Nemotron 3.5 Bolt E4B
Nemotron 3.5 Bolt E4B is an open-weight small language model from NVIDIA, released on October 23, 2026.
- Developer
- NVIDIA
- Released
- October 23, 2026
- Total parameters
- 8B
- Architecture
- Dense
- Context window
- 64K
- Input
- Text
- License
- OpenMDW License Agreement v1.1
- Commercial use
- Yes
- Official weights, GB
- 16 GB
- Hugging Face repository
- huggingface.co
- Checked on
Nemotron 3.5 Bolt E4B is a dense model with 8B parameters. NVIDIA describes it as having 4B effective parameters and builds it on Gemma 4 E4B with its own post-training, aimed at voice and device assistants. NVIDIA lists a context window of up to 64K tokens. The model takes text and produces text. The weights are released under the OpenMDW License Agreement v1.1, which allows commercial use.
The official BF16 weights on Hugging Face take about 16.0 GB. Running the model needs at least that much memory across GPUs and system RAM, plus room for the context cache; NVIDIA also publishes a 4-bit Q4_K_M GGUF build (about 6.2 GB) that needs less.
- Total parameters, billions
- 8B
- Context window, tokens
- 65.54K
- License type
- Custom license
- License conditions
- OpenMDW 1.1: redistributions must include the agreement and origin notices.
- Weights precision
- BF16
- Official quantized or alternative versions
- nvidia/NVIDIA-Nemotron-3.5-Bolt-E4B-4GB; nvidia/NVIDIA-Nemotron-3.5-Bolt-E4B-4GB-DFlash
- License text
- raw.githubusercontent.com
- Sources
Page URL Hugging Face model card https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Bolt-E4B-BF16/raw/main/README.md Hugging Face weights index https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Bolt-E4B-BF16/raw/main/model.safetensors.index.json NVIDIA announcement (October 23, 2026) https://research.nvidia.com/labs/nemotron/NVIDIA-Nemotron-3.5-Bolt-E4B-4GB/ License text on GitHub https://raw.githubusercontent.com/OpenMDW/OpenMDW/refs/heads/main/1.1/LICENSE.OpenMDW-1.1
Questions
What license does Nemotron 3.5 Bolt E4B use?
How much memory does Nemotron 3.5 Bolt E4B need?
How many parameters does Nemotron 3.5 Bolt E4B have?
What context window does Nemotron 3.5 Bolt E4B have?
Sources
Every figure comes from the developer’s model card, license text and official announcements, and from the model’s Hugging Face repository metadata. Each model page lists its sources and the date they were checked; the register is rechecked every week.