What is the difference between Claude Opus 4.8 and Nova Premier 1.0?

Claude Opus 4.8 is developed by Anthropic while Nova Premier 1.0 is developed by Amazon. Claude Opus 4.8 has a 1.0M token context window vs Nova Premier 1.0's 1.0M. You can compare their actual outputs across 50 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.8 or Nova Premier 1.0?

It depends on your use case. Claude Opus 4.8 and Nova Premier 1.0 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 50 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.8 cost compared to Nova Premier 1.0?

Claude Opus 4.8 costs $5/M input tokens and Nova Premier 1.0 costs $2.5/M input tokens. Nova Premier 1.0 is $2.50/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude Opus 4.8 and Nova Premier 1.0 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 and Nova Premier 1.0 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated May 2026

Claude Opus 4.8vsNova Premier 1.0

Nova Premier 1.0 is cheaper than Claude Opus 4.8 at $2.5/M vs $5/M input tokens.

Claude Opus 4.8 and Nova Premier 1.0 compared across 50 shared prompts
Spec	Claude Opus 4.8	Nova Premier 1.0
Input price	$5/M tokens	$2.5/M tokens
Output price	$25/M tokens	$12.5/M tokens
Context window	1.0M tokens	1.0M tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	May 2026	Oct 2025