GPT 5.3 Codex Benchmarks (Explained) GPT 5.3 Codex launched on February 5, 2026, featuring a record 77.3% Terminal-Bench score and a first-of-its-kind "High" cybersecurity rating.
Claude Opus 4.6 Benchmarks: A New Standard for Agents Claude Opus 4.6 launched on February 5, 2026, delivering a massive 83% leap in reasoning and a 1 million token window for autonomous agent teams.
