bitsandbytes2 slightly delayed: zero-config lazy compression plus dynamic expert swaps for near-infinite KV cache

Tim_Dettmers · x · 2026-09-22

bitsandbytes2 was set to release this week but is slightly delayed. It offers "lazy compression" — no user configuration, always a perfect memory-quality-speed trade-off, even as the KV cache grows. Combined with another technique releasing tomorrow, it enables virtually infinite KV cache. bnb2 targets small companies and individuals deploying large open-weight models on limited-memory hardware; private beta signups are open.

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