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Nemotron 3 Ultra vs Grok 4.7

For a typical chat reply (2,000 tokens in, 400 out), Grok 4.7 costs 2.4× as much as Nemotron 3 Ultra: $5.12 against $2.16 per 1,000 requests at list price on 2026-09-28.

Nemotron 3 UltraGrok 4.7
Input, per 1M tokens$0.60$1.60
Output, per 1M tokens$2.40$4.80
Context window262K500K
Classification or routing (600 tokens in, 10 out), per 1,000$0.384$1.01
Chat reply (2,000 in, 400 out), per 1,000$2.16$5.12
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$6.00$15.20
Confidence signalnoyes
Tool callingyesyes

Which one should carry your traffic?

If Nemotron 3 Ultra answers your requests as well as Grok 4.7, moving that traffic saves 58% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Nemotron 3 Ultra does not expose a confidence signal through OpenRouter, so Gimbix would test it as a full replacement rather than a first answer.

Nemotron 3 Ultra profile · Grok 4.7 profile · Measure it on your traffic