GPT-5.4 Pro vs LongCat-Flash-Chat: Specs & Benchmark Comparison
| Characteristic | GPT-5.4 Pro | LongCat-Flash-Chat |
|---|---|---|
| Company | OpenAI | Meituan |
| Release Date | March 1, 2026 | August 28, 2025 |
| Parameters | — | 560B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $15.00 | — |
| Output Price / 1M | $225.00 | — |
| Average Score | 0.0 | 0.9 |
Verdict
GPT-5.4 Pro leads in 1 out of 1 comparison categories.
Recency
GPT-5.4 Pro is newer: released 3/1/2026 vs 8/28/2025.
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The GPT-5.4 Pro 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 Pro or LongCat-Flash-Chat page. See also the complete list of AI model comparisons.