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Anthropic launches Claude Opus 4.8 and new effort selector

Anthropic released Claude Opus 4.8 globally at the same price as 4.7, with gains in coding, reasoning, agentic work, and reliability. Fast mode is 2.5x faster at one-third the prior cost, with new effort control and workflow tools.

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TestingCatalog AI News Anthropic launches Claude Opus 4.8 and new effort selector What's new? Anthropic released Claude Opus 4.8 with coding, reasoning, agentic skill upgrades, and self-checks; Fast mode runs 2.5x faster at one-third cost; New effort control on Claude and parallel workflows in Claude Code.
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