Skip to content

docs: announce NVIDIA Nemotron 3 Ultra public release #4159

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
cuichenx merged 1 commit into from
Jun 4, 2026
Merged

docs: announce NVIDIA Nemotron 3 Ultra public release #4159

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,8 @@
</div>

## 📣 News
- [06/04/2026] [**NVIDIA Nemotron 3 Ultra**](https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16) is now public! Day-0 support for the 550B-A55B hybrid Mamba-Transformer MoE model is available on the [`nemotron_3_ultra`](https://github.com/NVIDIA-NeMo/Megatron-Bridge/tree/nemotron_3_ultra) branch, including checkpoint conversion, inference, SFT, PEFT (LoRA), and pretraining examples. Read the [NVIDIA Technical Blog](https://developer.nvidia.com/blog/nvidia-nemotron-3-ultra-powers-faster-more-efficient-reasoning-for-long-running-agents/) and see the [examples README](https://github.com/NVIDIA-NeMo/Megatron-Bridge/blob/nemotron_3_ultra/examples/models/nemotron/nemotron_3/ultra/README.md) for the full walkthrough.

- [05/28/2026] [**Step-3.7-Flash**](https://github.com/NVIDIA-NeMo/Megatron-Bridge/tree/main/examples/models/stepfun/step37) is now merged on **main**! See the [examples README](https://github.com/NVIDIA-NeMo/Megatron-Bridge/tree/main/examples/models/stepfun/step37/README.md) for sft training details.

- [05/26/2026] [**DeepSeek V4**](https://huggingface.co/deepseek-ai/DeepSeek-V4-Flash) FP8 support is now available in Megatron Bridge, including HF↔Megatron conversion, quantized checkpoint export with regenerated scale tensors, and downstream verification with Megatron-backend GRPO.
Expand Down
Loading