Claude Opus 5.5
Claude Opus 5.5 is a text and image-input model by Anthropic, available through the AgentSky API as anthropic/claude-opus-5-5 at $2.80 per million input tokens and $14.00 per million output tokens, with a 1M context window.
Anthropic's flagship model for complex agentic coding and long-horizon professional work.
Run Claude Opus 5.5 with an agent
Each guide pairs this model with a compatible agent and opens the composer with both selected.
Pricing
USD per million tokens, using your plan when signed in.
| Meter | Per 1M tokens |
|---|---|
| Input | |
| Output | |
| Cache read | |
| Cache write |
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-opus-5-5",
max_tokens: 256,
messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(message.usage.cost); // USD, in the response