o1-mini vs Phi 4 Reasoning Plus
o1-mini and Phi 4 Reasoning Plus are closely matched at 10.1 and 15.2 on the LLM Stats Score.
OpenAI · Microsoft · Updated for 2026
Which is better?
o1-mini and Phi 4 Reasoning Plus are closely matched on the overall LLM Stats Score at 10.1 and 15.2.
In the 1 individual benchmarks reported for both models, Phi 4 Reasoning Plus wins 1; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose o1-mini
- you want predictable pricing at $3.00/M input and $12.00/M output
Choose Phi 4 Reasoning Plus
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you want the most recent training data — it shipped Apr 2025
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
6 reported for o1-mini · 11 for Phi 4 Reasoning Plus
o1-mini outperforms in 0 benchmarks, while Phi 4 Reasoning Plus is better at 1 benchmark (GPQA).
Phi 4 Reasoning Plus significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only o1-mini specifies input context (128,000 tokens). Only o1-mini specifies output context (65,536 tokens).
License
Usage and distribution terms
o1-mini 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.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
o1-mini was released on 2024-09-12, while Phi 4 Reasoning Plus was released on 2025-04-30.
Phi 4 Reasoning Plus is 8 months newer than o1-mini.
Sep 12, 2024
2.0 years ago
Apr 30, 2025
1.4 years ago
7mo newerKnowledge Cutoff
When training data ends
Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while o1-mini'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 o1-mini's cutoff date.
—
Mar 2025
Outputs Comparison
Judge for yourself.
Run your own prompts against o1-mini and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.
FAQ
Common questions about o1-mini vs Phi 4 Reasoning Plus.