Anthropic SDK

The Anthropic SDKs speak the Messages format. Set the base URL to https://binference.io/api: the SDK adds /v1/messages itself.

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://binference.io/api",
  apiKey: process.env.BINF_API_KEY,
});

const message = await client.messages.create({
  model: "anthropic/claude-sonnet-5.5",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Explain gas fees to a new trader." }],
});

console.log(message.content);

Good to knowCopy Anchor Link

• Model names: both anthropic/claude-sonnet-5.5 and Claude's own names like claude-sonnet-5-5 work.
• Any model: the Messages format works with non-Claude models too, such as google/gemini-3.8-flash.
• Cost: Messages answers carry token counts but no cost. Each call's charge is on your Calls page within a minute.
• Overloaded: a busy model answers 529 overloaded_error, which the SDK retries after the wait we name.