Model Comparison

Gemini Diffusion vs o4-miniWhich is better in 2026?

o4-mini significantly outperforms across most benchmarks.

Verdict: Gemini Diffusion vs o4-mini — which is better?

Gemini Diffusion (by Google) and o4-mini (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.

Gemini Diffusion outperforms in 0 benchmarks, while o4-mini is better at 3 benchmarks (AIME 2025, GPQA, SWE-Bench Verified). o4-mini significantly outperforms across most benchmarks.

Choose Gemini Diffusion if…

  • you want the most recent training data — it shipped May 2025

Choose o4-mini if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini Diffusion outperforms in 0 benchmarks, while o4-mini is better at 3 benchmarks (AIME 2025, GPQA, SWE-Bench Verified).

o4-mini significantly outperforms across most benchmarks.

Sun Jul 26 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o4-mini specifies input context (200,000 tokens). Only o4-mini specifies output context (100,000 tokens).

Google
Gemini Diffusion
Input- tokens
Output- tokens
OpenAI
o4-mini
Input200,000 tokens
Output100,000 tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

o4-mini supports multimodal inputs, whereas Gemini Diffusion does not.

o4-mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini Diffusion

Text
Images
Audio
Video

o4-mini

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini Diffusion

Proprietary

Closed source

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while o4-mini was released on 2025-04-16.

Gemini Diffusion is 1 month newer than o4-mini.

Gemini Diffusion

May 20, 2025

1.2 years ago

1mo newer
o4-mini

Apr 16, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

o4-mini has a documented knowledge cutoff of 2024-05-31, while Gemini Diffusion's cutoff date is not specified.

We can confirm o4-mini's training data extends to 2024-05-31, but cannot make a direct comparison without Gemini Diffusion's cutoff date.

Gemini Diffusion

—

o4-mini

May 2024

Outputs Comparison

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Key Takeaways

Google

No standout differentiators in the data we have for this pair.

OpenAI
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher AIME 2025 score (92.7% vs 23.3%)
Higher GPQA score (81.4% vs 40.4%)
Higher SWE-Bench Verified score (68.1% vs 22.9%)
GoogleGemini Diffusion
OpenAIo4-mini
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini Diffusion and o4-mini side-by-side, then vote on the output you prefer.

Gemini Diffusion
✓ Preferred
o4-mini
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini Diffusion
OpenAI
o4-mini

FAQ

Common questions about Gemini Diffusion vs o4-mini.

Which is better, Gemini Diffusion or o4-mini?

o4-mini significantly outperforms across most benchmarks. Gemini Diffusion is made by Google and o4-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini Diffusion compare to o4-mini in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. o4-mini scores AIME 2024: 93.4%, AIME 2025: 92.7%, MathVista: 84.3%, MMMU: 81.6%, GPQA: 81.4%.

What are the context window sizes for Gemini Diffusion and o4-mini?

Gemini Diffusion supports an unknown number of tokens and o4-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 Gemini Diffusion and o4-mini?

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

Who makes Gemini Diffusion and o4-mini?

Gemini Diffusion is developed by Google and o4-mini is developed by OpenAI.

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