Claude Opus 4.8 Launches with Fast Mode, High-Effort Default, and Benchmark Wins
May 28, 2026 · 634 messages · 95 active members
Opus 4.8 shipped with granular reasoning controls, a 3x cheaper fast mode, ultracode/max-thinking tiers, and benchmarks beating GPT-5.5 on engineering. @arielletolome one-shot a converting bridge page, but credits burn a…
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