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Gemini 4 Carbon vs Phi 4 Reasoning Plus

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 14.4.

Google · Microsoft · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 59.0 to 14.4, ranking #2 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 4 Carbon

  • overall performance matters — it scores 59.0 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

Choose Phi 4 Reasoning Plus

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

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
Phi 4 Reasoning Plus
Microsoft
Core performance indexes
LLM Stats Score
59.0
#2
14.4
#267
Reasoning
54.9
#5
14.9
#259
Coding
48.1
#3
5.5
#227
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

16 reported for Gemini 4 Carbon · 11 for Phi 4 Reasoning Plus

No common benchmarks found

Gemini 4 Carbon and Phi 4 Reasoning Plusdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Gemini 4 Carbon supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

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

Gemini 4 Carbon

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

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

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

Gemini 4 Carbon

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while Phi 4 Reasoning Plus was released on 2025-04-30.

Gemini 4 Carbon is 18 months newer than Phi 4 Reasoning Plus.

Gemini 4 Carbon

Oct 28, 2026

-3 days ago

1.5yr newer
Phi 4 Reasoning Plus

Apr 30, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

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

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

Gemini 4 Carbon

—

Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

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

Gemini 4 Carbon
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs Phi 4 Reasoning Plus.

Which is better, Gemini 4 Carbon or Phi 4 Reasoning Plus?

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 14.4. Gemini 4 Carbon is made by Google and Phi 4 Reasoning Plus is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 4 Carbon compare to Phi 4 Reasoning Plus in benchmarks?

Gemini 4 Carbon scores Gray Swan IPI Benchmark: 100.0%, Vending-Bench 2: 100.0%, Graphwalks BFS >128k: 96.2%, WebDev Arena: 88.4%, SEC-bench Pro: 88.2%. Phi 4 Reasoning Plus scores FlenQA: 97.9%, HumanEval+: 92.3%, IFEval: 84.9%, OmniMath: 81.9%, AIME 2024: 81.3%.

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

Key differences include LLM Stats Score (59.0 vs 14.4), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and Phi 4 Reasoning Plus?

Gemini 4 Carbon is developed by Google and Phi 4 Reasoning Plus is developed by Microsoft.

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