Model Comparison

GPT-4o vs Gemma 2 9BWhich is better in 2026?

GPT-4o significantly outperforms across most benchmarks.

Verdict: GPT-4o vs Gemma 2 9B — which is better?

GPT-4o (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.

GPT-4o outperforms in 1 benchmarks (MMLU), while Gemma 2 9B is better at 0 benchmarks. GPT-4o significantly outperforms across most benchmarks.

Choose GPT-4o if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Aug 2024

Choose Gemma 2 9B if…

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

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-4o outperforms in 1 benchmarks (MMLU), while Gemma 2 9B is better at 0 benchmarks.

GPT-4o significantly outperforms across most benchmarks.

Fri Jun 26 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

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

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
Google
Gemma 2 9B
Input- tokens
Output- tokens
Fri Jun 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

GPT-4o

Text
Images
Audio
Video

Gemma 2 9B

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-4o 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.

GPT-4o

Proprietary

Closed source

Gemma 2 9B

Gemma

Open weights

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Gemma 2 9B was released on 2024-06-27.

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

GPT-4o

Aug 6, 2024

1.9 years ago

1mo newer
Gemma 2 9B

Jun 27, 2024

2.0 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 (128,000 tokens)
Supports multimodal inputs
Higher MMLU score (85.7% vs 71.3%)
Google
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-4o and Gemma 2 9B side-by-side, then vote on the output you prefer.

GPT-4o
✓ Preferred
Gemma 2 9B
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-4o
Google
Gemma 2 9B

FAQ

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

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

GPT-4o significantly outperforms across most benchmarks. GPT-4o 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 GPT-4o compare to Gemma 2 9B in benchmarks?

GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. 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 GPT-4o and Gemma 2 9B?

GPT-4o supports 128K 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 GPT-4o and Gemma 2 9B?

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

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

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

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