Short answer: OpenAI o3 is 5.3x cheaper (0.63¢ vs 3.35¢ a chat). Claude Opus 5 ranks higher overall (#2 vs #5). Claude Opus 5 wins at reasoning, coding, agentic tasks. OpenAI o3 wins at maths. Pick OpenAI o3 for everyday use and Claude Opus 5 when quality matters most.
AANTHROPICGANG
CLAUDE OPUS 5
ANTHROPIC GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE593 SOURCES
THINKDEEPERWRITECLEANERBUILD SAFER
SAFERIDEASA MOREHUMANTOMORROW
POWER87EPOCH · AA · CRAPGPT
Agentic
92
Writing
90
Reasoning
89
Code
87
Math
81
Value
6
LIEUTENANT★★★★
GENERALIST / AGENT
3.35¢ per chat · 29 chats per NZ$1
“Ask me anything. Pay less.”
Every model is somebody.
— CRAPGPT.LOL —
OOPENAIGANG
OPENAI O3
OPENAI GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE672 SOURCES
INTELLIGENCEPEOPLETOOLSA BRIGHTERTOMORROW.
BETTERIDEASHIGHERPEOPLE
POWER82AA · CRAPGPT
Math
89
Code
83
Instruction
79
Reasoning
73
Agentic
71
Value
38
LIEUTENANT★★★★
ANALYST / CODER
0.63¢ per chat · 159 chats per NZ$1
“Show your working.”
Every model is somebody.
— CRAPGPT.LOL —
Claude Opus 5
OpenAI o3
Cost per chat (NZD)
3.35¢
0.63¢
Chats per NZ$1
29
159
Overall rank
#2
#5
Vendor
Anthropic
OpenAI
Speciality
General
Math
Reasoning
89
73
Code
87
83
Math
81
89
Agentic
92
71
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, Claude Opus 5 or OpenAI o3?
OpenAI o3 costs 0.63¢ per typical chat versus 3.35¢ for Claude Opus 5 on CrapGPT (NZD, measured token use).
Which is better, Claude Opus 5 or OpenAI o3?
Claude Opus 5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Opus 5 leads at reasoning, coding, agentic tasks; OpenAI o3 leads at maths.
Can I try Claude Opus 5 and OpenAI o3 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.
