Gemini Diffusion vs GPT-5.1
Google vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 30.2)
| Gemini Diffusion | GPT-5.1 | |
|---|---|---|
| Intelligence index | 30.2 | 89 |
| Developer | OpenAI | |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | — | 400,000 tokens |
| Input price | — | $1.25 / 1M |
| Output price | — | $10.00 / 1M |
| Speed | — | 115 tok/s |
| Released | May 20, 2025 | November 12, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Gemini Diffusion
GPT-5.1
AIME 2025
23.3
94
GPQA Diamond
40.4
88.1
LiveCodeBench
30.9
86.8