Model Comparison

o3-mini vs Qwen2.5 14B InstructWhich is better in 2026?

o3-mini significantly outperforms across most benchmarks.

Verdict: o3-mini vs Qwen2.5 14B Instruct — which is better?

o3-mini (by OpenAI) and Qwen2.5 14B Instruct (by Alibaba Cloud / Qwen Team) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

o3-mini outperforms in 3 benchmarks (GPQA, MATH, MMLU), while Qwen2.5 14B Instruct is better at 0 benchmarks. o3-mini significantly outperforms across most benchmarks.

Choose o3-mini if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Jan 2025

Choose Qwen2.5 14B Instruct if…

  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

o3-mini outperforms in 3 benchmarks (GPQA, MATH, MMLU), while Qwen2.5 14B Instruct is better at 0 benchmarks.

o3-mini significantly outperforms across most benchmarks.

Fri Jun 12 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o3-mini specifies input context (200,000 tokens). Only o3-mini specifies output context (100,000 tokens).

OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Alibaba Cloud / Qwen Team
Qwen2.5 14B Instruct
Input- tokens
Output- tokens
Fri Jun 12 2026 • llm-stats.com

License

Usage and distribution terms

o3-mini is licensed under a proprietary license, while Qwen2.5 14B Instruct uses Apache 2.0.

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

o3-mini

Proprietary

Closed source

Qwen2.5 14B Instruct

Apache 2.0

Open weights

Release Timeline

When each model was launched

o3-mini was released on 2025-01-30, while Qwen2.5 14B Instruct was released on 2024-09-19.

o3-mini is 4 months newer than Qwen2.5 14B Instruct.

o3-mini

Jan 30, 2025

1.4 years ago

4mo newer
Qwen2.5 14B Instruct

Sep 19, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while Qwen2.5 14B Instruct's cutoff date is not specified.

We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without Qwen2.5 14B Instruct's cutoff date.

o3-mini

Sep 2023

Qwen2.5 14B Instruct

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (200,000 tokens)
Higher GPQA score (77.2% vs 45.5%)
Higher MATH score (97.9% vs 80.0%)
Higher MMLU score (86.9% vs 79.7%)
Alibaba Cloud / Qwen Team

Qwen2.5 14B Instruct

View details

Alibaba Cloud / Qwen Team

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o3-mini
Alibaba Cloud / Qwen Team
Qwen2.5 14B Instruct

FAQ

Common questions about o3-mini vs Qwen2.5 14B Instruct.

Which is better, o3-mini or Qwen2.5 14B Instruct?

o3-mini significantly outperforms across most benchmarks. o3-mini is made by OpenAI and Qwen2.5 14B Instruct 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 o3-mini compare to Qwen2.5 14B Instruct in benchmarks?

o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%. Qwen2.5 14B Instruct scores GSM8k: 94.8%, HumanEval: 83.5%, MBPP: 82.0%, MATH: 80.0%, MMLU-Redux: 80.0%.

What are the context window sizes for o3-mini and Qwen2.5 14B Instruct?

o3-mini supports 200K tokens and Qwen2.5 14B Instruct 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 o3-mini and Qwen2.5 14B Instruct?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes o3-mini and Qwen2.5 14B Instruct?

o3-mini is developed by OpenAI and Qwen2.5 14B Instruct is developed by Alibaba Cloud / Qwen Team.

Related comparisons