Short answer: GPT-6 Luna is 1017x cheaper (0.013¢ vs 13.05¢ a chat). GPT-6 Luna ranks higher overall (#16 vs #18). GPT-6 Luna wins at reasoning, coding, maths, following instructions. Fugu Ultra v2 wins at writing. GPT-6 Luna is the better all-rounder for the money, but Fugu Ultra v2 is worth it if you mostly need writing.


| GPT-6 Luna | Fugu Ultra v2 | |
|---|---|---|
| Cost per chat (NZD) | 0.013¢ | 13.05¢ |
| Chats per NZ$1 | 7,792 | 7 |
| Overall rank | #16 | #18 |
| Vendor | OpenAI | Sakana AI |
| Speciality | Reasoning | Code |
| Reasoning | 61 | 56 |
| Code | 67 | 50 |
| Math | 70 | 52 |
| Writing | 49 | 90 |
| Instruction | 60 | 54 |
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
GPT-6 Luna costs 0.013¢ per typical chat versus 13.05¢ for Fugu Ultra v2 on CrapGPT (NZD, measured token use).
GPT-6 Luna ranks higher overall on CrapGPT's blended benchmark score. By category: GPT-6 Luna leads at reasoning, coding, maths, following instructions; Fugu Ultra v2 leads at writing.
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 GPT-6 Luna details · Fugu Ultra v2 details