Claude Opus 5.5, Advanced Evals, and Google's Vertex AI Rebranding

Three distinct signals today: Anthropic ships Claude Opus 5.5 at 40% lower cost than its predecessor, Lenny's newsletter publishes a deep dive on advanced evals that is genuinely useful for any PM shipping AI features, and Google quietly completes a major platform rebrand that has real implications for teams building on Vertex AI.