GPT-5.1 High vs GPT-5.1 Instant: Specs & Benchmark Comparison
| Characteristic | GPT-5.1 High | GPT-5.1 Instant |
|---|---|---|
| Company | OpenAI | OpenAI |
| Release Date | November 11, 2025 | November 11, 2025 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 256K | 256K |
| Context (output) | 128K | 32K |
| Input Price / 1M | $2.00 | $0.30 |
| Output Price / 1M | $8.00 | $1.20 |
| Average Score | 0.9 | 0.9 |
| Benchmarks | ||
| AIME 2025 | 1.0 | 0.9 |
| GPQA | 0.9 | 0.9 |
Visual Benchmark Comparison
GPT-5.1 High
GPT-5.1 Instant
AIME 20251.0 vs 0.9
1.0
0.9
GPQA0.9 vs 0.9
0.9
0.9
Verdict
GPT-5.1 Instant leads in 1 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.1 High — 0.9, GPT-5.1 Instant — 0.9.
API Cost
GPT-5.1 Instant is 6.7x cheaper: input $0.30/1M vs $2.00/1M tokens.
Context Window
Same context size: 256K tokens.
Recency
Both models were released around the same time: 11/11/2025 and 11/11/2025.
More About These Models
Related Comparisons
The GPT-5.1 High and GPT-5.1 Instant comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.1 High or GPT-5.1 Instant page. See also the complete list of AI model comparisons.