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Claude Opus 5 vs Phi 4 Mini Reasoning

Claude Opus 5 leads the LLM Stats Score 54.9 to 7.2.

Anthropic · Microsoft · Updated for 2026

Which is better?

Claude Opus 5 leads the overall LLM Stats Score 54.9 to 7.2, ranking #5 overall.

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

Choose Claude Opus 5

  • overall performance matters — it scores 54.9 and ranks #5 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Jul 2026

Choose Phi 4 Mini Reasoning

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

At a glance

The differences that matter most.

Claude Opus 5
Anthropic
Phi 4 Mini Reasoning
Microsoft
Core performance indexes
LLM Stats Score
54.9
#5
7.2
#288
Reasoning
53.9
#4
7.5
#279
Cost, coverage & limits
Benchmark wins
—
—
Input price
$5.00 / M
— / M
Output price
$25.00 / M
— / M
Context window
1,000,000
—

Individual benchmarks

13 reported for Claude Opus 5 · 3 for Phi 4 Mini Reasoning

No common benchmarks found

Claude Opus 5 and Phi 4 Mini Reasoningdon'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

Context Window

Maximum input and output token capacity

Only Claude Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Microsoft
Phi 4 Mini Reasoning
Input- tokens
Output- tokens
Mon Sep 14 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Opus 5 supports multimodal inputs, whereas Phi 4 Mini Reasoning does not.

Claude Opus 5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 5

Text
Images
Audio
Video

Phi 4 Mini Reasoning

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5 is licensed under a proprietary license, while Phi 4 Mini Reasoning uses MIT.

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

Claude Opus 5

Proprietary

Closed source

Phi 4 Mini Reasoning

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Phi 4 Mini Reasoning was released on 2025-04-30.

Claude Opus 5 is 15 months newer than Phi 4 Mini Reasoning.

Claude Opus 5

Jul 24, 2026

1 months ago

1.2yr newer
Phi 4 Mini Reasoning

Apr 30, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Phi 4 Mini Reasoning has a documented knowledge cutoff of 2025-02-01, while Claude Opus 5's cutoff date is not specified.

We can confirm Phi 4 Mini Reasoning's training data extends to 2025-02-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

Phi 4 Mini Reasoning

Feb 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 5 and Phi 4 Mini Reasoning side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Phi 4 Mini Reasoning
Open in Playground

FAQ

Common questions about Claude Opus 5 vs Phi 4 Mini Reasoning.

Which is better, Claude Opus 5 or Phi 4 Mini Reasoning?

Claude Opus 5 leads the LLM Stats Score 54.9 to 7.2. Claude Opus 5 is made by Anthropic and Phi 4 Mini Reasoning is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5 compare to Phi 4 Mini Reasoning in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Phi 4 Mini Reasoning scores MATH-500: 94.6%, AIME: 57.5%, GPQA: 52.0%.

What are the context window sizes for Claude Opus 5 and Phi 4 Mini Reasoning?

Claude Opus 5 supports 1.0M tokens and Phi 4 Mini Reasoning supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 5 and Phi 4 Mini Reasoning?

Key differences include LLM Stats Score (54.9 vs 7.2), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and Phi 4 Mini Reasoning?

Claude Opus 5 is developed by Anthropic and Phi 4 Mini Reasoning is developed by Microsoft.

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