What is the difference between Mercury and Sonar Pro Search?

Mercury is developed by Inception while Sonar Pro Search is developed by Perplexity. Mercury has a 32K token context window vs Sonar Pro Search's 200K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Mercury or Sonar Pro Search?

It depends on your use case. Mercury and Sonar Pro Search each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Mercury cost compared to Sonar Pro Search?

Mercury costs $10/M input tokens and Sonar Pro Search costs $3/M input tokens. Sonar Pro Search is $7.00/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 Mercury and Sonar Pro Search on Rival?

This page shows a side-by-side comparison of Mercury and Sonar Pro Search 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 Oct 2025

MercuryvsSonar Pro Search

Sonar Pro Search is cheaper than Mercury at $3/M vs $10/M input tokens.

Mercury and Sonar Pro Search compared across 53 shared prompts
Spec	Mercury	Sonar Pro Search
Input price	$10/M tokens	$3/M tokens
Output price	$10/M tokens	$15/M tokens
Context window	32K tokens	200K tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Jun 2025	Oct 2025