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Support free-threaded Python (cp314t) wheels

Status: Open.

#1981 In bitsandbytes-foundation/bitsandbytes;

· leveretconey opened on Jun 25, 2026

Add Muon optimizer with 8-bit quantized momentum (bnb.optim.Muon8bit)

Status: Open.

#1973 In bitsandbytes-foundation/bitsandbytes;

· theblackcat102 opened on Jun 14, 2026

[ROCm] gfx1201 (Navi 48) support - compilation guide and known issues

Status: Open.

#1955 In bitsandbytes-foundation/bitsandbytes;

· UFO0506 opened on May 25, 2026

8bit Schedule-Free Optimizer

OptimizersIssues or feature requests relating to optimizersIssues or feature requests relating to optimizers

Status: Open.

Feature

#1950 In bitsandbytes-foundation/bitsandbytes;

· idunafu opened on May 21, 2026

Linear4bit._save_to_state_dict writes QuantState keys but no _load_from_state_dict consumes them (asymmetric serialization)

Status: Open.

#1946 In bitsandbytes-foundation/bitsandbytes;

· neil-the-nowledgeable opened on May 11, 2026

FSDP2 fully_shard breaks Linear4bit forward via NaN canonicalization of packed-NF4 bf16 storage

Status: Open.

#1945 In bitsandbytes-foundation/bitsandbytes;

· neil-the-nowledgeable opened on May 11, 2026

[sm_87] Multi-shape Linear4bit sequence reboots Jetson Orin Nano Super (system reboot, not OOM)

aarch64

CUDAIssues and PRs related to the CUDA backend, excluding installation/support help.Issues and PRs related to the CUDA backend, excluding installation/support help.

Status: Open.

#1936 In bitsandbytes-foundation/bitsandbytes;

· neil-the-nowledgeable opened on May 4, 2026

aarch64 prebuilt wheels do not include sm_87 — Jetson Orin devices fail at first CUDA kernel launch

aarch64

CUDAIssues and PRs related to the CUDA backend, excluding installation/support help.Issues and PRs related to the CUDA backend, excluding installation/support help.

Status: Open.

#1930 In bitsandbytes-foundation/bitsandbytes;

· neil-the-nowledgeable opened on Apr 22, 2026

INT8 + Gradient Checkpointing: CB/SCB state machine breaks on GC recompute (+ meta-device SCB AttributeError)

Status: Open.

#1927 In bitsandbytes-foundation/bitsandbytes;

· sirfyyn opened on Apr 16, 2026

Question: intentional FP16-only path for int8_vectorwise_quant / LLM.int8 activation quant? (BF16 support + removing casts)

Status: Open.

Feature

#1868 In bitsandbytes-foundation/bitsandbytes;

· sanghyunna opened on Feb 16, 2026

Default LLM.int8() mixed-precision decomposition causes 17-147% energy overhead across consumer and datacenter GPUs

Status: Open.

#1867 In bitsandbytes-foundation/bitsandbytes;

· hongping-zh opened on Feb 15, 2026

[Performance/Energy] 4-bit NF4 shows significant energy efficiency penalty on Blackwell (RTX 5090) for small models

Status: Open.

#1851 In bitsandbytes-foundation/bitsandbytes;

· hongping-zh opened on Jan 29, 2026