Short answer: Kimi K3 is 2.4x cheaper (0.91¢ vs 2.22¢ a chat). Claude Opus 5.5 ranks higher overall (#1 vs #6). Claude Opus 5.5 wins at reasoning, coding, maths, writing, following instructions, agentic tasks. Pick Kimi K3 for everyday use and Claude Opus 5.5 when quality matters most.


| Claude Opus 5.5 | Kimi K3 | |
|---|---|---|
| Cost per chat (NZD) | 2.22¢ | 0.91¢ |
| Chats per NZ$1 | 45 | 109 |
| Overall rank | #1 | #6 |
| Vendor | Anthropic | Moonshot AI |
| Speciality | Code | Reasoning |
| Reasoning | 94 | 80 |
| Code | 94 | 80 |
| Math | 91 | 78 |
| Writing | 97 | 70 |
| Instruction | 90 | 84 |
| Agentic | 98 | 69 |
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
Kimi K3 costs 0.91¢ per typical chat versus 2.22¢ for Claude Opus 5.5 on CrapGPT (NZD, measured token use).
Claude Opus 5.5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Opus 5.5 leads at reasoning, coding, maths, writing, following instructions, agentic tasks.
Yes. CrapGPT's card battle sends one prompt to two models and lets you pick the winner, paying only for the two replies.
Battle them yourself Claude Opus 5.5 details · Kimi K3 details