Anthropic just dropped the best coding model, Opus 4.5! — #1 in coding (SWE-Bench) and novel problem solving (ARC-AGI-1+2) — 3x cheaper than previous 4.1, 2x more than Gemini 3: $5/M in, $25/M out — Available on AWS, GCP and Azure. The coolest thing is it does BETTER at SWE-Bench without thinking than with 64K reasoning tokens: super token-efficient model!