Identity
- Status
- active
- Developer ID
microsoft/Phi-4-reasoning- Released
- Apr 30, 2025
- Version
- Phi-4-reasoning
- License
- mit
MicrosoftPhi-4 Reasoning
Phi-4-reasoning is an open-weight language model published by Microsoft.
- Token context
- 33K tokens
- Inputs
- Text
- Outputs
- Text
- Released
- Apr 30, 2025
Providers & Pricing
0 current hosted offerings
No Current Hosted API Offering Verified
No exact current provider endpoint or published price has been verified for this model version.
At a Glance
Model Facts
Capacity
- Token context
- 33K tokens
- Maximum output
- Unknown
- Total parameters
- 14.7B
- Active parameters
- Unknown
- Knowledge cutoff
- Not reported
Interface and Access
- Inputs
- Text
- Outputs
- Text
- API available
- Unknown
- Open weights
- Yes
- Self-hostable
- Yes
- Reasoning
- Yes
- Vision
- No
- Tool calling
- No
- Capabilities
- chat, generation, reasoning
This page represents one developer model product. Dated API snapshots, serving endpoints, pricing, regions, quantizations, and service tiers attach as versioned aliases or provider details and never create duplicate public model records.
Version Lineage
PredecessorUnknown
SuccessorsUnknown
Aliasesmicrosoft/Phi-4-reasoning, microsoft/Phi-4-reasoning
Explicit Unknowns
- Maximum output
- Knowledge cutoff
- API availability
- Provider pricing
Primary Evidence
Sources and Observation Date
microsoft/Phi-4-reasoning developer model repositoryMicrosoft · observed Aug 28, 2026microsoft/Phi-4-reasoning config.json at 1de18ec97600Microsoft · observed Aug 28, 2026microsoft/Phi-4-reasoning README.md at 1de18ec97600Microsoft · observed Aug 28, 2026microsoft/Phi-4-reasoning immutable Hub API metadataMicrosoft · observed Aug 28, 2026microsoft/Phi-4-reasoning tokenizer_config.json at 1de18ec97600Microsoft · observed Aug 28, 2026Hugging Face catalogHugging Face · observed Sep 2, 2026
Comparable Peers
Related Model Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Phi-4 ReasoningMicrosoft | vs |  Bolmo 7BAi2 | cross-developer peerstext |
Phi-4 ReasoningMicrosoft | vs | cross-developer peerstext | |
Phi-4 ReasoningMicrosoft | vs | cross-developer peerstext | |
Phi-4 ReasoningMicrosoft | vs |  DeepSeek R1DeepSeek | cross-developer peerstext |
Phi-4 ReasoningMicrosoft | vs | DeepSeek V3.2DeepSeek | cross-developer peerstext |
Phi-4 ReasoningMicrosoft | vs | phi-4Microsoft | family variantstext |
Phi-4 ReasoningMicrosoft | vs | Phi-4 Mini InstructMicrosoft | family variantstext |
Phi-4 ReasoningMicrosoft | vs | Phi-4 Mini ReasoningMicrosoft | family variantstext |
Phi-4 ReasoningMicrosoft | vs | Phi-4 Multimodal InstructMicrosoft | family variantstext |
Phi-4 ReasoningMicrosoft | vs |  Codestral 22B v0.1Mistral AI | cross-developer peerstext |
Phi-4 ReasoningMicrosoft | vs |  gpt-oss-120bOpenAI | cross-developer peerstext |
Phi-4 ReasoningMicrosoft | vs | gpt-oss-20bOpenAI | cross-developer peerstext |
Questions
Phi-4 Reasoning FAQs
What is Phi-4 Reasoning?+
Phi-4-reasoning is an open-weight language model published by Microsoft. It is developed by Microsoft and its current sourced lifecycle status is active.
What inputs and outputs does Phi-4 Reasoning support?+
Phi-4 Reasoning's current record lists Text as input and Text as output.
How much context does Phi-4 Reasoning support?+
The current record lists a 33K-token context window and does not report a maximum output length.
Is Phi-4 Reasoning available through an API?+
Phi-4 Reasoning's current primary-source record does not establish API availability. No provider endpoint is treated as available without direct provider evidence.
How large is Phi-4 Reasoning?+
The current record lists 14.7B total parameters and an unknown active parameter count. Its architecture is Phi3ForCausalLM.
What capabilities and tasks does Phi-4 Reasoning support?+
Phi-4 Reasoning's recorded capabilities are chat, generation, and reasoning. Its supported tasks are text.
How much does Phi-4 Reasoning cost through an API?+
No directly sourced token price is currently attached to Phi-4 Reasoning. Missing prices remain unknown rather than being inferred from another model or provider.
Can Phi-4 Reasoning be self-hosted?+
Phi-4 Reasoning is an open-weight model. Self-hosting is supported, and the recorded license is mit.
Does Phi-4 Reasoning have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are microsoft/Phi-4-reasoning.
Which models can Phi-4 Reasoning be compared with?+
The current compatible peer set includes Bolmo 7B, Olmo 3 32B Think, Olmo 3 7B Think, DeepSeek R1, and DeepSeek V3.2. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →