MAX Nightly 26.4.0.dev2026052806 (Mojo 1.0.0b2.dev2026052806) Released

Nightly
1

:astronaut: A new nightly version has been released! :astronaut:

See the quickstart guide for installation instructions: Quickstart | Modular

MAX changelog updates:

  • Fixed an expert-parallelism dispatch assertion (Cannot dispatch EP kernel with N input tokens when the maximum tokens per rank is N-1)
    that fired whenever --max-batch-input-tokens was not evenly
    divisible by the tensor-parallel degree. The EP per-rank cap now uses
    ceiling division to match the ragged binning of reducescatter in
    TP-attention + EP-MoE mode, so the largest shard fits in the
    dispatch buffer. Affects DeepSeek-V3, Kimi-K2.5, MiniMax-M2, Qwen3,
    and Step3.5 deployments configured with non-divisible batch sizes.

Mojo changelog updates:

  • [stdlib] Drop ImplicitlyDestructible from ImplicitlyCopyable trait
  • [mojo] Print decls in diags with unreadable locs

Raw MAX diff: https://github.com/modular/modular/compare/29a2f54c7b44e5548a5827a76528fb2bf73c9888...2fc2023f9f524ce031df72e92b195669f41033c1)>
Current Mojo changelog: https://github.com/modular/modular/blob/main/mojo/docs/nightly-changelog.md