Model Comparison

Phi 4 vs Phi 4 Reasoning

Phi 4 Reasoning significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Phi 4 outperforms in 1 benchmarks (Arena Hard), while Phi 4 Reasoning is better at 5 benchmarks (GPQA, HumanEval+, IFEval, MMLU-Pro, PhiBench).

Phi 4 Reasoning significantly outperforms across most benchmarks.

Mon May 04 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

700.0M diff

Phi 4 has 0.7B more parameters than Phi 4 Reasoning, making it 5.0% larger.

Microsoft
Phi 4
14.7Bparameters
Microsoft
Phi 4 Reasoning
14.0Bparameters
14.7B
Phi 4
14.0B
Phi 4 Reasoning

Context Window

Maximum input and output token capacity

Only Phi 4 specifies input context (16,000 tokens). Only Phi 4 specifies output context (16,000 tokens).

Microsoft
Phi 4
Input16,000 tokens
Output16,000 tokens
Microsoft
Phi 4 Reasoning
Input- tokens
Output- tokens
Mon May 04 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under MIT.

Both models share the same licensing terms, providing consistent usage rights.

Phi 4

MIT

Open weights

Phi 4 Reasoning

MIT

Open weights

Release Timeline

When each model was launched

Phi 4 was released on 2024-12-12, while Phi 4 Reasoning was released on 2025-04-30.

Phi 4 Reasoning is 5 months newer than Phi 4.

Phi 4

Dec 12, 2024

1.4 years ago

Phi 4 Reasoning

Apr 30, 2025

1.0 years ago

4mo newer

Knowledge Cutoff

When training data ends

Phi 4 has a knowledge cutoff of 2024-06-01, while Phi 4 Reasoning has a cutoff of 2025-03-01.

Phi 4 Reasoning has more recent training data (up to 2025-03-01), making it potentially better informed about events through that date compared to Phi 4 (2024-06-01).

Phi 4

Jun 2024

Phi 4 Reasoning

Mar 2025

9 mo newer

Outputs Comparison

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Key Takeaways

Microsoft
Larger context window (16,000 tokens)
Higher Arena Hard score (75.4% vs 73.3%)
Microsoft
Higher GPQA score (65.8% vs 56.1%)
Higher HumanEval+ score (92.9% vs 82.8%)
Higher IFEval score (83.4% vs 63.0%)
Higher MMLU-Pro score (74.3% vs 70.4%)
Higher PhiBench score (70.6% vs 56.2%)

Detailed Comparison

AI Model Comparison Table
Feature
Microsoft
Phi 4
Microsoft
Phi 4 Reasoning

FAQ

Common questions about Phi 4 vs Phi 4 Reasoning.

Which is better, Phi 4 or Phi 4 Reasoning?

Phi 4 Reasoning significantly outperforms across most benchmarks. Phi 4 is made by Microsoft 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 Phi 4 compare to Phi 4 Reasoning in benchmarks?

Phi 4 scores MMLU: 84.8%, HumanEval+: 82.8%, HumanEval: 82.6%, MGSM: 80.6%, MATH: 80.4%. Phi 4 Reasoning scores FlenQA: 97.7%, HumanEval+: 92.9%, IFEval: 83.4%, OmniMath: 76.6%, AIME 2024: 75.3%.

What are the context window sizes for Phi 4 and Phi 4 Reasoning?

Phi 4 supports 16K tokens and Phi 4 Reasoning supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.