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Nemotron 3.5 Lightning vs GPT-6 Luna

For a typical chat reply (2,000 tokens in, 400 out), GPT-6 Luna costs 1.7× as much as Nemotron 3.5 Lightning: $0.40 against $0.24 per 1,000 requests at list price on 2026-09-28.

Nemotron 3.5 LightningGPT-6 Luna
Input, per 1M tokens$0.08$0.10
Output, per 1M tokens$0.20$0.50
Context window1M1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$0.05$0.065
Chat reply (2,000 in, 400 out), per 1,000$0.24$0.40
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$0.74$1.05
Confidence signalyesno
Tool callingyesyes
BANKING77, correct of 400255320

Which one should carry your traffic?

If Nemotron 3.5 Lightning answers your requests as well as GPT-6 Luna, moving that traffic saves 40% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Nemotron 3.5 Lightning exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-6 Luna.

Nemotron 3.5 Lightning profile · GPT-6 Luna profile · Measure it on your traffic