NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total. It is suited for high-throughput agentic workloads and specialized tasks that...
Model details →NVIDIA: Nemotron 3.5 Lightning vs OpenAI: GPT-5 Nano
OpenAI: GPT-5 Nano wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
Model details →Side-by-side comparison
| Capability | NVIDIA: Nemotron 3.5 Lightning | OpenAI: GPT-5 Nano | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 262K | 400K | 🏆 OpenAI: GPT-5 Nano |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.10 | $0.05 | 🏆 OpenAI: GPT-5 Nano |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.25 | $0.40 | 🏆 NVIDIA: Nemotron 3.5 Lightning |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 OpenAI: GPT-5 Nano |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 OpenAI: GPT-5 Nano |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is NVIDIA: Nemotron 3.5 Lightning better than OpenAI: GPT-5 Nano?
OpenAI: GPT-5 Nano wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between NVIDIA: Nemotron 3.5 Lightning and OpenAI: GPT-5 Nano?
Input: $0.10 vs $0.05 per 1M tokens. Output: $0.25 vs $0.40 per 1M tokens.
What context windows do NVIDIA: Nemotron 3.5 Lightning and OpenAI: GPT-5 Nano support?
NVIDIA: Nemotron 3.5 Lightning supports up to 262K tokens. OpenAI: GPT-5 Nano supports up to 400K tokens.
Do both NVIDIA: Nemotron 3.5 Lightning and OpenAI: GPT-5 Nano support tool calling?
NVIDIA: Nemotron 3.5 Lightning: not advertised. OpenAI: GPT-5 Nano: yes.