Gemini 2.5 Flash Preview 05-20 (thinking)vsOpenAI o4 Mini High
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper than OpenAI o4 Mini High at $0.15/M vs $1.1/M input tokens.
| Spec | Gemini 2.5 Flash Preview 05-20 (thinking) | OpenAI o4 Mini High |
|---|---|---|
| Input price | $0.15/M tokens | $1.1/M tokens |
| Output price | $3.5/M tokens | $4.4/M tokens |
| Context window | 1.0M tokens | 200K tokens |
| Released | May 2025 | Apr 2025 |
Our Verdict
Gemini 2.5 Flash Preview 05-20 (thinking)
OpenAI o4 Mini HighRunner-up
Not enough votes to call it. On the specs, Gemini 2.5 Flash Preview 05-20 (thinking) has the edge: newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
7.3× cheaper
Output
$3.50
1.3× cheaper
OpenAI o4 Mini High
Input
$1.10
Output
$4.40
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both — 7.3× input, 1.3× output
Writing DNA
Style Comparison
Similarity
63%
OpenAI o4 Mini High uses 32.8x more hedging
Gemini 2.5 Flash Preview 05-20 (thinking)
OpenAI o4 Mini High
70%Vocabulary70%
11wSentence Length18w
0.00Hedging0.33
4.2Bold0.0
7.3Lists1.3
0.00Emoji0.02
0.00Headings0.00
0.00Transitions0.04
Based on 3 + 14 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
Gemini 2.5 Flash Preview 05-20 (thinking) vs MiniMax M3New provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs Ox AlphaNew provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs Claude Opus 4New provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs Claude Opus 4.1New provider
OpenAI o4 Mini High vs Golden Gate ClaudeNew provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT-2Cross-provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT-3.5 TurboCross-provider
Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT-4Cross-provider