Opus 4.8’s Default 1M Context Window Is the Upgrade I Notice Most
A few days with Opus 4.8 in Claude Code. The benchmarks went up, but the default 1M context window is what actually changed my long sessions.
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Opus 4.8 Launched, but Fast Mode Was the Real Win for Me
Anthropic shipped Opus 4.8 with higher coding scores and frozen pricing — but as someone running Claude Code all day, the 2.5x faster, 3x cheaper fast mode was what actually landed.