Phi-4 Reasoning
Phi-4 Reasoning is Microsoft's language model with a 33K context window and up to 4K output tokens, starting at $0.125 / 1M input and $0.500 / 1M output. A reasoning-focused variant of Phi-4 designed for multi-step logical inference and complex problem-solving tasks in a small model footprint.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Output $ / 1M | |
 Azure AI Foundry | $0.125 | $0.500 |
Cost Calculator
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Phi-4 Mini Instruct | 131K | $0.075 | $0.300 | Available | |
| Phi-4 | 16K | $0.065 | $0.140 | Available | |
| Phi-4 Reasoning | — | 33K | $0.125 | $0.500 | Current |
| Phi-4 Multimodal | — | — | — | — | Available |
| Phi-4 Mini | — | — | — | — | Available |
| Phi-4 Eagle | — | — | — | — | Available |
| Phi-4 Mini MM | — | — | — | — | Available |
| Phi-4 Mini Reasoning | — | 131K | $0.080 | $0.320 | Available |
| Phi-4 Multimodal Instruct | — | 131K | $0.080 | $0.320 | Available |
| Phi-4 Reasoning Plus | — | — | — | — | Available |
| Phi-3 Mini | — | — | — | — | Available |