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GPT-6 Rosalind vs Phi 4 Reasoning Plus

Comparing GPT-6 Rosalind and Phi 4 Reasoning Plus across benchmarks, pricing, and capabilities.

OpenAI · Microsoft · Updated for 2026

Which is better?

GPT-6 Rosalind and Phi 4 Reasoning Plus trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

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

Choose GPT-6 Rosalind

  • 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.

GPT-6 Rosalind
OpenAI
Phi 4 Reasoning Plus
Microsoft
Benchmark wins
—
—
Input price
$15.00 / M
— / M
Output price
$75.00 / M
— / M
Context window
—
—

Individual benchmarks

0 reported for GPT-6 Rosalind · 11 for Phi 4 Reasoning Plus

No common benchmarks found

GPT-6 Rosalind 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

GPT-6 Rosalind supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

GPT-6 Rosalind can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-6 Rosalind

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-6 Rosalind 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.

GPT-6 Rosalind

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

GPT-6 Rosalind was released on 2026-10-30, while Phi 4 Reasoning Plus was released on 2025-04-30.

GPT-6 Rosalind is 18 months newer than Phi 4 Reasoning Plus.

GPT-6 Rosalind

Oct 30, 2026

1 weeks 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 GPT-6 Rosalind'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 GPT-6 Rosalind's cutoff date.

GPT-6 Rosalind

—

Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6 Rosalind and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.

GPT-6 Rosalind
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground

FAQ

Common questions about GPT-6 Rosalind vs Phi 4 Reasoning Plus.

Which is better, GPT-6 Rosalind or Phi 4 Reasoning Plus?

GPT-6 Rosalind (OpenAI) and Phi 4 Reasoning Plus (Microsoft) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-6 Rosalind compare to Phi 4 Reasoning Plus in benchmarks?

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 GPT-6 Rosalind and Phi 4 Reasoning Plus?

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

Who makes GPT-6 Rosalind and Phi 4 Reasoning Plus?

GPT-6 Rosalind is developed by OpenAI and Phi 4 Reasoning Plus is developed by Microsoft.

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