Short answer: GLM 5.3 Flash is 84x cheaper (0.040¢ vs 3.35¢ a chat). Claude Opus 5 ranks higher overall (#2 vs #10). Claude Opus 5 wins at reasoning, coding, maths, writing, following instructions, agentic tasks. Pick GLM 5.3 Flash for everyday use and Claude Opus 5 when quality matters most.
AANTHROPICGANG
CLAUDE OPUS 5
ANTHROPIC GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE604 SOURCES
THINKDEEPERWRITECLEANERBUILD SAFER
SAFERIDEASA MOREHUMANTOMORROW
POWER89ARENA · EPOCH · AA · CRAPGPT
Writing
93
Agentic
92
Reasoning
90
Code
88
Instruction
88
Value
6
LIEUTENANT★★★★★
GENERALIST / WRITER
3.35¢ per chat · 29 chats per NZ$1
“Ask me anything. Pay less.”
Every model is somebody.
— CRAPGPT.LOL —
ZZ.AIGANG
GLM 5.3 FLASH
Z.AI GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE714 SOURCES
PRECISECALMAHEAD
REASONATSCALE
POWER68ARENA · EPOCH · AA · CRAPGPT
Reasoning
73
Instruction
78
Agentic
77
Code
70
Writing
56
Value
78
SPECIALIST★★★★
REASONER / EXECUTOR
0.040¢ per chat · 2,505 chats per NZ$1
“Deep thought. Low drama.”
Every model is somebody.
— CRAPGPT.LOL —
Claude Opus 5
GLM 5.3 Flash
Cost per chat (NZD)
3.35¢
0.040¢
Chats per NZ$1
29
2,505
Overall rank
#2
#10
Vendor
Anthropic
Z.ai
Speciality
General
Reasoning
Crowd Elo
no votes
1012
Reasoning
90
73
Code
88
70
Math
86
52
Writing
93
56
Instruction
88
78
Agentic
92
77
Scores are 0 to 100 percentiles blending LMArena, Epoch AI, Artificial Analysis and CrapGPT's own tests. Updated 2026-10-11.
FAQ
Which is cheaper, Claude Opus 5 or GLM 5.3 Flash?
GLM 5.3 Flash costs 0.040¢ per typical chat versus 3.35¢ for Claude Opus 5 on CrapGPT (NZD, measured token use).
Which is better, Claude Opus 5 or GLM 5.3 Flash?
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.
Can I try Claude Opus 5 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.
