Updated March 26, 2026· Based on independent benchmark data
Claude Opus 4.5 (Reasoning) leads in intelligence with a score of 49.7 vs 46.8. Kimi K2.5 (Reasoning) is 8.3x cheaper at $0.60/1M tokens vs $5.00/1M. For speed, Claude Opus 4.5 (Reasoning) wins at 57 tok/s vs 34 tok/s.
| Metric | Claude Opus 4.5 (Reasoning) | Kimi K2.5 (Reasoning) |
|---|---|---|
| Intelligence Score | 49.7 | 46.8 |
| Coding Score | 47.8 | 39.5 |
| Math Score | 91.3 | N/A |
| Speed (tok/s) | 57 tok/s | 34 tok/s |
| Latency (TTFT) | 10.41s | 1.40s |
| Input Price / 1M tokens | $5.00 | $0.60 |
| Output Price / 1M tokens | $25 | $3.00 |
| Context Window | N/A |
Claude Opus 4.5 (Reasoning) outperforms Kimi K2.5 (Reasoning) on the intelligence index with a score of 49.7 compared to 46.8. For coding tasks, Claude Opus 4.5 (Reasoning) has the edge with a coding score of 47.8 vs 39.5.
Claude Opus 4.5 (Reasoning) generates output significantly faster at 57 tok/s compared to Kimi K2.5 (Reasoning)'s 34 tok/s, making it 1.7x faster for streaming responses. Time to first token is 1.40s for Kimi K2.5 (Reasoning) vs 10.41s for Claude Opus 4.5 (Reasoning), which affects perceived responsiveness in interactive applications.
Kimi K2.5 (Reasoning) is more affordable at $0.60/1M input tokens ($3.00/1M output), while Claude Opus 4.5 (Reasoning) costs $5.00/1M input ($25/1M output). That makes Claude Opus 4.5 (Reasoning) 8.3x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, Claude Opus 4.5 (Reasoning) would cost approximately $30.00/month vs $3.60/month for Kimi K2.5 (Reasoning) in input costs alone.
Choose Claude Opus 4.5 (Reasoning) when you need higher intelligence (49.7), stronger coding performance (47.8), faster output (57 tok/s). Choose Kimi K2.5 (Reasoning) when you need lower cost.
Claude Opus 4.5 (Reasoning) scores higher on coding benchmarks (47.8 vs 39.5), making it the better choice for programming tasks.
Kimi K2.5 (Reasoning) is cheaper at $0.60/1M input tokens vs $5.00/1M for Claude Opus 4.5 (Reasoning).
Claude Opus 4.5 (Reasoning) is faster, producing output at 57 tok/s compared to Kimi K2.5 (Reasoning)'s 34 tok/s.
No, Claude Opus 4.5 (Reasoning) does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Text |
| Output Modalities | Text | Text |
| Free Tier | No | No |
It depends on your priorities. Claude Opus 4.5 (Reasoning) scores higher on intelligence (49.7), but Kimi K2.5 (Reasoning) may be better for specific use cases like budget-conscious projects or speed-critical applications.