Claude Opus 4.5 vs LongCat-Flash-Thinking: Specs & Benchmark Comparison
| Characteristic | Claude Opus 4.5 | LongCat-Flash-Thinking |
|---|---|---|
| Company | Anthropic | Meituan |
| Release Date | November 23, 2025 | September 21, 2025 |
| Parameters | — | 560B |
| Multimodal | Yes | No |
| Context (input) | 200K | — |
| Context (output) | 64K | — |
| Input Price / 1M | $5.00 | — |
| Output Price / 1M | $25.00 | — |
| Average Score | 0.9 | 0.9 |
| Benchmarks | ||
| SWE-Bench Verified | 0.8 | 0.6 |
| TAU2 Telecom | 1.0 | 0.8 |
| TAU2 Retail | 0.9 | 0.8 |
| GPQA | 0.9 | 0.8 |
Visual Benchmark Comparison
Claude Opus 4.5
LongCat-Flash-Thinking
SWE-Bench Verified0.8 vs 0.6
0.8
0.6
TAU2 Telecom1.0 vs 0.8
1.0
0.8
TAU2 Retail0.9 vs 0.8
0.9
0.8
GPQA0.9 vs 0.8
0.9
0.8
Verdict
Claude Opus 4.5 leads in 1 out of 3 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Opus 4.5 — 0.9, LongCat-Flash-Thinking — 0.9.
Programming
On SWE-Bench, both models are nearly equal: Claude Opus 4.5 — 0.8, LongCat-Flash-Thinking — 0.6.
Recency
Claude Opus 4.5 is newer: released 11/23/2025 vs 9/21/2025.
More About These Models
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The Claude Opus 4.5 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 Claude Opus 4.5 or LongCat-Flash-Thinking page. See also the complete list of AI model comparisons.