Short answer: OpenAI o3 is 1.3x cheaper (0.63¢ vs 0.79¢ a chat). OpenAI o3 ranks higher overall (#11 vs #15). OpenAI o3 wins at maths, following instructions. Grok 4.7 wins at reasoning, writing. OpenAI o3 is the better all-rounder for the money, but Grok 4.7 is worth it if you mostly need reasoning, writing.


| OpenAI o3 | Grok 4.7 | |
|---|---|---|
| Cost per chat (NZD) | 0.63¢ | 0.79¢ |
| Chats per NZ$1 | 159 | 126 |
| Overall rank | #11 | #15 |
| Vendor | OpenAI | xAI |
| Speciality | Math | Reasoning |
| Reasoning | 61 | 71 |
| Code | 64 | 64 |
| Math | 82 | 47 |
| Writing | 36 | 61 |
| Instruction | 54 | 47 |
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
OpenAI o3 costs 0.63¢ per typical chat versus 0.79¢ for Grok 4.7 on CrapGPT (NZD, measured token use).
OpenAI o3 ranks higher overall on CrapGPT's blended benchmark score. By category: OpenAI o3 leads at maths, following instructions; Grok 4.7 leads at reasoning, writing.
Yes. CrapGPT's card battle sends one prompt to two models and lets you pick the winner, paying only for the two replies.