What is the difference between Claude Opus 4.7 and Mercury?

Claude Opus 4.7 is developed by Anthropic while Mercury is developed by Inception. Claude Opus 4.7 has a 1.0M token context window vs Mercury's 32K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.7 or Mercury?

It depends on your use case. Claude Opus 4.7 and Mercury each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.7 cost compared to Mercury?

Claude Opus 4.7 costs $5/M input tokens and Mercury costs $10/M input tokens. Claude Opus 4.7 is $5.00/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 4.7 and Mercury on Rival?

This page shows a side-by-side comparison of Claude Opus 4.7 and Mercury 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 Apr 2026

Claude Opus 4.7vsMercury

Claude Opus 4.7 is cheaper than Mercury at $5/M vs $10/M input tokens.

Claude Opus 4.7 and Mercury compared across 54 shared prompts
Spec	Claude Opus 4.7	Mercury
Input price	$5/M tokens	$10/M tokens
Output price	$25/M tokens	$10/M tokens
Context window	1.0M tokens	32K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Apr 2026	Jun 2025