Anthropic·Claude Opus family

Claude Opus 5

proprietaryReleased Jul 2026

Anthropic's new state-of-the-art model, a thoughtful and proactive successor to Opus 4.8 that approaches Claude Fable 5's frontier intelligence at half the price. Delivers major gains in coding, agentic workflows, computer use, knowledge work, and scientific research, with strong self-verification and iteration, configurable effort settings, and Anthropic's best alignment and safety results to date. Also available in a Fast mode that runs around 2.5x the default speed.

Capabilities

ChatText completionFunction callingVisionCode generationReasoning

Modalities

textimagecode

Context window

300K tokens

Providers

Available

Available from 1 provider

Cheapest

Anthropic

$30.00/1M tokens

Fastest

Anthropic

534ms TTFT

Anthropic

Provider (1)

Sorted by total cost (input + output per 1M tokens). Select a row to view provider details.

Provider	Pricing (per 1M)	Rate limits	Regions	Health	Latency
Anthropic	In: $5.00Out: $25.00	50 RPM / 80K TPM	us-east-1eu-west-1	Healthy	534ms

Quick start

Use this model via Anthropic with an OpenAI-compatible SDK.

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.anthropic.com/v1",
  apiKey: process.env.ANTHROPIC_API_KEY,
});

const response = await client.chat.completions.create({
  model: "claude-opus-5",
  messages: [
    { role: "user", content: "Hello!" }
  ],
});

console.log(response.choices[0].message.content);

Using Anthropic API · OpenAI-compatible SDK