GPT-5.4 vs LongCat-Flash-Chat: Specs & Benchmark Comparison
| Characteristic | GPT-5.4 | LongCat-Flash-Chat |
|---|---|---|
| Company | OpenAI | Meituan |
| Release Date | March 5, 2026 | August 28, 2025 |
| Parameters | — | 560B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $2.50 | — |
| Output Price / 1M | $15.00 | — |
| Average Score | 0.9 | 0.9 |
| Benchmarks | ||
| GPQA | 0.9 | 0.7 |
Visual Benchmark Comparison
GPT-5.4
LongCat-Flash-Chat
GPQA0.9 vs 0.7
0.9
0.7
Verdict
GPT-5.4 leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.4 — 0.9, LongCat-Flash-Chat — 0.9.
Recency
GPT-5.4 is newer: released 3/5/2026 vs 8/28/2025.
More About These Models
Related Comparisons
The GPT-5.4 and LongCat-Flash-Chat comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.4 or LongCat-Flash-Chat page. See also the complete list of AI model comparisons.