Claude 3 OpusvsGemini 2.5 Flash Preview 05-20 (thinking)
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper than Claude 3 Opus at $0.15/M vs $15/M input tokens.
| Spec | Claude 3 Opus | Gemini 2.5 Flash Preview 05-20 (thinking) |
|---|---|---|
| Input price | $15/M tokens | $0.15/M tokens |
| Output price | $75/M tokens | $3.5/M tokens |
| Context window | 200K tokens | 1.0M tokens |
| Parameters | Not disclosed | Not disclosed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | May 2025 |
Our Verdict
Claude 3 Opus
Gemini 2.5 Flash Preview 05-20 (thinking)
Not enough votes to call it. On the specs, nothing separates them.
Gemini 2.5 Flash Preview 05-20 (thinking) costs 21x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude 3 Opus
Input
$15.00
Output
$75.00
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
100× cheaper
Output
$3.50
21× cheaper
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both: 100× input, 21× output.
Writing DNA
Style Comparison
Similarity
75%
Claude 3 Opus uses 48.1x more hedging
Claude 3 Opus
Gemini 2.5 Flash Preview 05-20 (thinking)
54%Vocabulary70%
14wSentence Length11w
0.48Hedging0.00
0.0Bold4.2
3.0Lists7.3
0.00Emoji0.00
0.00Headings0.00
0.06Transitions0.00
Based on 3 + 3 text responses
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