o1 vs Qwen2.5 14B Instruct
o1 significantly outperforms across most benchmarks.
OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
o1 outperforms in 5 benchmarks (GPQA, GSM8k, HumanEval, MATH, MMLU), while Qwen2.5 14B Instruct is better at 0 benchmarks. o1 significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose o1
- you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
- you want the most recent training data — it shipped Dec 2024
Choose Qwen2.5 14B Instruct
- 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
o1 outperforms in 5 benchmarks (GPQA, GSM8k, HumanEval, MATH, MMLU), while Qwen2.5 14B Instruct is better at 0 benchmarks.
o1 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only o1 specifies input context (200,000 tokens). Only o1 specifies output context (100,000 tokens).
License
Usage and distribution terms
o1 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.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
o1 was released on 2024-12-17, while Qwen2.5 14B Instruct was released on 2024-09-19.
o1 is 3 months newer than Qwen2.5 14B Instruct.
Dec 17, 2024
1.7 years ago
2mo newerSep 19, 2024
1.9 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against o1 and Qwen2.5 14B Instruct side-by-side, then vote on the output you prefer.
FAQ
Common questions about o1 vs Qwen2.5 14B Instruct.