What is the difference between Claude Sonnet 4 and Gemini 2.0 Flash Thinking?

Claude Sonnet 4 is developed by Anthropic while Gemini 2.0 Flash Thinking is developed by Google AI. Claude Sonnet 4 has a 200K token context window vs Gemini 2.0 Flash Thinking's 500K. You can compare their actual outputs across 21 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4 or Gemini 2.0 Flash Thinking?

It depends on your use case. Claude Sonnet 4 and Gemini 2.0 Flash Thinking 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 cost compared to Gemini 2.0 Flash Thinking?

Claude Sonnet 4 costs $3/M input tokens and Gemini 2.0 Flash Thinking costs $0.25/M input tokens. Gemini 2.0 Flash Thinking is $2.75/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 and Gemini 2.0 Flash Thinking on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4 and Gemini 2.0 Flash Thinking 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 2025

Claude Sonnet 4vsGemini 2.0 Flash Thinking

Gemini 2.0 Flash Thinking is cheaper than Claude Sonnet 4 at $0.25/M vs $3/M input tokens.

Claude Sonnet 4 and Gemini 2.0 Flash Thinking compared across 21 shared prompts
Spec	Claude Sonnet 4	Gemini 2.0 Flash Thinking
Input price	$3/M tokens	$0.25/M tokens
Output price	$15/M tokens	$0.5/M tokens
Context window	200K tokens	500K tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	May 2025	Dec 2024