Anthropic released Claude Opus 5.5, the first model in the Claude 5.5 series, with performance comparable to Fable 5.1 but 40% cheaper than Opus 5. The model excels at code migration (680k lines in one day), web optimization, and coding assistance. It requires fewer compute resources while maintaining strong safety benchmarks, and is available today across all platforms including major cloud providers. Lower costs translate to higher usage quotas for Claude Pro/Max/Team/Enterprise customers.