Short answer: GPT-6 Luna is 4.0x cheaper (0.013¢ vs 0.052¢ a chat). GLM 5.3 Flash ranks higher overall (#16 vs #17). GPT-6 Luna wins at maths. GLM 5.3 Flash wins at reasoning, coding, agentic tasks. Pick GPT-6 Luna for everyday use and GLM 5.3 Flash when quality matters most.
OOPENAIGANG
GPT-6 LUNA
OPENAI GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE713 SOURCES
INTELLIGENCEPEOPLETOOLSA BRIGHTERTOMORROW.
BETTERIDEASHIGHERPEOPLE
POWER61EPOCH · AA · CRAPGPT
Reasoning
60
Math
73
Code
64
Instruction
54
Agentic
36
Value
90
SPECIALIST★★★
REASONER / ANALYST
0.013¢ per chat · 7,792 chats per NZ$1
“Deep thought. Low drama.”
Every model is somebody.
— CRAPGPT.LOL —
ZZ.AIGANG
GLM 5.3 FLASH
Z.AI GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE643 SOURCES
PRECISECALMAHEAD
REASONATSCALE
POWER61EPOCH · AA · CRAPGPT
Reasoning
67
Agentic
77
Code
65
Instruction
54
Math
37
Value
70
SPECIALIST★★★
REASONER / AGENT
0.052¢ per chat · 1,927 chats per NZ$1
“Deep thought. Low drama.”
Every model is somebody.
— CRAPGPT.LOL —
GPT-6 Luna
GLM 5.3 Flash
Cost per chat (NZD)
0.013¢
0.052¢
Chats per NZ$1
7,792
1,927
Overall rank
#17
#16
Vendor
OpenAI
Z.ai
Speciality
Reasoning
Reasoning
Crowd Elo
no votes
1012
Reasoning
60
67
Code
64
65
Math
73
37
Agentic
36
77
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-13.
FAQ
Which is cheaper, GPT-6 Luna or GLM 5.3 Flash?
GPT-6 Luna costs 0.013¢ per typical chat versus 0.052¢ for GLM 5.3 Flash on CrapGPT (NZD, measured token use).
Which is better, GPT-6 Luna or GLM 5.3 Flash?
GLM 5.3 Flash ranks higher overall on CrapGPT's blended benchmark score. By category: GPT-6 Luna leads at maths; GLM 5.3 Flash leads at reasoning, coding, agentic tasks.
Can I try GPT-6 Luna and GLM 5.3 Flash side by side?
Yes. CrapGPT's card battle sends one prompt to two models and lets you pick the winner, paying only for the two replies.
