Microsoft Azure

Phi 4

Name: Phi 4
Brand: Microsoft Azure
Price: 0.07 USD
Availability: InStock

Phi 4 is a large language model by Microsoft Azure with support for function calling. It supports a 16K token context window with up to 16K tokens of output. Priced at $0.07 per million input tokens and $0.14 per million output tokens, it is one of the most cost-efficient options in its class. Access Phi 4 through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

→Function Calling

Use This Model

Step 1 — Create Router

curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "name": "compare-frontier-models",
  "defaultRoute": {
    "route_id": "default",
    "variants": [
      {
        "variant": {
          "variant_id": "deepinfra/phi-4-a",
          "model_id": "deepinfra/phi-4"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "deepinfra/phi-4-b",
          "model_id": "deepinfra/phi-4"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "deepinfra/phi-4-c",
          "model_id": "deepinfra/phi-4"
        },
        "weight": 34
      }
    ]
  }
}'

import requests

response = requests.post(
    "https://api.inworld.ai/router/v1/routers",
    headers={
        "Authorization": "Basic <your-api-key>",
        "Content-Type": "application/json",
    },
    json={
        "name": "compare-frontier-models",
        "defaultRoute": {
            "route_id": "default",
            "variants": [
                {
                    "variant": {
                        "variant_id": "deepinfra/phi-4-a",
                        "model_id": "deepinfra/phi-4"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "deepinfra/phi-4-b",
                        "model_id": "deepinfra/phi-4"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "deepinfra/phi-4-c",
                        "model_id": "deepinfra/phi-4"
                    },
                    "weight": 34
                }
            ]
        }
    },
)
print(response.json())

const response = await fetch(
  "https://api.inworld.ai/router/v1/routers",
  {
    method: "POST",
    headers: {
      Authorization: "Basic <your-api-key>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      name: "compare-frontier-models",
      defaultRoute: {
        route_id: "default",
        variants: [
          {
            variant: {
              variant_id: "deepinfra/phi-4-a",
              model_id: "deepinfra/phi-4",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "deepinfra/phi-4-b",
              model_id: "deepinfra/phi-4",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "deepinfra/phi-4-c",
              model_id: "deepinfra/phi-4",
            },
            weight: 34,
          },
        ],
      },
    }),
  }
);
const data = await response.json();
console.log(data);

Step 2 — Chat Completion

curl --location 'https://api.inworld.ai/v1/chat/completions' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "model": "inworld/compare-frontier-models",
  "messages": [{"role": "user", "content": "Hello!"}]
}'

Phi 4 pricing and providers

Access Phi 4 through DeepInfra via Inworld Router or Realtime API. By using the AI provider(s) below you acknowledge you reviewed and agree to their terms listed in the Legal section under the AI provider's name.