Apriel-v1.5-15B-Thinker vs GPT-5.1
ServiceNow vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 77.2)
- •Apriel-v1.5-15B-Thinker is cheaper ($0.00 vs $1.25 per 1M input)
| Apriel-v1.5-15B-Thinker | GPT-5.1 | |
|---|---|---|
| Intelligence index | 77.2 | 89 |
| Developer | ServiceNow | OpenAI |
| Type | LLM | LLM |
| Access | — | API only |
| Context window | — | 400,000 tokens |
| Input price | $0.00 / 1M | $1.25 / 1M |
| Output price | $0.00 / 1M | $10.00 / 1M |
| Speed | — | 115 tok/s |
| Released | September 30, 2025 | November 12, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Apriel-v1.5-15B-Thinker
GPT-5.1
AIME 2025
87.5
94
GPQA Diamond
71.3
88.1
Humanity’s Last Exam
12
26.5
LiveCodeBench
72.8
86.8
MMLU-Pro
77.3
87