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Gemini Diffusion vs Phi 4 Reasoning

Phi 4 Reasoning significantly outperforms across most benchmarks.

Google · Microsoft · Updated for 2026

Which is better?

Gemini Diffusion outperforms in 0 benchmarks, while Phi 4 Reasoning is better at 3 benchmarks (AIME 2025, GPQA, LiveCodeBench). Phi 4 Reasoning significantly outperforms across most benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemini Diffusion

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

Choose Phi 4 Reasoning

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini Diffusion
Google
Phi 4 Reasoning
Microsoft
Benchmark wins
0 of 3
3 of 3
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—
Released
May 2025
Apr 2025
License
Proprietary
MIT

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini Diffusion outperforms in 0 benchmarks, while Phi 4 Reasoning is better at 3 benchmarks (AIME 2025, GPQA, LiveCodeBench).

Phi 4 Reasoning significantly outperforms across most benchmarks.

Tue Aug 25 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

License

Usage and distribution terms

Gemini Diffusion is licensed under a proprietary license, while Phi 4 Reasoning uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini Diffusion

Proprietary

Closed source

Phi 4 Reasoning

MIT

Open weights

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while Phi 4 Reasoning was released on 2025-04-30.

Gemini Diffusion is 1 month newer than Phi 4 Reasoning.

Gemini Diffusion

May 20, 2025

1.3 years ago

2w newer
Phi 4 Reasoning

Apr 30, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Phi 4 Reasoning has a documented knowledge cutoff of 2025-03-01, while Gemini Diffusion's cutoff date is not specified.

We can confirm Phi 4 Reasoning's training data extends to 2025-03-01, but cannot make a direct comparison without Gemini Diffusion's cutoff date.

Gemini Diffusion

—

Phi 4 Reasoning

Mar 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

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

Gemini Diffusion
✓ Preferred
Phi 4 Reasoning
Open in Playground

FAQ

Common questions about Gemini Diffusion vs Phi 4 Reasoning.

Which is better, Gemini Diffusion or Phi 4 Reasoning?

Phi 4 Reasoning significantly outperforms across most benchmarks. Gemini Diffusion is made by Google and Phi 4 Reasoning is made by Microsoft. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini Diffusion compare to Phi 4 Reasoning in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. Phi 4 Reasoning scores FlenQA: 97.7%, HumanEval+: 92.9%, IFEval: 83.4%, OmniMath: 76.6%, AIME 2024: 75.3%.

What are the main differences between Gemini Diffusion and Phi 4 Reasoning?

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

Who makes Gemini Diffusion and Phi 4 Reasoning?

Gemini Diffusion is developed by Google and Phi 4 Reasoning is developed by Microsoft.

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