Model Comparison

o1 vs Gemma 2 9BWhich is better in 2026?

o1 significantly outperforms across most benchmarks.

Verdict: o1 vs Gemma 2 9B — which is better?

o1 (by OpenAI) and Gemma 2 9B (by Google) 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.

o1 outperforms in 4 benchmarks (GSM8k, HumanEval, MATH, MMLU), while Gemma 2 9B is better at 0 benchmarks. o1 significantly outperforms across most benchmarks.

Choose o1 if…

  • you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
  • you want the most recent training data — it shipped Dec 2024

Choose Gemma 2 9B if…

  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

o1 outperforms in 4 benchmarks (GSM8k, HumanEval, MATH, MMLU), while Gemma 2 9B is better at 0 benchmarks.

o1 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o1 specifies input context (200,000 tokens). Only o1 specifies output context (100,000 tokens).

OpenAI
o1
Input200,000 tokens
Output100,000 tokens
Google
Gemma 2 9B
Input- tokens
Output- tokens
Sun Jun 07 2026 • llm-stats.com

License

Usage and distribution terms

o1 is licensed under a proprietary license, while Gemma 2 9B uses Gemma.

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

o1

Proprietary

Closed source

Gemma 2 9B

Gemma

Open weights

Release Timeline

When each model was launched

o1 was released on 2024-12-17, while Gemma 2 9B was released on 2024-06-27.

o1 is 6 months newer than Gemma 2 9B.

o1

Dec 17, 2024

1.5 years ago

5mo newer
Gemma 2 9B

Jun 27, 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.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (200,000 tokens)
Higher GSM8k score (97.1% vs 68.6%)
Higher HumanEval score (88.1% vs 40.2%)
Higher MATH score (96.4% vs 36.6%)
Higher MMLU score (91.8% vs 71.3%)
Google
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o1
Google
Gemma 2 9B

FAQ

Common questions about o1 vs Gemma 2 9B.

Which is better, o1 or Gemma 2 9B?

o1 significantly outperforms across most benchmarks. o1 is made by OpenAI and Gemma 2 9B is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does o1 compare to Gemma 2 9B in benchmarks?

o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%. Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%.

What are the context window sizes for o1 and Gemma 2 9B?

o1 supports 200K tokens and Gemma 2 9B 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 and Gemma 2 9B?

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

Who makes o1 and Gemma 2 9B?

o1 is developed by OpenAI and Gemma 2 9B is developed by Google.

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