Model Comparison

Gemma 2 9B vs o1-previewWhich is better in 2026?

o1-preview significantly outperforms across most benchmarks.

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

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

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

Choose Gemma 2 9B if…

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

Choose o1-preview if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Sep 2024
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemma 2 9B outperforms in 0 benchmarks, while o1-preview is better at 2 benchmarks (MATH, MMLU).

o1-preview significantly outperforms across most benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o1-preview specifies input context (128,000 tokens). Only o1-preview specifies output context (32,768 tokens).

Google
Gemma 2 9B
Input- tokens
Output- tokens
OpenAI
o1-preview
Input128,000 tokens
Output32,768 tokens
Sat Jun 13 2026 • llm-stats.com

License

Usage and distribution terms

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

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

Gemma 2 9B

Gemma

Open weights

o1-preview

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 9B was released on 2024-06-27, while o1-preview was released on 2024-09-12.

o1-preview is 3 months newer than Gemma 2 9B.

Gemma 2 9B

Jun 27, 2024

2.0 years ago

o1-preview

Sep 12, 2024

1.8 years ago

2mo newer

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

Google
Has open weights
OpenAI
Larger context window (128,000 tokens)
Higher MATH score (85.5% vs 36.6%)
Higher MMLU score (90.8% vs 71.3%)

Detailed Comparison

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

FAQ

Common questions about Gemma 2 9B vs o1-preview.

Which is better, Gemma 2 9B or o1-preview?

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

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

Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%. o1-preview scores MGSM: 90.8%, MMLU: 90.8%, MATH: 85.5%, GPQA: 73.3%, LiveBench: 52.3%.

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

Gemma 2 9B supports an unknown number of tokens and o1-preview supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemma 2 9B and o1-preview?

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

Who makes Gemma 2 9B and o1-preview?

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

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