Model Comparison

Gemma 2 9B vs GPT-4o mini

GPT-4o mini significantly outperforms across most benchmarks.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemma 2 9B outperforms in 0 benchmarks, while GPT-4o mini is better at 3 benchmarks (HumanEval, MATH, MMLU).

GPT-4o 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 GPT-4o mini specifies input context (128,000 tokens). Only GPT-4o mini specifies output context (16,384 tokens).

Google
Gemma 2 9B
Input- tokens
Output- tokens
OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
Wed May 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o mini supports multimodal inputs, whereas Gemma 2 9B does not.

GPT-4o mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemma 2 9B

Text
Images
Audio
Video

GPT-4o mini

Text
Images
Audio
Video

License

Usage and distribution terms

Gemma 2 9B is licensed under Gemma, while GPT-4o 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

GPT-4o mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 9B was released on 2024-06-27, while GPT-4o mini was released on 2024-07-18.

GPT-4o mini is 1 month newer than Gemma 2 9B.

Gemma 2 9B

Jun 27, 2024

1.9 years ago

GPT-4o mini

Jul 18, 2024

1.8 years ago

3w newer

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Gemma 2 9B's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without Gemma 2 9B's cutoff date.

Gemma 2 9B

—

GPT-4o mini

Oct 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Has open weights
OpenAI
Larger context window (128,000 tokens)
Supports multimodal inputs
Higher HumanEval score (87.2% vs 40.2%)
Higher MATH score (70.2% vs 36.6%)
Higher MMLU score (82.0% vs 71.3%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemma 2 9B
OpenAI
GPT-4o mini

FAQ

Common questions about Gemma 2 9B vs GPT-4o mini.

Which is better, Gemma 2 9B or GPT-4o mini?

GPT-4o mini significantly outperforms across most benchmarks. Gemma 2 9B is made by Google and GPT-4o 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 GPT-4o mini in benchmarks?

Gemma 2 9B scores ARC-E: 88.0%, BoolQ: 84.2%, HellaSwag: 81.9%, PIQA: 81.7%, Winogrande: 80.6%. GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%.

What are the context window sizes for Gemma 2 9B and GPT-4o mini?

Gemma 2 9B supports an unknown number of tokens and GPT-4o mini 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 GPT-4o mini?

Key differences include multimodal support (no vs yes), licensing (Gemma vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemma 2 9B and GPT-4o mini?

Gemma 2 9B is developed by Google and GPT-4o mini is developed by OpenAI.