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  5. Claude Opus 4.7vsGemini 2.5 Flash Preview 05-20 (thinking)
Updated Apr 2026

Claude Opus 4.7vsGemini 2.5 Flash Preview 05-20 (thinking)

Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper than Claude Opus 4.7 at $0.15/M vs $5/M input tokens.

Claude Opus 4.7 and Gemini 2.5 Flash Preview 05-20 (thinking) compared across 11 shared prompts
SpecClaude Opus 4.7Gemini 2.5 Flash Preview 05-20 (thinking)
Input price$5/M tokens$0.15/M tokens
Output price$25/M tokens$3.5/M tokens
Context window1.0M tokens1.0M tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedApr 2026May 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 11 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Claude Opus 4.7461 words
Here's a 3-minute stand-up routine: So I turned 35 recently, and something weird happens at 35. Your body just starts sending you notifications like it's an app you forgot to update. I bent down to tie my shoe last week and my knee made a sound. Not a pop. Not a crack. A sound. Like it was trying to communicate.
Read the full answer
Gemini 2.5 Flash Preview 05-20 (thinking)467 words
(Lights up on a stage. Comedian walks to center, adjusts mic, smiles warmly.) \"Alright, alright, settle down you crazy people! Thanks for having me. (Pause fo r applause/laughter) You know, I was scrolling through Instagram earlier, and it\'s just a constant ba rrage of people \'living thei r best life,\' isn\'t it?
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude Opus 4.799 words
Here are 5 jokes for you: Why don't scientists trust atoms? Because they make up everything! I told my wife she was drawing her eyebrows too high. She looked surprised. Why did the scarecrow win an award? Because he was outstanding in his field! I'm reading a book about anti-gravity. It's impossible to put down!
Read the full answer
Gemini 2.5 Flash Preview 05-20 (thinking)93 words
Here are 5 jokes: Why don\'t scientists trust atoms? Because they make up everything! What do you call a fake noodle? An impasta! Why did the scarecrow win an award? Because he was outstanding in his field! I told my wife she was drawing her eyebrows too high. She looked surprised.
Read the full answer
Our Verdict
Claude Opus 4.7
Claude Opus 4.7
Gemini 2.5 Flash Preview 05-20 (thinking)
Gemini 2.5 Flash Preview 05-20 (thinking)Runner-up

Not enough votes to call it. On the specs, Claude Opus 4.7 has the edge: bigger model tier, newer.

Gemini 2.5 Flash Preview 05-20 (thinking) costs 7.1x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 4.7
Input
$5.00
Output
$25.00
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
33× cheaper
Output
$3.50
7.1× cheaper

Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both: 33× input, 7.1× output.

Where to run it

4 hosts

Claude Opus 4.74 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·100% upAzure AI Foundry$5.00 in·$25.00 out·1M—Anthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up
Gemini 2.5 Flash Preview 05-20 (thinking)

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 20 Sep 2026.

Writing DNA

Style Comparison

Similarity
59%

Claude Opus 4.7 uses 50.6x more hedging

Claude Opus 4.7
Gemini 2.5 Flash Preview 05-20 (thinking)
64%Vocabulary70%
20wSentence Length11w
0.51Hedging0.00
4.6Bold4.2
3.8Lists7.3
0.86Emoji0.00
1.60Headings0.00
0.03Transitions0.00
Based on 27 + 3 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Opus 4.7 is developed by Anthropic while Gemini 2.5 Flash Preview 05-20 (thinking) is developed by Google AI. Claude Opus 4.7 has a 1.0M token context window vs Gemini 2.5 Flash Preview 05-20 (thinking)'s 1.0M. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 4.7 and Gemini 2.5 Flash Preview 05-20 (thinking) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.

Claude Opus 4.7 costs $5/M input tokens and Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens. Gemini 2.5 Flash Preview 05-20 (thinking) is $4.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude Opus 4.7 and Gemini 2.5 Flash Preview 05-20 (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.

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