Model Comparison

DeepSeek-V4-Flash-0731 vs Phi 4 Mini ReasoningWhich is better in 2026?

Comparing DeepSeek-V4-Flash-0731 and Phi 4 Mini Reasoning across benchmarks, pricing, and capabilities.

Verdict: DeepSeek-V4-Flash-0731 vs Phi 4 Mini Reasoning — which is better?

DeepSeek-V4-Flash-0731 (by DeepSeek) and Phi 4 Mini Reasoning (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.

Choose DeepSeek-V4-Flash-0731 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Phi 4 Mini Reasoning if…

  • you are already invested in the Microsoft ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek-V4-Flash-0731 and Phi 4 Mini Reasoningdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Model Size

Parameter count comparison

300.2B diff

DeepSeek-V4-Flash-0731 has 300.2B more parameters than Phi 4 Mini Reasoning, making it 7900.0% larger.

DeepSeek
DeepSeek-V4-Flash-0731
304.0Bparameters
Microsoft
Phi 4 Mini Reasoning
3.8Bparameters
304.0B
DeepSeek-V4-Flash-0731
3.8B
Phi 4 Mini Reasoning

Context Window

Maximum input and output token capacity

Only DeepSeek-V4-Flash-0731 specifies input context (1,048,576 tokens). Only DeepSeek-V4-Flash-0731 specifies output context (65,536 tokens).

DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output65,536 tokens
Microsoft
Phi 4 Mini Reasoning
Input- tokens
Output- tokens
Mon Aug 03 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.

DeepSeek-V4-Flash-0731

MIT

Open weights

Phi 4 Mini Reasoning

MIT

Open weights

Release Timeline

When each model was launched

DeepSeek-V4-Flash-0731 was released on 2026-07-31, while Phi 4 Mini Reasoning was released on 2025-04-30.

DeepSeek-V4-Flash-0731 is 15 months newer than Phi 4 Mini Reasoning.

DeepSeek-V4-Flash-0731

Jul 31, 2026

3 days ago

1.3yr newer
Phi 4 Mini Reasoning

Apr 30, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Phi 4 Mini Reasoning has a documented knowledge cutoff of 2025-02-01, while DeepSeek-V4-Flash-0731'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 DeepSeek-V4-Flash-0731's cutoff date.

DeepSeek-V4-Flash-0731

—

Phi 4 Mini Reasoning

Feb 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

DeepSeek
Larger context window (1,048,576 tokens)
Microsoft

No standout differentiators in the data we have for this pair.

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-0731 and Phi 4 Mini Reasoning side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-0731
✓ Preferred
Phi 4 Mini Reasoning
Open in Playground
AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V4-Flash-0731
Microsoft
Phi 4 Mini Reasoning

FAQ

Common questions about DeepSeek-V4-Flash-0731 vs Phi 4 Mini Reasoning.

Which is better, DeepSeek-V4-Flash-0731 or Phi 4 Mini Reasoning?

DeepSeek-V4-Flash-0731 (DeepSeek) and Phi 4 Mini Reasoning (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 DeepSeek-V4-Flash-0731 compare to Phi 4 Mini Reasoning in benchmarks?

DeepSeek-V4-Flash-0731 scores Terminal-Bench 2.1: 82.7%, CyberGym: 76.7%, Toolathlon: 70.3%, DSBench-FullStack: 68.7%, DSBench-Hard: 59.6%. Phi 4 Mini Reasoning scores MATH-500: 94.6%, AIME: 57.5%, GPQA: 52.0%.

What are the context window sizes for DeepSeek-V4-Flash-0731 and Phi 4 Mini Reasoning?

DeepSeek-V4-Flash-0731 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.

Who makes DeepSeek-V4-Flash-0731 and Phi 4 Mini Reasoning?

DeepSeek-V4-Flash-0731 is developed by DeepSeek and Phi 4 Mini Reasoning is developed by Microsoft.

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