GPT-5.1 High vs LongCat-Flash-Thinking: Specs & Benchmark Comparison
| Characteristic | GPT-5.1 High | LongCat-Flash-Thinking |
|---|---|---|
| Company | OpenAI | Meituan |
| Release Date | November 11, 2025 | September 21, 2025 |
| Parameters | — | 560B |
| Multimodal | Yes | No |
| Context (input) | 256K | — |
| Context (output) | 128K | — |
| Input Price / 1M | $2.00 | — |
| Output Price / 1M | $8.00 | — |
| Average Score | 0.9 | 0.9 |
| Benchmarks | ||
| AIME 2025 | 1.0 | 0.9 |
| GPQA | 0.9 | 0.8 |
Visual Benchmark Comparison
GPT-5.1 High
LongCat-Flash-Thinking
AIME 20251.0 vs 0.9
1.0
0.9
GPQA0.9 vs 0.8
0.9
0.8
Verdict
GPT-5.1 High leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.1 High — 0.9, LongCat-Flash-Thinking — 0.9.
Recency
GPT-5.1 High is newer: released 11/11/2025 vs 9/21/2025.
More About These Models
Related Comparisons
The GPT-5.1 High and LongCat-Flash-Thinking 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 LongCat-Flash-Thinking page. See also the complete list of AI model comparisons.