What is the difference between Claude Sonnet 4.5 and Gemini Pro 1.0?

Claude Sonnet 4.5 is developed by Anthropic while Gemini Pro 1.0 is developed by Google AI. Claude Sonnet 4.5 has a 200K token context window vs Gemini Pro 1.0's 33K. You can compare their actual outputs across 21 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or Gemini Pro 1.0?

It depends on your use case. Claude Sonnet 4.5 and Gemini Pro 1.0 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 21 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Gemini Pro 1.0?

Claude Sonnet 4.5 costs $3/M input tokens and Gemini Pro 1.0 costs $0.5/M input tokens. Gemini Pro 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 Sonnet 4.5 and Gemini Pro 1.0 on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Gemini Pro 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 Sep 2025

Claude Sonnet 4.5vsGemini Pro 1.0

Gemini Pro 1.0 is cheaper than Claude Sonnet 4.5 at $0.5/M vs $3/M input tokens.

Claude Sonnet 4.5 and Gemini Pro 1.0 compared across 21 shared prompts
Spec	Claude Sonnet 4.5	Gemini Pro 1.0
Input price	$3/M tokens	$0.5/M tokens
Output price	$15/M tokens	$1.5/M tokens
Context window	200K tokens	33K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2025	Dec 2023