Microsoft model product
Phi 4 Reasoning
Phi-4-reasoning is a state-of-the-art open-weight reasoning model finetuned from Phi-4 using supervised fine-tuning on a dataset of chain-of-thought traces and reinforcement learning.
Updated Aug 12, 2026. Default version: Phi 4 Reasoning
LLMBoard score22.0Phi 4 Reasoning
Coverage100%9 benchmark families
Context windowN/ATokens
Official input price$0.125Azure API
Phi 4 Reasoning Specifications
Technical details for the model's default version.
- Version
- Phi 4 Reasoning
- Released
- Apr 30, 2025
- Knowledge cutoff
- Mar 1, 2025
- Parameters
- 14B
- Context window
- N/A
- Max output
- N/A
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- MIT
Phi 4 Reasoning Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Phi 4 Reasoning Benchmark Results
Benchmark scores for Phi 4 Reasoning.
| HumanEval+ | 92.9% | 01 | 10 | 100.0% | C | |
| FlenQA | 97.7% | 02 | 2 | 0.0% | C | |
| OmniMath | 76.6% | 02 | 2 | 0.0% | C | |
| PhiBench | 70.6% | 02 | 3 | 50.0% | C | |
| Arena Hard | 73.3% | 10 | 26 | 64.0% | C | |
| AIME 2024 | 75.3% | 34 | 53 | 36.5% | C | |
| LiveCodeBench | 53.8% | 39 | 73 | 47.2% | C | |
| IFEval | 83.4% | 45 | 65 | 31.3% | C | |
| MMLU-Pro | 74.3% | 74 | 129 | 43.0% | C | |
| AIME 2025 | 62.9% | 95 | 114 | 16.8% | C | |
| GPQA | 65.8% | 146 | 234 | 37.8% | C |
Phi 4 Reasoning Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
Phi 4 Reasoning Runtime Performance
Provider-specific output speed and catalog latency for Phi 4 Reasoning. Runtime does not affect the capability score.
No runtime data
Browse runtime rankingsNo provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Phi 4 Reasoning Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $0.125 input, $0.50 output per 1M
- Official provider
- Azure
- Lowest third-party
- From $0.125 input, $0.50 output per 1M via Azure Cognitive Services
- Tracked offerings
- 2
| Azure Cognitive Services | phi-4-reasoning | global | $0.125 | $0.50 | 32K | |
| Azure | phi-4-reasoning | global | $0.125 | $0.50 | 32K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Phi 4 Reasoning Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Phi 4 Reasoning | 22.0 | 14B | N/A | N/A | No | MIT |
What is Phi 4 Reasoning?
Key information about Phi 4 Reasoning and its available data.
Phi-4-reasoning is a state-of-the-art open-weight reasoning model finetuned from Phi-4 using supervised fine-tuning on a dataset of chain-of-thought traces and reinforcement learning. It focuses on math, science, and coding skills.
Data as of 2026-08-11.
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FAQ
Common questions about Phi 4 Reasoning.
When was Phi 4 Reasoning released?
Phi 4 Reasoning's default version was released on Apr 30, 2025.
How much does Phi 4 Reasoning cost?
Phi 4 Reasoning's official API price is $0.125 per million input tokens and $0.50 per million output tokens via Azure. The lowest tracked third-party offer starts at $0.125 input and $0.50 output via Azure Cognitive Services.
Who created Phi 4 Reasoning?
Phi 4 Reasoning was created by Microsoft.
What is the context window for Phi 4 Reasoning?
A context window is not available for the default version.
Is Phi 4 Reasoning open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Phi 4 Reasoning?
2 provider offerings are linked to the default version.
What models should I compare Phi 4 Reasoning with?
Nearby ranked alternatives include Qwen2.5 VL 72B, MiniCPM SALA, Llama 3.3 70B.