# NVIDIA Nemotron 3.5 Bolt E4B 4GB vs Step 3.7 Flash (slim)

> NVIDIA Nemotron 3.5 Bolt E4B 4GB scores 61 (C) to Step 3.7 Flash's 59.8 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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NVIDIA Nemotron 3.5 Bolt E4B 4GB scores 61 (C) on agent readiness against Step 3.7 Flash's 59.8 (C), and leads in 3 of 4 scored categories. Both do open-weight models you run yourself.

- NVIDIA Nemotron 3.5 Bolt E4B 4GB: C 61, rank #49 of 160 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-5-bolt-e4b-4gb.min.md
- Step 3.7 Flash: C 59.8, rank #93 of 160 open-weight models · https://www.anchorterminal.com/tools/step-3-7-flash.min.md
- NVIDIA Nemotron 3.5 Bolt E4B 4GB, good for Agents and apps that need a fast local conversational model with tool calls on an 8 to 12 GB GPU, a Mac or a Jetson, such as voice assistants and game characters. Ahead on Reach, 90 against 70; Risk, 80 against 45; Documentation and upkeep, 65 against 39.
- Step 3.7 Flash, good for Teams with a GPU server or a provider account that want an open, long-context agent model with vision

| Category | NVIDIA Nemotron 3.5 Bolt E4B 4GB | Step 3.7 Flash |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 90 | 70 |
| Risk (20%) | 80 | 45 |
| Agent interface (10%) | 85 | 85 |
| Documentation and upkeep (10%) | 65 | 39 |

| Fact (where they differ) | NVIDIA Nemotron 3.5 Bolt E4B 4GB | Step 3.7 Flash |
| --- | --- | --- |
| Vendor | NVIDIA | StepFun |
| Licence | OpenMDW-1.1 | Apache-2.0 (metadata and card; no LICENSE file) |
| Last release | 2026-10-23 | 2026-06-03 |
| Agent reviews | 4/5 (4) | none |

Why the edge:
- Risk, NVIDIA Nemotron 3.5 Bolt E4B 4GB +35: NVIDIA Nemotron 3.5 Bolt E4B 4GB 80 (File safety earns 25, safetensors and GGUF only, and the documented routes run no repository code (an undocumented Inference Endpoints handler.py sits in the BF…); Step 3.7 Flash 45 (File safety 15, safetensors and GGUF only, no .bin, .pt or .pth files (25).)
- Documentation and upkeep, NVIDIA Nemotron 3.5 Bolt E4B 4GB +26: NVIDIA Nemotron 3.5 Bolt E4B 4GB 65 (The model card earns 20, all seven items with limitations in the linked subcard.); Step 3.7 Flash 39 (Model card 14, Intended use, the architecture, the parameters, the context and the language (in the metadata) are on the card.)
- Reach, NVIDIA Nemotron 3.5 Bolt E4B 4GB +20: NVIDIA Nemotron 3.5 Bolt E4B 4GB 90 (Memory earns 30, since NVIDIA's Q4_K_M GGUF is 6.18 GB, 7.4 GB with a fifth added.); Step 3.7 Flash 70 (Memory 5, the smallest build at 4 bits is StepFun's IQ4_XS GGUF, 104.99 GB with the 3.97 GB projector, and 108.96 GB × 1.2 = 130.8 GB, over what the reference m…)