Field noteOct 24, 20261 min read1 source

NVIDIA has published the technical report , model checkpoints, and reinforcement-learning dataset list.

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NVIDIA has published a technical report and model assets for Nemotron 3.5 Bolt E4B 4GB, a small language model for fast conversational agents.

What changed: NVIDIA now publishes the Nemotron 3.5 Bolt E4B 4GB technical report, model checkpoints and reinforcement-learning dataset list, detailing benchmark and DFlash speed results.

The report describes it as further post-trained from Gemma4-E4B-it for multi-turn tool use, instruction following, input grounding, and structured output.

The release lists a Q4_K_M GGUF checkpoint, a BF16 Hugging Face-format checkpoint, and DFlash drafter variants for speculative decoding. NVIDIA also says the model is available through Hugging Face and NVIDIA NIM, with a free API endpoint and a local NIM download. The target memory footprint is about 4 GB.

In NVIDIA's RTX 5090 measurements, the Q4_K_M model recorded a 285 ms time to first token and a 70.2 representative benchmark average. With DFlash, NVIDIA reports 2.74x per-user decode speed versus non-speculative inference at concurrency one.

The report does not establish independent benchmark validation, performance on other hardware, production reliability, or the terms that govern every listed asset.

Evidence / sources

  1. 1research.nvidia.com/labs/nemotron/files/NVIDIA-Nemotron-3.5-Bolt-E4B-4GB-Technical-Report.pdf
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