Short answer: DeepSeek V4.1 Flash is 34x cheaper (0.099¢ vs 3.35¢ a chat). Claude Opus 5 ranks higher overall (#2 vs #8). Claude Opus 5 wins at reasoning, coding, maths, writing, following instructions, agentic tasks. Pick DeepSeek V4.1 Flash for everyday use and Claude Opus 5 when quality matters most.


| Claude Opus 5 | DeepSeek V4.1 Flash | |
|---|---|---|
| Cost per chat (NZD) | 3.35¢ | 0.099¢ |
| Chats per NZ$1 | 29 | 1,009 |
| Overall rank | #2 | #8 |
| Vendor | Anthropic | DeepSeek |
| Speciality | General | General |
| Crowd Elo | no votes | 988 |
| Reasoning | 90 | 85 |
| Code | 88 | 73 |
| Math | 86 | 66 |
| Writing | 93 | 61 |
| Instruction | 88 | 82 |
| Agentic | 92 | 41 |
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
DeepSeek V4.1 Flash costs 0.099¢ per typical chat versus 3.35¢ for Claude Opus 5 on CrapGPT (NZD, measured token use).
Claude Opus 5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Opus 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 details · DeepSeek V4.1 Flash details