LLM Perks

Nemotron 3.5 Bolt E4b

Free right now Mid-size New
ReasoningTool useOpen weights

Nemotron 3.5 Bolt E4b is a language model from NVIDIA. It is currently free at 1 provider with up to — tokens of context. The model supports step-by-step reasoning, supports tool calling. Its weights are open, so it can also run locally.

Developer
NVIDIA
Type
Text
License
Open weights
Free since
October 22, 2026

Where to use Nemotron 3.5 Bolt E4b for free

Each row is a separate free endpoint with its own limits.

ProviderContextLimitCard
NVIDIA Build
nvidia/nemotron-3.5-bolt-e4b
— Free serverless inference for development; limits and model availability may change. No Open

Quick start

curl https://integrate.api.nvidia.com/v1/chat/completions \
  -H "Authorization: Bearer $NVIDIA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3.5-bolt-e4b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Example for NVIDIA Build. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.

Benchmarks

This model is not on the Artificial Analysis leaderboard yet. We do not publish our own estimates.

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FAQ

Is Nemotron 3.5 Bolt E4b free?

Yes. As of October 22, 2026, Nemotron 3.5 Bolt E4b is free at NVIDIA Build. Each provider has its own limits — see the table above.

How do I call Nemotron 3.5 Bolt E4b via API?

Use any OpenAI-compatible client with base URL https://integrate.api.nvidia.com/v1, model ID nvidia/nemotron-3.5-bolt-e4b, and a NVIDIA Build key.

Is Nemotron 3.5 Bolt E4b open-weight?

Yes, the weights are published — you can download and run it locally, for example with Ollama or LM Studio.