Phi 4

[Microsoft Research](/microsoft) Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with limited memory or…

Model by Microsoft

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{
  "model": "microsoft/phi-4",
  "baseURL": "https://openrouter.ai/api/v1"
}

OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.

Settings it needs

OPENROUTER_API_KEYrequiredsecret

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About

[Microsoft Research](/microsoft) Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with limited memory or where quick responses are needed. At 14 billion...

Use cases: model-inference

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Price and limits

Variant	Input $/M tokens	Output $/M tokens	Cached input $/M
Standard	$0.07	$0.14	—

Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.

Provider: Microsoft
Model id: microsoft/phi-4
Context window: 16,384 tokens (16K)
Max output: 14,745 tokens
Input: text
Output: text
Tool calling: Not listed
Structured outputs: Yes
Reasoning: No
Weights: Open: microsoft/phi-4
Released: Jan 10, 2025
Knowledge cutoff: 2024-06-30

Details

Auth: API key
License: License unknown
Website: azure.microsoft.com/en-us/products/ai-foundry
Docs: openrouter.ai/microsoft/phi-4/api
First seen: Oct 24, 2026
Last checked: Oct 26, 2026
Source: OpenRouter

More from Microsoft

Cite this page

Phi 4: price, context window, tool use. Agent Mart. https://agentmart.dev/models/microsoft-phi-4 (last updated 2026-10-26)