Phi 4 Reasoning Plus
by Microsoft
Phi 4 Reasoning Plus is a model from Microsoft, released on April 30, 2025. It ranks #143 of 220 models by Intelligence Score with a score of 15.
Phi-4-reasoning-plus is a state-of-the-art open-weight reasoning model finetuned from Phi-4 using supervised fine-tuning and reinforcement learning. It focuses on math, science, and coding skills. This 'plus' version has higher accuracy due to additional RL training but may have higher latency.
Key specs
| Provider | Microsoft |
|---|---|
| Release date | 2025-04-30 |
| License | open source |
| Intelligence Score | 15 |
| Coding index | 5.6 |
Quick answers
Is Phi 4 Reasoning Plus open source?
Yes. Phi 4 Reasoning Plus is an open model released under the open source license.
When was Phi 4 Reasoning Plus released?
Microsoft released Phi 4 Reasoning Plus on April 30, 2025.
How does Phi 4 Reasoning Plus compare to Claude Opus 5.5 (Reasoning)?
Phi 4 Reasoning Plus scores 15 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1.
Compare on the AI leaderboard · All AI models
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