Claude Opus 4.7

Published

Apr 16, 2026

Claude Opus 4.7 is an AI model developed by Anthropic (United States), first published in April 2026. It works in the language domain, on tasks such as question answering and language modeling/generation.

Epoch AI has no training-compute estimate for this model.

Access: API access. Its weights are not openly released. Epoch AI rates the confidence of this record as likely.

Full record

Organization: Anthropic
Country of organization: United States
Domain: Language
Task: Question answering, Language modeling/generation
Model accessibility: API access
Open weights: No
Epoch confidence: Likely

Benchmark results

01	WebDev Arena	Arena Score	1562.4
02	ALE Bench	Performance	1323
03	Epoch Capabilities Index	ECI Score	156.1
04	WeirdML	Accuracy	0.76
05	GSO	Score OPT@1	0.44
06	Exploitbench	Mean capability	0.28