Model Comparison

Gemini Diffusion vs GPT-4o miniWhich is better in 2026?

Gemini Diffusion significantly outperforms across most benchmarks.

Verdict: Gemini Diffusion vs GPT-4o mini — which is better?

Gemini Diffusion (by Google) and GPT-4o 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 3 benchmarks (GPQA, HumanEval, SWE-Bench Verified), while GPT-4o mini is better at 0 benchmarks. Gemini Diffusion significantly outperforms across most benchmarks.

Choose Gemini Diffusion if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped May 2025

Choose GPT-4o mini if…

  • you want predictable pricing at $0.15/M input and $0.60/M output

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini Diffusion outperforms in 3 benchmarks (GPQA, HumanEval, SWE-Bench Verified), while GPT-4o mini is better at 0 benchmarks.

Gemini Diffusion significantly outperforms across most benchmarks.

Tue Jul 21 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
Gemini Diffusion
Input- tokens
Output- tokens
OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
Tue Jul 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o mini supports multimodal inputs, whereas Gemini Diffusion does not.

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

Gemini Diffusion

Text
Images
Audio
Video

GPT-4o 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

GPT-4o mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while GPT-4o mini was released on 2024-07-18.

Gemini Diffusion is 10 months newer than GPT-4o mini.

Gemini Diffusion

May 20, 2025

1.2 years ago

10mo newer
GPT-4o mini

Jul 18, 2024

2.0 years ago

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Gemini Diffusion'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 Gemini Diffusion's cutoff date.

Gemini Diffusion

—

GPT-4o mini

Oct 2023

Outputs Comparison

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Key Takeaways

Google
Higher GPQA score (40.4% vs 40.2%)
Higher HumanEval score (89.6% vs 87.2%)
Higher SWE-Bench Verified score (22.9% vs 8.7%)
OpenAI
Larger context window (128,000 tokens)
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini Diffusion and GPT-4o mini side-by-side, then vote on the output you prefer.

Gemini Diffusion
✓ Preferred
GPT-4o mini
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini Diffusion
OpenAI
GPT-4o mini

FAQ

Common questions about Gemini Diffusion vs GPT-4o mini.

Which is better, Gemini Diffusion or GPT-4o mini?

Gemini Diffusion significantly outperforms across most benchmarks. Gemini Diffusion 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 Gemini Diffusion compare to GPT-4o mini in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. 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 Gemini Diffusion and GPT-4o mini?

Gemini Diffusion 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 Gemini Diffusion and GPT-4o mini?

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

Who makes Gemini Diffusion and GPT-4o mini?

Gemini Diffusion is developed by Google and GPT-4o mini is developed by OpenAI.

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