Short answer: GLM 5.3 Flash is 11x cheaper (0.040¢ vs 0.43¢ a chat). Gemini 3.8 Flash ranks higher overall (#4 vs #10). Gemini 3.8 Flash wins at reasoning, coding, maths, writing, following instructions, agentic tasks. Pick GLM 5.3 Flash for everyday use and Gemini 3.8 Flash when quality matters most.


| Gemini 3.8 Flash | GLM 5.3 Flash | |
|---|---|---|
| Cost per chat (NZD) | 0.43¢ | 0.040¢ |
| Chats per NZ$1 | 232 | 2,505 |
| Overall rank | #4 | #10 |
| Vendor | Z.ai | |
| Speciality | General | Reasoning |
| Crowd Elo | no votes | 1012 |
| Reasoning | 91 | 73 |
| Code | 78 | 70 |
| Math | 69 | 52 |
| Writing | 88 | 56 |
| Instruction | 85 | 78 |
| Agentic | 85 | 77 |
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
GLM 5.3 Flash costs 0.040¢ per typical chat versus 0.43¢ for Gemini 3.8 Flash on CrapGPT (NZD, measured token use).
Gemini 3.8 Flash ranks higher overall on CrapGPT's blended benchmark score. By category: Gemini 3.8 Flash 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 Gemini 3.8 Flash details · GLM 5.3 Flash details