Gemini 2.5 Pro ExperimentalvsGPT OSS 20B
GPT OSS 20B is cheaper than Gemini 2.5 Pro Experimental at $0.02/M vs $1/M input tokens.
| Spec | Gemini 2.5 Pro Experimental | GPT OSS 20B |
|---|---|---|
| Input price | $1/M tokens | $0.02/M tokens |
| Output price | $2/M tokens | $0.1/M tokens |
| Context window | 1.0M tokens | 131K tokens |
| Released | Mar 2025 | Aug 2025 |
| MMLU | 90.0% | Matches o3-mini |
Our Verdict
Gemini 2.5 Pro Experimental
GPT OSS 20BRunner-up
Not enough votes to call it. On the specs, Gemini 2.5 Pro Experimental has the edge: bigger model tier, bigger context window.
Gemini 2.5 Pro Experimental wins Image Generation and Web Design. GPT OSS 20B costs 20x less per token.
Slight edge
API pricing
Cost per 1M tokens
Gemini 2.5 Pro Experimental
Input
$1.00
Output
$2.00
GPT OSS 20B
Input
$0.02
50× cheaper
Output
$0.10
20× cheaper
GPT OSS 20B is cheaper on both — 50× input, 20× output
Writing DNA
Style Comparison
Similarity
56%
GPT OSS 20B uses 10.2x more emoji
Gemini 2.5 Pro Experimental
GPT OSS 20B
54%Vocabulary54%
15wSentence Length17w
0.35Hedging0.26
5.6Bold5.9
3.9Lists3.3
0.00Emoji0.10
0.39Headings0.75
0.17Transitions0.32
Based on 18 + 21 text responses
Research
What we learned reading every model
FAQ
Common questions
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