Ai2 (Allen Institute for AI)MolmoWeb
MolmoWeb 4B
MolmoWeb 4B is a visual web-agent model.
What the release provides
The release uses the Molmo2 architecture and provides datasets and evaluation code. Ai2 corrected its Transformers-compatible checkpoint on March 29, 2026. The model card asks users of earlier downloads to obtain the corrected weights. Apache 2.0 applies.MolmoWeb 4B official model card
How to use it well
Practical guidance. Pin the corrected revision in the browser agent. Separate the model's proposed action from the browser's actual result, and stop when the page state no longer matches the expected target.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | Downloadable |
| Model identifiers | allenai/MolmoWeb-4B |