Gemma 4 31BvsGPT-5.1-Codex
Gemma 4 31B is cheaper than GPT-5.1-Codex at $0.14/M vs $1.25/M input tokens.
| Spec | Gemma 4 31B | GPT-5.1-Codex |
|---|---|---|
| Input price | $0.14/M tokens | $1.25/M tokens |
| Output price | $0.4/M tokens | $10/M tokens |
| Context window | 262K tokens | 400K tokens |
| Released | Apr 2026 | Nov 2025 |
Our Verdict
Gemma 4 31B
GPT-5.1-Codex
Not enough votes to call it. On the specs, nothing separates them.
Gemma 4 31B costs 25x less per token.
Too close to call
API pricing
Cost per 1M tokens
Gemma 4 31B
Input
$0.14
8.9× cheaper
Output
$0.40
25× cheaper
GPT-5.1-Codex
Input
$1.25
Output
$10.00
Gemma 4 31B is cheaper on both — 8.9× input, 25× output
Writing DNA
Style Comparison
Similarity
50%
Gemma 4 31B uses 23.8x more emoji
Gemma 4 31B
GPT-5.1-Codex
57%Vocabulary70%
18wSentence Length17w
0.37Hedging0.39
7.1Bold3.4
4.0Lists3.5
0.24Emoji0.00
0.94Headings0.50
0.16Transitions0.38
Based on 23 + 14 text responses
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