claude-4.5-sonnet reasoning

POST

/v1/chat/completions

Request

Authorization

API Key

Add parameter in header

Authorization

Example:

Authorization: ********************

Body Params application/json

Examples

Use budget_tokens to control maximum reasoning token lengthDisable reasoning

{
    "model": "claude-4.5-sonnet",
    "messages": [
        {
            "content": [
                {
                    "text": "What is the sun",
                    "type": "text"
                }
            ],
            "role": "user"
        }
    ],
    "thinking": {
        "type": "enabled",
        "budget_tokens": 1024 // claude-4.5-sonnet model supports a minimum of 1024, maximum value must be less than max_token
    }
}

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

cURL

Use budget_tokens to control maximum reasoning token lengthDisable reasoning

curl --location 'https://api-xmodel.nexconn.ai/v1/chat/completions' \
--header 'Authorization: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
    "model": "claude-4.5-sonnet",
    "messages": [
        {
            "content": [
                {
                    "text": "What is the sun",
                    "type": "text"
                }
            ],
            "role": "user"
        }
    ],
    "thinking": {
        "type": "enabled",
        "budget_tokens": 1024 // claude-4.5-sonnet model supports a minimum of 1024, maximum value must be less than max_token
    }
}'

Responses

🟢200Success

application/json

Bodyapplication/json

Example

{}

Modified at 2026-04-24 10:39:56

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