What is the difference between Claude Opus 4 and Gemini 1.5 Pro?

Claude Opus 4 is developed by Anthropic while Gemini 1.5 Pro is developed by Google AI. Claude Opus 4 has a 200K token context window vs Gemini 1.5 Pro's 1.0M. in 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 18 challenges.

Which is better, Claude Opus 4 or Gemini 1.5 Pro?

Based on 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups against Gemini 1.5 Pro.

How much does Claude Opus 4 cost compared to Gemini 1.5 Pro?

Claude Opus 4 costs $15/M input tokens and Gemini 1.5 Pro costs $3.5/M input tokens. Gemini 1.5 Pro is $11.50/M cheaper per input. The more expensive model wins 100% of duels, so the premium may be justified by quality.

How are Claude Opus 4 vs Gemini 1.5 Pro votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 18 challenges. All vote data is part of Rival's open dataset.

What is the difference between Claude Opus 4 and Gemini 1.5 Pro?

Claude Opus 4 is developed by Anthropic while Gemini 1.5 Pro is developed by Google AI. Claude Opus 4 has a 200K token context window vs Gemini 1.5 Pro's 1.0M. in 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 18 challenges.

Which is better, Claude Opus 4 or Gemini 1.5 Pro?

Based on 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups against Gemini 1.5 Pro.

How much does Claude Opus 4 cost compared to Gemini 1.5 Pro?

Claude Opus 4 costs $15/M input tokens and Gemini 1.5 Pro costs $3.5/M input tokens. Gemini 1.5 Pro is $11.50/M cheaper per input. The more expensive model wins 100% of duels, so the premium may be justified by quality.

How are Claude Opus 4 vs Gemini 1.5 Pro votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 18 challenges. All vote data is part of Rival's open dataset.

Claude Opus 4 vs Gemini 1.5 Pro: Which Is Better?

Updated May 2025

Our Verdict

Claude Opus 4Winner

Gemini 1.5 ProRunner-up

Pick Claude Opus 4. In 2 blind votes, Claude Opus 4 wins 100% of the time. That's not luck.

Gemini 1.5 Pro is 7.1x cheaper per token — worth considering if cost matters.

Clear winner

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Gemini 1.5 Pro

Input

$3.50

4.3× cheaper

Output

$10.50

7.1× cheaper

Gemini 1.5 Pro is cheaper on both — 4.3× input, 7.1× output

Writing DNA

Style Comparison

Similarity

37%

Claude Opus 4 uses 11.2x more emoji

Claude Opus 4

Gemini 1.5 Pro

64%Vocabulary61%

62wSentence Length15w

0.52Hedging0.80

4.4Bold3.7

9.1Lists3.3

0.11Emoji0.00

1.87Headings0.08

0.27Transitions0.09

Based on 16 + 8 text responses

Research

What we learned reading every model

Claude Opus 4 and Gemini 1.5 Pro have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Gemini 1.5 Pro vs GPT-5New provider

Gemini 1.5 Pro vs MiniMax M3New provider

Claude Opus 4 vs Llama 4 MaverickNew provider

Updated May 2025

Our Verdict

Claude Opus 4Winner

Gemini 1.5 ProRunner-up

Pick Claude Opus 4. In 2 blind votes, Claude Opus 4 wins 100% of the time. That's not luck.

Gemini 1.5 Pro is 7.1x cheaper per token — worth considering if cost matters.

Clear winner

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Gemini 1.5 Pro

Input

$3.50

4.3× cheaper

Output

$10.50

7.1× cheaper

Gemini 1.5 Pro is cheaper on both — 4.3× input, 7.1× output

Writing DNA

Style Comparison

Similarity

37%

Claude Opus 4 uses 11.2x more emoji

Claude Opus 4

Gemini 1.5 Pro

64%Vocabulary61%

62wSentence Length15w

0.52Hedging0.80

4.4Bold3.7

9.1Lists3.3

0.11Emoji0.00

1.87Headings0.08

0.27Transitions0.09

Based on 16 + 8 text responses

Research

What we learned reading every model

Claude Opus 4 and Gemini 1.5 Pro have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Gemini 1.5 Pro vs GPT-5New provider

Gemini 1.5 Pro vs MiniMax M3New provider

Claude Opus 4 vs Llama 4 MaverickNew provider