Name: Claude Opus 5
Author: Anthropic

Claude Opus 5

Anthropic · 2026-07-24

Claude Opus 5 is Anthropic's July 2026 flagship Opus model for long-running agents, coding, and professional work, with adaptive thinking and a 1M-token context window.

Benchmark scores

Benchmark	Score
AA-Briefcase Elo	1470
AA-LCR	70.0
AA-Omniscience Index	31.3
ALE-Bench	2165
Antidote: Everyday Edition	1049
APEX-Agents	43.5
ARC-AGI-1	97.5
ARC-AGI-2	90.4
ARC-AGI-3 (Semi-Private)	30.2
Arena Code WebDev — Brand & Marketing	1672
Arena Code WebDev — Consumer Product	1651
Arena Code WebDev — Content Creation Tools	1678
Arena Code WebDev — Data & Analytics	1625
Arena Code WebDev — Gaming	1801
Arena Code WebDev — HTML	1685
Arena Code WebDev — React	1722
Arena Code WebDev — Reference-Based Design	1742
Arena Code WebDev — Simulations	1748
Arena Document (Style Controlled)	1493
Arena Image-to-WebDev	1669
Arena Text — Business, Management & Financial Ops (No Style Control)	1509
Arena Text — Chinese (No Style Control)	1608
Arena Text — Creative Writing (No Style Control)	1498
Arena Text — English (No Style Control)	1502
Arena Text — Entertainment, Sports & Media (No Style Control)	1480
Arena Text — Exclude Ties (No Style Control)	1524
Arena Text — Exclude Ties (Style Controlled)	1506
Arena Text — Expert (No Style Control)	1564
Arena Text — French (No Style Control)	1520
Arena Text — French (Style Controlled)	1508