Microsoft model product
Phi 4 Reasoning
Phi 4 Reasoning is an open-weight reasoning model from Microsoft focused on math, science, and coding.
Updated Sep 8, 2026. Default version: Phi 4 Reasoning
LLMBoard Score20.9Phi 4 Reasoning
Coverage0%9 benchmark families
Context windowN/ATokens
Official input price$0.125Azure API
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.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkHumanEval+ | Score92.90% | Rank01 | Participants10 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkFlenQA | Score97.70% | Rank02 | Participants2 | Percentile0.00% | EvidenceC | Evaluated |
| BenchmarkOmniMath | Score76.60% | Rank02 | Participants2 | Percentile0.00% | EvidenceC | Evaluated |
| BenchmarkPhiBench | Score70.60% | Rank02 | Participants3 | Percentile50.00% | EvidenceC | Evaluated |
| BenchmarkArena Hard | Score73.30% | Rank10 | Participants26 | Percentile64.00% | EvidenceC | Evaluated |
| BenchmarkAIME 2024 | Score75.30% | Rank34 | Participants53 | Percentile36.54% | EvidenceC | Evaluated |
| BenchmarkLiveCodeBench | Score53.80% | Rank41 | Participants75 | Percentile45.95% | EvidenceC | Evaluated |
| BenchmarkIFEval | Score83.40% | Rank46 | Participants68 | Percentile32.84% | EvidenceC | Evaluated |
| BenchmarkMMLU-Pro | Score74.30% | Rank80 | Participants138 | Percentile42.34% | EvidenceC | Evaluated |
| BenchmarkAIME 2025 | Score62.90% | Rank99 | Participants119 | Percentile16.95% | EvidenceC | Evaluated |
| BenchmarkGPQA | Score65.80% | Rank157 | Participants247 | Percentile36.59% | EvidenceC | Evaluated |
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 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
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderAzure Cognitive Services | Provider model IDphi-4-reasoning | Regionglobal | Input / 1M$0.125 | Output / 1M$0.50 | Context32K | Updated |
| ProviderAzure | Provider model IDphi-4-reasoning | Regionglobal | Input / 1M$0.125 | Output / 1M$0.50 | Context32K | Updated |
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 Runtime Performance
Provider-specific output speed and catalog latency for Phi 4 Reasoning. Runtime does not affect the capability score.
No runtime data
No 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 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
- Yes
- License
- MIT
Phi 4 Reasoning Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionPhi 4 Reasoning | Released | LLMBoard20.91 | Parameters14B | ContextN/A | Max outputN/A | Open weightsYes | LicenseMIT |
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What is Phi 4 Reasoning?
Key information about Phi 4 Reasoning and its available data.
Phi 4 Reasoning is an open-weight model fine-tuned from Phi-4 using supervised fine-tuning on chain-of-thought traces and reinforcement learning. It focuses on math, science, and coding skills.
Data as of 2026-09-08.
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?
Yes. The default version is marked as open weight under MIT.