Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | DeepSeek V3.1 Terminus (Reasoning) | Kimi K2.5 (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $1.635 | $0.54 |
| Output ($/M tokens) | $2.75 | $2.925 |
Data from Artificial Analysis API — 12 benchmarks
Kimi K2.5 (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $1.14/M tokens vs $1.91/M for DeepSeek V3.1 Terminus (Reasoning).
Kimi K2.5 (Reasoning) wins 7 out of 12 benchmarks compared to 4 for DeepSeek V3.1 Terminus (Reasoning). See the detailed benchmark chart above for per-category results.
Kimi K2.5 (Reasoning) generates tokens faster at 49 tok/s vs 0 tok/s. DeepSeek V3.1 Terminus (Reasoning) also has lower time-to-first-token (0.00s vs 1.14s).
Choose based on your priorities: Kimi K2.5 (Reasoning) for lower cost, Kimi K2.5 (Reasoning) for stronger benchmark performance, and Kimi K2.5 (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.