What is the difference between Claude Haiku 4.5 and Gemini 2.5 Flash Preview?

Claude Haiku 4.5 is developed by Anthropic while Gemini 2.5 Flash Preview is developed by Google AI. Claude Haiku 4.5 has a 200K token context window vs Gemini 2.5 Flash Preview's 1.0M. You can compare their actual outputs across 27 challenges on Rival to see how they differ in practice.

Which is better, Claude Haiku 4.5 or Gemini 2.5 Flash Preview?

It depends on your use case. Claude Haiku 4.5 and Gemini 2.5 Flash Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 27 challenges so you can judge which fits your needs best.

How much does Claude Haiku 4.5 cost compared to Gemini 2.5 Flash Preview?

Claude Haiku 4.5 costs $1/M input tokens and Gemini 2.5 Flash Preview costs $0.15/M input tokens. Gemini 2.5 Flash Preview is $0.85/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 Haiku 4.5 and Gemini 2.5 Flash Preview on Rival?

This page shows a side-by-side comparison of Claude Haiku 4.5 and Gemini 2.5 Flash Preview 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

Claude Haiku 4.5vsGemini 2.5 Flash Preview

Gemini 2.5 Flash Preview is cheaper than Claude Haiku 4.5 at $0.15/M vs $1/M input tokens.

Claude Haiku 4.5 and Gemini 2.5 Flash Preview compared across 27 shared prompts
Spec	Claude Haiku 4.5	Gemini 2.5 Flash Preview
Input price	$1/M tokens	$0.15/M tokens
Output price	$5/M tokens	$0.6/M tokens
Context window	200K tokens	1.0M tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Oct 2025	Apr 2025
SWE-bench Verified	73.3%	60.4%