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Nova Premier 1.0 vs Claude Opus 5.5

For a typical chat reply (2,000 tokens in, 400 out), Claude Opus 5.5 costs 1.6× as much as Nova Premier 1.0: $16.00 against $10.00 per 1,000 requests at list price on 2026-09-28.

Nova Premier 1.0Claude Opus 5.5
Input, per 1M tokens$2.50$4.00
Output, per 1M tokens$12.50$20.00
Context window1M1M
Classification or routing (600 tokens in, 10 out), per 1,000$1.63$2.60
Chat reply (2,000 in, 400 out), per 1,000$10.00$16.00
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$26.25$42.00
Confidence signalnono
Tool callingyesyes
BANKING77, correct of 400not measured354

Which one should carry your traffic?

If Nova Premier 1.0 answers your requests as well as Claude Opus 5.5, moving that traffic saves 38% 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 · Claude Opus 5.5 profile · Measure it on your traffic