What is the difference between Claude Sonnet 4.5 and Healer Alpha?

Claude Sonnet 4.5 is developed by Anthropic while Healer Alpha is developed by OpenRouter. Claude Sonnet 4.5 has a 200K token context window vs Healer Alpha's 262K. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or Healer Alpha?

It depends on your use case. Claude Sonnet 4.5 and Healer Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Healer Alpha?

Claude Sonnet 4.5 costs $3/M input tokens and Healer Alpha costs $0/M input tokens. Healer Alpha is $3.00/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 Sonnet 4.5 and Healer Alpha on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Healer Alpha 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 Mar 2026

Claude Sonnet 4.5vsHealer Alpha

Healer Alpha is cheaper than Claude Sonnet 4.5 at $0/M vs $3/M input tokens.

Claude Sonnet 4.5 and Healer Alpha compared across 41 shared prompts
Spec	Claude Sonnet 4.5	Healer Alpha
Input price	$3/M tokens	Free
Output price	$15/M tokens	Free
Context window	200K tokens	262K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2025	Mar 2026