Models/GPT-5

GPT-5

gpt-5

Versatile model for general-purpose tasks.

General PurposeReliableVersatile

Input¥1.80

Output¥15.00

per 1M tokens

General Purpose

Wide range of tasks

Reliable

Consistent performance

Versatile

Many use cases

Cost Effective

Good value

API Documentation

View complete API reference with all parameters and examples.

View Docs

Advanced Features

Streaming

Enable real-time streaming responses with Server-Sent Events.

{
  "model": "gpt-5",
  "stream": true,
  "messages": [...]
}

Function Calling (Tools)

Enable the model to use tools and call functions.

{
  "model": "gpt-5",
  "tools": [{
    "type": "function",
    "function": {
      "name": "get_weather",
      "description": "Get current weather for a location",
      "parameters": {
        "type": "object",
        "properties": {
          "location": {"type": "string", "description": "City name"}
        },
        "required": ["location"]
      }
    }
  }],
  "messages": [{"role": "user", "content": "What's the weather in Tokyo?"}]
}

JSON Mode

Get structured JSON responses from the model.

{
  "model": "gpt-5",
  "response_format": {"type": "json_object"},
  "messages": [{"role": "user", "content": "Extract info as JSON: John is 30 years old"}]
}

API Parameters Reference

Parameter	Type	Required	Description
model	string	Yes	Model identifier (e.g., gpt-5)
messages	array	Yes	Array of message objects with role and content
max_tokens	integer	No	Maximum tokens in the response
stream	boolean	No	Enable streaming responses (SSE)
temperature	number	No	Sampling temperature (0.0 - 2.0)
top_p	number	No	Nucleus sampling threshold (0.0 - 1.0)
tools	array	No	Function calling tools definition
response_format	object	No	Output format (e.g., json_object)

Full API Documentation

View complete API reference with streaming, thinking, and more.

View Documentation

Pricing

Input

¥1.80

per 1M tokens

Output

¥15.00

per 1M tokens

Billing: Cost = (input_tokens * input_price + output_tokens * output_price) / 1,000,000