DeepSeek R1 Zero vs Phi 4 Reasoning Plus
DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
DeepSeek · Microsoft · Updated for 2026
Which is better?
DeepSeek R1 Zero outperforms in 2 benchmarks (AIME 2024, GPQA), while Phi 4 Reasoning Plus is better at 1 benchmark (LiveCodeBench). DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose DeepSeek R1 Zero
- you want the strongest raw capability — it leads on 2 of 3 shared benchmarks
Choose Phi 4 Reasoning Plus
- you want the most recent training data — it shipped Apr 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek R1 Zero outperforms in 2 benchmarks (AIME 2024, GPQA), while Phi 4 Reasoning Plus is better at 1 benchmark (LiveCodeBench).
DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
Arena Performance
Playground indexes and blind preference scores
Model Size
Parameter count comparison
DeepSeek R1 Zero has 657.0B more parameters than Phi 4 Reasoning Plus, making it 4692.9% larger.
License
Usage and distribution terms
Both models are licensed under MIT.
Both models share the same licensing terms, providing consistent usage rights.
MIT
Open weights
MIT
Open weights
Release Timeline
When each model was launched
DeepSeek R1 Zero was released on 2025-01-20, while Phi 4 Reasoning Plus was released on 2025-04-30.
Phi 4 Reasoning Plus is 3 months newer than DeepSeek R1 Zero.
Jan 20, 2025
1.6 years ago
Apr 30, 2025
1.3 years ago
3mo newerKnowledge Cutoff
When training data ends
Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while DeepSeek R1 Zero'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 DeepSeek R1 Zero's cutoff date.
—
Mar 2025
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek R1 Zero and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek R1 Zero vs Phi 4 Reasoning Plus.