GPT-5.1 vs Nova Premier
OpenAI vs Amazon — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 53.1)
- •GPT-5.1 is cheaper ($1.25 vs $2.50 per 1M input)
- •GPT-5.1 is faster
| GPT-5.1 | Nova Premier | |
|---|---|---|
| Intelligence index | 89 | 53.1 |
| Developer | OpenAI | Amazon |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 400,000 tokens | — |
| Input price | $1.25 / 1M | $2.50 / 1M |
| Output price | $10.00 / 1M | $12.50 / 1M |
| Speed | 115 tok/s | 40 tok/s |
| Released | November 12, 2025 | April 30, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5.1
Nova Premier
AIME 2025
94
17.3
GPQA Diamond
88.1
56.9
Humanity’s Last Exam
26.5
4.7
LiveCodeBench
86.8
31.7
MMLU-Pro
87
73.3