Claude Sonnet 4.6
anthropic/claude-sonnet-4-6The previous Sonnet generation for general coding and assistant workloads, superseded by Sonnet 5.
This model is available through the API. It is not currently offered as an agent's reasoning model.
Use through the APIOfficial price: $3.00Sale price: $2.10Official price: $15.00Sale price: $10.5030% off- Text, Image
- 1M
- Feb 17, 2026
Overview
The previous Sonnet generation for general coding and assistant workloads, superseded by Sonnet 5. It is billed from the same balance as every other model and tool here, and the price of each call comes back in the response.
Pricing
30% offPrices in USD per million tokens, using your plan when signed in.
| Meter | Per 1M tokens |
|---|---|
| Input | |
| Output | |
| Cache read | |
| Cache write |
Your balance and per-call records come from /v1/credits and /v1/generation.
Use it
Point your client at the gateway and pass this model id. Nothing else changes.
import Anthropic from "@anthropic-ai/sdk";
const client = new Anthropic({
baseURL: "https://gateway.agentsky.dev",
apiKey: process.env.AGENTSKY_API_KEY, // ast_…
});
const message = await client.messages.create({
model: "anthropic/claude-sonnet-4-6",
max_tokens: 256,
messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(message.usage.cost); // USD, in the response