ANTHROPIC LAUNCHES CLAUDE OPUS 5.5, FIRST MODEL IN NEW 5.5 FAMILY
This is a dev post classified by Jev as AI dev tools (a launch), kept by the Dev Radar because it carries real work, not commentary.
ANTHROPIC LAUNCHES CLAUDE OPUS 5.5, FIRST MODEL IN NEW 5.5 FAMILY Anthropic says Opus 5.5 performs at roughly the level of Claude Fable 5.1 on most tasks, while costing 40% less to run than Opus 5 and generating output 30%+ faster. Here’s everything you need to know: Opus 5.5 is Anthropic’s new flagship model, with major gains in agentic coding, computer use and knowledge work. Pricing: input_4M tokens • Output: $20/M • Cache reads: $0.20/M, 60% cheaper than Opus 5 Benchmark highlights: • Terminal-Bench 4.0: 66.4% vs. 52.3% for Opus 5 • CursorBench 4.0: 57.8% vs. 46.6% • GDPval-AA: 1846 v
Posted by Wall St Engine (193.7k followers) 1 h ago · 123 likes · 15.7k views · view the original post on X. Kept by the Dev Radar as AI dev tools.
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