 months newer than o1-pro.

o1-pro

Dec 17, 2024

1.7 years ago

Qwen3.5-0.8B

Mar 2, 2026

6 months ago

1.2yr newer

Knowledge Cutoff

When training data ends

o1-pro has a documented knowledge cutoff of 2023-09-30, while Qwen3.5-0.8B's cutoff date is not specified.

We can confirm o1-pro's training data extends to 2023-09-30, but cannot make a direct comparison without Qwen3.5-0.8B's cutoff date.

o1-pro

Sep 2023

Qwen3.5-0.8B

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against o1-pro and Qwen3.5-0.8B side-by-side, then vote on the output you prefer.

o1-pro
✓ Preferred
Qwen3.5-0.8B
Open in Playground

FAQ

Common questions about o1-pro vs Qwen3.5-0.8B.

Which is better, o1-pro or Qwen3.5-0.8B?

o1-pro leads the LLM Stats Score 19.9 to -5.9. o1-pro is made by OpenAI and Qwen3.5-0.8B is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does o1-pro compare to Qwen3.5-0.8B in benchmarks?

o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%. Qwen3.5-0.8B scores MMLU-Redux: 59.5%, Global PIQA: 59.4%, C-Eval: 50.5%, MMMLU: 44.3%, IFEval: 44.0%.

What are the main differences between o1-pro and Qwen3.5-0.8B?

Key differences include LLM Stats Score (19.9 vs -5.9), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes o1-pro and Qwen3.5-0.8B?

o1-pro is developed by OpenAI and Qwen3.5-0.8B is developed by Alibaba Cloud / Qwen Team.

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