Claude Sonnet 4.5 Released
Narrative
Updated Sonnet with improved coding and agentic capabilities. Computer use built-in. $3/$15 pricing. Faster than Opus 4.
Reality
Coding benchmarks excellent: 94.2% HumanEval. Agentic reliability 80-85%. Computer use solid. Price/performance competitive. Became go-to for development workflows.
Implication
Demonstrated mid-tier model optimization strategy. Developer mindshare significant. Pricing competitive with open alternatives. Sonnet tier became volume driver.