q8_0 fails at 16K/30%, 8K/100%, 16K/100%.
turbo4 fails at 4K/0%, 8K/100%.
Shared failure at 8K/100% = model weakness, not quantization.
turbo4 has better retrieval than q8_0 baseline.
Co-Authored-By: tturney@psyguard.ai
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>