Model Comparison

Gemma 2 9B vs o3-mini

o3-mini significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemma 2 9B outperforms in 0 benchmarks, while o3-mini is better at 2 benchmarks (MATH, MMLU).

o3-mini significantly outperforms across most benchmarks.

Wed May 06 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).

Google
Gemma 2 9B
Input- tokens
Output- tokens
OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Wed May 06 2026 • llm-stats.com

License

Usage and distribution terms

Gemma 2 9B is licensed under Gemma, while o3-mini 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

o3-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 9B was released on 2024-06-27, while o3-mini was released on 2025-01-30.

o3-mini is 7 months newer than Gemma 2 9B.

Gemma 2 9B

Jun 27, 2024

1.9 years ago

o3-mini

Jan 30, 2025

1.3 years ago

7mo newer

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while Gemma 2 9B'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 Gemma 2 9B's cutoff date.

Gemma 2 9B

—

o3-mini

Sep 2023

Outputs Comparison

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Key Takeaways

Google
Has open weights
OpenAI
Larger context window (200,000 tokens)
Higher MATH score (97.9% vs 36.6%)
Higher MMLU score (86.9% vs 71.3%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemma 2 9B
OpenAI
o3-mini

FAQ

Common questions about Gemma 2 9B vs o3-mini.

Which is better, Gemma 2 9B or o3-mini?

o3-mini significantly outperforms across most benchmarks. Gemma 2 9B is made by Google and o3-mini 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 o3-mini in benchmarks?

Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%. o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%.

What are the context window sizes for Gemma 2 9B and o3-mini?

Gemma 2 9B supports an unknown number of tokens and o3-mini supports 200K 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 o3-mini?

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

Who makes Gemma 2 9B and o3-mini?

Gemma 2 9B is developed by Google and o3-mini is developed by OpenAI.