d8dc9dc0ce02024c43369ef310f6bf7b8c57174f
Single-turn sessions with unique prefixes get 0% cache hit, diluting APC in benchmarks. --max-single-turn-ratio caps their fraction, boosting multi-turn density and theoretical APC. Example: --sample-ratio 0.008 --max-single-turn-ratio 0.3 Before: 9.2% multi-turn, APC=70.5% After: 70.0% multi-turn, APC=85.0%, sharing=53.3% Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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