Claude Opus 4.6vsGemini 2.5 Flash Preview 05-20 (thinking)
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper than Claude Opus 4.6 at $0.15/M vs $5/M input tokens.
| Spec | Claude Opus 4.6 | Gemini 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 window | 1.0M tokens | 1.0M tokens |
| Released | Feb 2026 | May 2025 |
Our Verdict
Claude Opus 4.6
Gemini 2.5 Flash Preview 05-20 (thinking)Runner-up
Not enough votes to call it. On the specs, Claude Opus 4.6 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
API pricing
Cost per 1M tokens
Claude Opus 4.6
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
Writing DNA
Style Comparison
Similarity
40%
Claude Opus 4.6 uses 67.5x more hedging
Claude Opus 4.6
Gemini 2.5 Flash Preview 05-20 (thinking)
53%Vocabulary70%
35wSentence Length11w
0.68Hedging0.00
5.2Bold4.2
2.9Lists7.3
0.21Emoji0.00
1.34Headings0.00
0.03Transitions0.00
Based on 23 + 3 text responses
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