⌘K

Claude Sonnet 5.5

claude-sonnet-5-5

Claude Sonnet 5.5 is a Sonnet model offering a strong balance of speed and intelligence for advanced reasoning, coding, agents, and multimodal understanding. It supports text and image input, text output, a 1,000,000 token context window, and 128,000 max output tokens through the OpenAI-compatible chat completions endpoint.

Authentication

authorization `string` required

All APIs require authentication via Bearer Token.

Get API Key:

Visit API Key Management Page to get your API Key.

Usage:

Add to request header:

Authorization: Bearer YOUR_API_KEY

Parameters

model `string` required

Model ID to use for the request

Value: claude-sonnet-5-5

messages `array` required

Array of message objects representing the conversation history

role string required

Message role

Options: user, assistant, system, developer

content string | array required

Text string or multimodal array

max_tokens `integer`

Maximum tokens to generate in the completion

Range: 1 - 128000

temperature `number`

Sampling temperature to use

Default: 1.0

Range: 0.0 - 2.0

top_p `number`

Nucleus sampling parameter

Default: 1.0

Range: 0.0 - 1.0

stream `boolean`

Whether to stream response incrementally

Default: false

Code Examples

curl --location 'https://cloud.vtrix.ai/llm/chat/completions' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
  "model": "claude-sonnet-5-5",
  "messages": [{"role": "user", "content": "Hello!"}]
}'

curl --location 'https://cloud.vtrix.ai/llm/chat/completions' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
  "model": "claude-sonnet-5-5",
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "text",
          "text": "Describe this image."
        },
        {
          "type": "image_url",
          "image_url": {
            "url": "https://example.com/your-image.jpg"
          }
        }
      ]
    }
  ],
  "max_tokens": 4096,
  "temperature": 0.7,
  "stream": false
}'

Response Format

{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "created": 1699896916,
  "model": "claude-sonnet-5-5",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello! How can I help you today?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 10,
    "completion_tokens": 20,
    "total_tokens": 30
  }
}

Claude Sonnet 5.5

Authentication

authorization `string` required

Parameters

model `string` required

messages `array` required

role `string` required

content `string | array` required

max_tokens `integer`

temperature `number`

top_p `number`

stream `boolean`

Authentication

authorization string required

Parameters

model string required

messages array required

role string required

content string | array required

max_tokens integer

temperature number

top_p number

stream boolean

authorization `string` required

model `string` required

messages `array` required

role `string` required

content `string | array` required

max_tokens `integer`

temperature `number`

top_p `number`

stream `boolean`