Model

Claude Opus 4.7

by Anthropic

Family

Claude 4 / Opus

Context window

1,000,000 tokens

Open weights

Release date

2026-04-16

Benchmark notes

Introduced 'Effort Control' layer for self-correction and xhigh reasoning mode. Reported 87.6% on SWE-Bench Verified by third parties. Uses a newer tokenizer compared to earlier Opus models. Fast mode deprecated as of July 24, 2026. Priced at $5/$25 per million input/output tokens.