Model Comparison

Claude 3.7 Sonnet vs Phi 4 Reasoning PlusWhich is better in 2026?

Both models are evenly matched across the benchmarks.

Verdict: Claude 3.7 Sonnet vs Phi 4 Reasoning Plus — which is better?

Claude 3.7 Sonnet (by Anthropic) and Phi 4 Reasoning Plus (by Microsoft) 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.

Claude 3.7 Sonnet outperforms in 2 benchmarks (GPQA, IFEval), while Phi 4 Reasoning Plus is better at 2 benchmarks (AIME 2024, AIME 2025). Both models are evenly matched across the benchmarks.

Choose Claude 3.7 Sonnet if…

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Phi 4 Reasoning Plus if…

  • you want the most recent training data — it shipped Apr 2025
  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude 3.7 Sonnet outperforms in 2 benchmarks (GPQA, IFEval), while Phi 4 Reasoning Plus is better at 2 benchmarks (AIME 2024, AIME 2025).

Both models are evenly matched across the benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude 3.7 Sonnet specifies input context (200,000 tokens). Only Claude 3.7 Sonnet specifies output context (128,000 tokens).

Anthropic
Claude 3.7 Sonnet
Input200,000 tokens
Output128,000 tokens
Microsoft
Phi 4 Reasoning Plus
Input- tokens
Output- tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3.7 Sonnet supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

Claude 3.7 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3.7 Sonnet

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

Claude 3.7 Sonnet 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.

Claude 3.7 Sonnet

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Phi 4 Reasoning Plus was released on 2025-04-30.

Phi 4 Reasoning Plus is 2 months newer than Claude 3.7 Sonnet.

Claude 3.7 Sonnet

Feb 24, 2025

1.3 years ago

Phi 4 Reasoning Plus

Apr 30, 2025

1.1 years ago

2mo newer

Knowledge Cutoff

When training data ends

Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while Claude 3.7 Sonnet'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 Claude 3.7 Sonnet's cutoff date.

Claude 3.7 Sonnet

—

Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher GPQA score (84.8% vs 68.9%)
Higher IFEval score (93.2% vs 84.9%)
Microsoft
Has open weights
Higher AIME 2024 score (81.3% vs 80.0%)
Higher AIME 2025 score (78.0% vs 54.8%)
AnthropicClaude 3.7 Sonnet
MicrosoftPhi 4 Reasoning Plus
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3.7 Sonnet
Microsoft
Phi 4 Reasoning Plus

FAQ

Common questions about Claude 3.7 Sonnet vs Phi 4 Reasoning Plus.

Which is better, Claude 3.7 Sonnet or Phi 4 Reasoning Plus?

Both models are evenly matched across the benchmarks. Claude 3.7 Sonnet is made by Anthropic and Phi 4 Reasoning Plus is made by Microsoft. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3.7 Sonnet compare to Phi 4 Reasoning Plus in benchmarks?

Claude 3.7 Sonnet scores MATH-500: 96.2%, IFEval: 93.2%, MMMLU: 86.1%, GPQA: 84.8%, TAU-bench Retail: 81.2%. Phi 4 Reasoning Plus scores FlenQA: 97.9%, HumanEval+: 92.3%, IFEval: 84.9%, OmniMath: 81.9%, AIME 2024: 81.3%.

What are the context window sizes for Claude 3.7 Sonnet and Phi 4 Reasoning Plus?

Claude 3.7 Sonnet supports 200K tokens and Phi 4 Reasoning Plus 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 3.7 Sonnet 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 Claude 3.7 Sonnet and Phi 4 Reasoning Plus?

Claude 3.7 Sonnet is developed by Anthropic and Phi 4 Reasoning Plus is developed by Microsoft.

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