Claude Sonnet

const sonnet: sh.stellarium.inference.claude.Sonnet

Calls are served by Claude Sonnet 5.5 (claude-sonnet-5-5) through the Anthropic API.

message

Sends a single user message to the model and returns its text reply. This is a paid inference function.

string

required

The prompt to generate text from.

int32

required

The maximum number of tokens to generate. Also sets the output side of the price ceiling your node signs for.

string

The model’s reply. If the reply has several text blocks, they’re joined together.

request ClaudeRequest {
  const sonnet: sh.stellarium.inference.claude.Sonnet

  const response = sonnet.message(prompt: "Hello, what is your name?", maxTokens: 2000)

  if (response.error != null) {
    return response.error.message
  }

  return response.value
}

Response

{ "returnValue": "Hi! I'm Claude, an AI assistant made by Anthropic." }

Pricing

	Price per million tokens	Micro-USDC per million tokens
Input	$2.50	`2,500,000`
Output	$10.50	`10,500,000`

Input tokens are estimated before the call with Anthropic’s token-counting API, and the final charge uses the token counts Anthropic reports for the call. For a 1,000-token prompt with maxTokens: 400:

	Input	Output	Charge
Signed ceiling	1,000 × 2.5	400 × 10.5	6,700 micro-USDC ($0.0067)
Actual call, 250 output tokens	1,000 × 2.5	250 × 10.5	5,125 micro-USDC ($0.005125)

See What a call costs for how charges are calculated.

Each call is a single-turn conversation with no system prompt. To carry context between calls, include it in prompt.

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message

Pricing

​message

​Pricing

message

Pricing