# Tmax 4B

Tmax 4B is a model from Ai2 with open weights, first recorded on 1 Nov 2026; its release date is not established.

- Developer: Ai2
- Id: allenai/tmax-4b
- Sighting: 2026-11-01T18:24:27.355Z
  - [evidence link](https://huggingface.co/allenai/tmax-4b)
- Status: Released
- Weights version: 2026-06-17
  - [evidence link](https://huggingface.co/api/models/allenai/tmax-4b/paths-info/c733e09b808d837ae7450eccc8cb8dace07316d6)
- Canonical: https://alexgetman.com/models/ai2/tmax-4b/

## Questions

### Are the weights of Tmax 4B publicly available?

Yes. Ai2 publishes the weights.

### When was Tmax 4B released?

Its release date is not established. Signal Forge first recorded it on 1 Nov 2026.

## Evidence links

- [huggingface:allenai](https://huggingface.co/allenai/tmax-4b)
- [hf-author-artifacts:allenai](https://huggingface.co/api/models/allenai/tmax-4b/paths-info/c733e09b808d837ae7450eccc8cb8dace07316d6)

## Signals