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Anthropic releases Claude Opus 4 and Sonnet 4 and makes Claude Code generally available

Claude Opus 4 at a glance

Claude Opus 4 led SWE-bench and Terminal-bench at launch and can work on long tasks for hours; both models can use tools during extended thinking, and Claude Code reached general availability.

What changed with Claude Opus 4

On May 22, 2025, Anthropic released Claude Opus 4 and Claude Sonnet 4, hybrid models with near-instant answers and extended thinking. Anthropic called Opus 4 the best coding model in the world, citing 72.5% on SWE-bench and 43.2% on Terminal-bench, and said it can keep working on long agent tasks for several hours. Sonnet 4 reported 72.7% on SWE-bench.

Both models can use tools such as web search during extended thinking, call tools in parallel, and keep memory files when given local file access. Pricing stayed at $15/$75 per million input/output tokens for Opus 4 and $3/$15 for Sonnet 4, on the Anthropic API, Amazon Bedrock and Google Cloud Vertex AI. Claude Code became generally available with VS Code and JetBrains extensions, GitHub Actions support and a Claude Code SDK.

Claude Opus 4 benchmarks and pricing

Values are copied from the linked source on the date shown. They are not IA Compa measurements.

Input price per 1M tokensas of · Source for Input price per 1M tokens: anthropic.com (opens in a new tab)
$15.00
Output price per 1M tokensas of · Source for Output price per 1M tokens: anthropic.com (opens in a new tab)
$75.00
Input price per 1M tokens · Claude Sonnet 4as of · Source for Input price per 1M tokens: anthropic.com (opens in a new tab)
$3.00
Output price per 1M tokens · Claude Sonnet 4as of · Source for Output price per 1M tokens: anthropic.com (opens in a new tab)
$15.00

How it compares

Other models in the same category that we have covered, using each model's latest recorded value. (Models)

Input price (USD per 1M tokens) · Claude Opus 4lower is better
Input price (USD per 1M tokens) · Claude Sonnet 4lower is better
Output price (USD per 1M tokens) · Claude Opus 4lower is better
Output price (USD per 1M tokens) · Claude Sonnet 4lower is better

Where to compare Claude Opus 4

Independent leaderboards and official resources for comparing this model yourself. Rankings change often; each site shows its own current data.

Why Claude Opus 4 matters for businesses

For businesses, Claude 4 made long-running coding and research agents practical: a model that plans, uses tools and remembers context over hours can take on real project work, while Sonnet 4 kept that capability at a mid-tier price.

Sources for this story

  1. Official
  2. Claude 4 Opus model page (opens in a new tab)

    Artificial Analysis · artificialanalysis.ai

    Benchmark

Last verified: . IA Compa summarizes public announcements for business readers. We are not affiliated with the companies mentioned. Always confirm details, pricing, and availability with the official source.

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