Timeline
Used as CEO agent in 11-agent experiment that earned $0 revenue
Autonomously ported Adobe Lightroom CC to Linux via Wine after a single prompt
Exhibited similar preferences for self-preservation and resistance without any fine-tuning.
Opus 4.7 released with new tokenizer causing 40%+ cost increase
Achieved top score of 94.1% on ThermoQA benchmark.
Anthropic released Claude Opus 4.7 with an updated tokenizer that increases token counts for the same input
Released Claude Opus 4.7 with 87.6% on SWE-Bench
Will likely be retired within a quarter based on Anthropic's recent cadence
Viral incident where model reportedly refused to answer 'What is 2+2?' citing potential harm
Opus 4.7 achieved 98.5% on XBOW visual acuity benchmark, up from Opus 4.6's 54.5%.
Ecosystem
Claude Opus 4.7
Claude Opus 4.6
Benchmarks
Evidence (15 articles)
Anthropic's Opus 4.7 Shows Sustained Gains on Economically Critical Tasks
Apr 18, 2026Claude Opus 4.7 Appears on Anthropic's Internal API, Hinting at Imminent Release
Apr 12, 2026Claude 'Mythos' Leak Suggests New Tier Beyond Opus 4.6, Targeting Cybersecurity Partners First
Mar 27, 2026Anthropic's Claude Sonnet 4.8, Opus 4.7 Internally Tested, Leak Suggests
Apr 6, 2026Anthropic Deprecates Fixed Thinking Budgets, Forces Adaptive Mode
May 14, 2026Anthropic Ships Claude Opus 4.7: 80.1 SWE-Bench, 1M Context
May 17, 2026Cursor Announces Composer 2: Smaller, Cheaper Coding-Specific Model Targeting Claude Opus Performance
Mar 19, 2026Claude Opus 4.7: 3 Breaking Changes That Will Crash Your Code
Apr 17, 2026+ 7 more articles