# Phi

> Phi, a family of models by Microsoft, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. Microsoft Research Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with…

- Canonical: https://www.anchorterminal.com/tools/microsoft-phi
- Markdown: https://www.anchorterminal.com/tools/microsoft-phi.md (~450 tokens)
- Slim: https://www.anchorterminal.com/tools/microsoft-phi.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/tools/microsoft-phi.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-04

# Phi

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by Microsoft
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: \[Microsoft Research\](/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...

## Models (1)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| Phi 4 | `microsoft/phi-4` | 2025-01 | 16k | $0.07 | $0.14 | structured output |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- JSON: https://www.anchorterminal.com/api/v1/tools/microsoft-phi.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming