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Half of Opus’s input and output rates does not mean half the bill. A practical pilot for support and development, with cache costs and Messages API changes.

V4.1 Flash changes aliases and pricing. Current documentation keeps V4 Pro available despite the original announcement. Cache usage, queues and timing still determine workflow cost.

Gemini 3.8 Flash is GA with 1M context, controllable thinking, and introductory pricing of $0.75 / $3.75. The real change is not another leaderboard: it is a lower-cost main worker for long agent workflows, provided you control tokens, caching, and validation.

GLM-5.3-Flash combines public MIT weights, native vision, a 1M-token context window, and much lower API pricing. For companies, it is a credible primary-worker candidate for verifiable coding, document, and multimodal workflows.

Meta has opened Muse Spark 1.1 through a paid Model API. The important part is not the benchmark story, but the combination of aggressive pricing, agentic positioning, custom chips, and possible cloud infrastructure.