Organization

MIT HAN Lab

lab

Openness profile

1 product on the map — 1 open.

Block Sparse Attention

Openness

5 high confidence

5.0

license: BSD-3-Clause(OSI)
source: public
core-gated: ungated

BSD-3-Clause license body confirmed. The repository is public and unarchived and builds the whole product, and the README describes no paid tier, enterprise edition or license-gated build beside it, so source is public and the core ungated.

https://github.com/mit-han-lab/Block-Sparse-Attention/blob/main/LICENSE recorded 2026-09-02
LICENSE body is the verbatim three-clause BSD text, inherited from its FlashAttention base.
https://api.github.com/repos/mit-han-lab/Block-Sparse-Attention recorded 2026-09-02
Repo metadata for block-sparse-attention's canonical repository - private false, archived false, fork false.
https://github.com/mit-han-lab/Block-Sparse-Attention/blob/main/README.md recorded 2026-09-02
README describes Block Sparse Attention as a library of sparse attention kernels supporting streaming and block-sparse patterns, initially modified from FlashAttention 2.4.2, with no paid tier, enterprise edition or license-gated build beside the published source.