What is the difference between Gemini 2.0 Flash Thinking and GPT-4.5?

Gemini 2.0 Flash Thinking is developed by Google AI while GPT-4.5 is developed by OpenAI. Gemini 2.0 Flash Thinking has a 500K token context window vs GPT-4.5's 128K. You can compare their actual outputs across 15 challenges on Rival to see how they differ in practice.

Which is better, Gemini 2.0 Flash Thinking or GPT-4.5?

It depends on your use case. Gemini 2.0 Flash Thinking and GPT-4.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 15 challenges so you can judge which fits your needs best.

How much does Gemini 2.0 Flash Thinking cost compared to GPT-4.5?

Gemini 2.0 Flash Thinking costs $0.25/M input tokens and GPT-4.5 costs $75/M input tokens. Gemini 2.0 Flash Thinking is $74.75/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 Gemini 2.0 Flash Thinking and GPT-4.5 on Rival?

This page shows a side-by-side comparison of Gemini 2.0 Flash Thinking and GPT-4.5 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 Feb 2025

Gemini 2.0 Flash ThinkingvsGPT-4.5

Gemini 2.0 Flash Thinking is cheaper than GPT-4.5 at $0.25/M vs $75/M input tokens.

Gemini 2.0 Flash Thinking and GPT-4.5 compared across 15 shared prompts
Spec	Gemini 2.0 Flash Thinking	GPT-4.5
Input price	$0.25/M tokens	$75/M tokens
Output price	$0.5/M tokens	$150/M tokens
Context window	500K tokens	128K tokens
Parameters	Not disclosed	Not disclosed
Free API (OpenRouter)	No	No
Released	Dec 2024	Feb 2025
MMLU	82.3%	90.8%