Anthropic’s Claude Opus 5.5, released September 22, 2026, established a 54.6% no-tools baseline on the newly refined 1,000-question HLE-Diamond benchmark while trailing OpenAI’s GPT-6 Astra at 59.9%. Competitive pressure from leading models at Google and OpenAI, combined with Anthropic’s rapid cadence of major Opus updates and October reports of unconfirmed newer checkpoints routing through Opus 5.5, drives expectations that the next 5.6+ version will debut with measurable gains in expert reasoning and adaptive capabilities. Traders watch for official announcements or expanded tool-use results that could shift the leaderboard before year-end.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

Beware of external links.
Beware of external links.
Frequently Asked Questions