Phi 4 Reasoning Plus: API Pricing, Context Window & Benchmarks
Phi 4 Reasoning Plus is a language model from Microsoft, released in April 2025.
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
Phi 4 Reasoning Plus benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
How Phi 4 Reasoning Plus performs across real-world prompt categories.
Performance by conversation depth
How Phi 4 Reasoning Plus holds up as conversations get longer.
Quality Tracker
Phi 4 Reasoning Plus Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Aug 24 2026Phi 4 Reasoning Plus model size
Phi 4 Reasoning Plus has 14 billion parameters and was trained on 16 billion tokens. See how it compares to other models in the same parameter range.
Phi 4 Reasoning Plus API
Available from the model provider
Phi 4 Reasoning Plus has an official provider API. It is not currently routed through the LLM Stats gateway.
Read the official API documentationPhi 4 Reasoning Plus latency
Phi 4 Reasoning Plus time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
Phi 4 Reasoning Plus examples
Recent arena outputs from Phi 4 Reasoning Plus, picked from the highest-ranked matchups.
Phi 4 Reasoning Plus license
Phi 4 Reasoning Plus is released under the MIT license, which permits commercial use, has 14.0B parameters, has a knowledge cutoff of March 2025.
- License
- MIT
- Commercial use allowed
- Parameters
- 14.0B
- Knowledge cutoff
- March 2025
MIT License - allows commercial use
Phi 4 Reasoning Plus resources
Official sources for Phi 4 Reasoning Plus: api documentation, paper or system card, official launch post, model weights.
Phi 4 Reasoning Plus vs other models
The most-compared alternatives to Phi 4 Reasoning Plus are Claude 3.5 Sonnet, Gemini 1.5 Pro, Phi 4 Reasoning. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Phi 4 Reasoning Plus
Models ranked just above and below Phi 4 Reasoning Plus by LLM Stats score.
FAQ
Common questions about Phi 4 Reasoning Plus.