GPT-5.1vsNova Premier 1.0
GPT-5.1 is cheaper than Nova Premier 1.0 at $1.25/M vs $2.5/M input tokens.
| Spec | GPT-5.1 | Nova Premier 1.0 |
|---|---|---|
| Input price | $1.25/M tokens | $2.5/M tokens |
| Output price | $10/M tokens | $12.5/M tokens |
| Context window | 400K tokens | 1.0M tokens |
| Released | Nov 2025 | Oct 2025 |
| SWE-bench Verified | 76.3% | 42.4% |
Our Verdict
GPT-5.1
Nova Premier 1.0Runner-up
Not enough votes to call it. On the specs, GPT-5.1 has the edge: bigger model tier, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.1
Input
$1.25
2.0× cheaper
Output
$10.00
1.3× cheaper
Nova Premier 1.0
Input
$2.50
Output
$12.50
GPT-5.1 is cheaper on both — 2.0× input, 1.3× output
Writing DNA
Style Comparison
Similarity
42%
Nova Premier 1.0 uses 7.7x more transitions
GPT-5.1
Nova Premier 1.0
62%Vocabulary56%
19wSentence Length39w
0.29Hedging0.90
3.5Bold4.3
7.2Lists5.9
0.00Emoji0.00
0.61Headings0.54
0.03Transitions0.21
Based on 14 + 23 text responses
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