Nemotron 3.5 Lightning (free)
Open weightToolsNVIDIA · Released August 2026
NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total.
It belongs to NVIDIA's open-weight Nemotron line, tuned for helpfulness and agents on top of leading open architectures.
Facts and pricing
- Provider
- NVIDIA
- Context window
- 1M tokens
- Input price
- 0 credits / 1M tokens ($0 raw)
- Output price
- 0 credits / 1M tokens ($0 raw)
- Vision (image input)
- No
- Tool calling
- Yes
- Extended reasoning
- No
Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.
Try Nemotron 3.5 Lightning now
Nemotron 3.5 Lightning (free) is a serving variant of Nemotron 3.5 Lightning, so Zeplik offers the Nemotron 3.5 Lightning row and routes your prompt there.
What Nemotron 3.5 Lightning (free) is best for
- Everyday chat and drafting on an open-weight model with transparent lineage
- Very long documents and codebases: a 1M-token window fits entire books or repositories in one conversation
- Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows
Example prompts
Prompts that suit a open weight model like Nemotron 3.5 Lightning (free):
- Draft a project update from these rough notes
- Explain how HTTPS works to a curious teenager
- Turn this list of features into a changelog entry
- Brainstorm objections to this proposal and how to answer them
NVIDIA family
| Model | Context | Input cr/M | Output cr/M | Released |
|---|---|---|---|---|
| Switchyard | 1M | -1.2e+7 | -1.2e+7 | September 2026 |
| Nemotron 3.5 Lightning | 262K | 0.59 | 1.7 | August 2026 |
| Nemotron 3.5 Lightning (free) | 1M | 0 | 0 | August 2026 |
| Nemotron 3.5 Content Safety (free) | 128K | 0 | 0 | June 2026 |
| Nemotron 3.5 Content Safety | 131K | 2.4 | 2.4 | June 2026 |
| Nemotron 3 Ultra (free) | 1M | 0 | 0 | June 2026 |
| Nemotron 3 Ultra | 262K | 6.0 | 26.4 | June 2026 |
| Nemotron 3 Nano Omni (free) | 256K | 0 | 0 | April 2026 |
| Nemotron 3 Super (free) | 262K | 0 | 0 | March 2026 |
| Nemotron 3 Super | 262K | 0.96 | 5.4 | March 2026 |
Frequently asked questions
- What is Nemotron 3.5 Lightning (free)?
- Nemotron 3.5 Lightning (free) is an AI model by NVIDIA. NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total.
- How much does Nemotron 3.5 Lightning (free) cost on Zeplik?
- Input tokens cost 0 credits per million and output tokens 0 credits per million (1 credit = $0.10; the raw provider rates are $0 and $0 per million). New accounts start with free credits.
- How long can a conversation with Nemotron 3.5 Lightning (free) be?
- Nemotron 3.5 Lightning (free) has a 1M-token context window (1,000,000 tokens), which covers the conversation plus any documents you attach.
- Does Nemotron 3.5 Lightning (free) support images and tools?
- Nemotron 3.5 Lightning (free) is text-only and supports tool calling.
Related models
Switchyard is an open-source model router that switches between multiple models to optimize the cost of requests.
NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total.
NVIDIA Nemotron 3.5 Content Safety is a compact 4B-parameter multimodal guardrail model from NVIDIA, fine-tuned from Google Gemma-3-4B.
NVIDIA Nemotron 3.5 Content Safety is a compact 4B-parameter multimodal guardrail model from NVIDIA, fine-tuned from Google Gemma-3-4B.
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE).
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE).
More you can do with Nemotron 3.5 Lightning (free)
- 467 AI skillsReady-to-run expert methods for writing, data, code and more, each running on Nemotron 3.5 Lightning (free) or any model you pick.
- 997 integrationsConnect Gmail, Slack, GitHub, Notion and hundreds more so the assistant can work in your apps.
- Simple pricingPlus, Pro and Max plans with a monthly credit allowance that works across every model.