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Nova Premier 1.0 vs GPT-5.4

For a typical chat reply (2,000 tokens in, 400 out), GPT-5.4 costs 1.1× as much as Nova Premier 1.0: $11.00 against $10.00 per 1,000 requests at list price on 2026-09-28.

Nova Premier 1.0GPT-5.4
Input, per 1M tokens$2.50$2.50
Output, per 1M tokens$12.50$15.00
Context window1M1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$1.63$1.65
Chat reply (2,000 in, 400 out), per 1,000$10.00$11.00
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$26.25$27.50
Confidence signalnono
Tool callingyesyes

Which one should carry your traffic?

If Nova Premier 1.0 answers your requests as well as GPT-5.4, moving that traffic saves 9% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Nova Premier 1.0 does not expose a confidence signal through OpenRouter, so Gimbix would test it as a full replacement rather than a first answer.

Nova Premier 1.0 profile · GPT-5.4 profile · Measure it on your traffic