# Llama 3.1 Tulu 3 405B

Llama 3.1 Tulu 3 405B is a model from Ai2 with open weights, first recorded on 11 Nov 2026; its release date is not established.

- Developer: Ai2
- Id: allenai/Llama-3.1-Tulu-3-405B
- Sighting: 2026-11-11T20:41:37.034Z
  - [evidence link](https://huggingface.co/allenai/Llama-3.1-Tulu-3-405B)
- Status: Released
- Weights version: 2025-01-28
  - [evidence link](https://huggingface.co/api/models/allenai/Llama-3.1-Tulu-3-405B/paths-info/eac9accdae0f6d693c79f55b4d6ad792966c47ae)
- Canonical: https://alexgetman.com/models/ai2/llama-3-1-tulu-3-405b/

## Questions

### Are the weights of Llama 3.1 Tulu 3 405B publicly available?

Yes. Ai2 publishes the weights.

### When was Llama 3.1 Tulu 3 405B released?

Its release date is not established. Signal Forge first recorded it on 11 Nov 2026.

## Evidence links

- [huggingface:allenai](https://huggingface.co/allenai/Llama-3.1-Tulu-3-405B)
- [hf-author-artifacts:allenai](https://huggingface.co/api/models/allenai/Llama-3.1-Tulu-3-405B/paths-info/eac9accdae0f6d693c79f55b4d6ad792966c47ae)

## Signals