Artificial intelligence · 2025

Claude 4

Claude Opus 4 and Sonnet 4 work autonomously on coding tasks for hours.

Released May 22, 2025, Claude Opus 4 and Sonnet 4 scored 72.5% and 72.7% on SWE-bench Verified. Anthropic deployed Opus 4 under its ASL-3 safeguards, the first model released at that protection level.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

Claude 3.7 Sonnet 2025
Claude Code 2025

What it led to 1

Claude Sonnet 4.5 2025

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)