Phi-4-reasoning-plus (free)
microsoft/
Microsoft model · Served by DeepInfra · live on the gateway · :free available
Pricing
About Phi-4-reasoning-plus (free)
Reasoning model for deliberate analysis, multi-step problem solving, and tool use
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "microsoft/phi-4-reasoning-plus:free",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call Phi-4-reasoning-plus (free) through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to microsoft/phi-4-reasoning-plus:free. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of Phi-4-reasoning-plus (free)?
Phi-4-reasoning-plus (free) has a context window of 32,000 tokens on Rapid Router, and returns up to 4,096 output tokens per reply.
Is there a free version of Phi-4-reasoning-plus (free)?
Yes. Call microsoft/phi-4-reasoning-plus:free:free and the request is paid for from Rapid Router's sponsored daily pool, within the free tier's daily request limit.
What can Phi-4-reasoning-plus (free) do?
On Rapid Router, Phi-4-reasoning-plus (free) supports extended reasoning.