Short answer: OpenAI o3 is about the same price (0.63¢ vs 0.71¢ a chat). Claude Sonnet 5 ranks higher overall (#9 vs #11). Claude Sonnet 5 wins at reasoning, coding, writing, following instructions. OpenAI o3 wins at maths, agentic tasks. Pick OpenAI o3 for everyday use and Claude Sonnet 5 when quality matters most.
AANTHROPICGANG
CLAUDE SONNET 5
ANTHROPIC GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE574 SOURCES
THINKDEEPERWRITECLEANERBUILD SAFER
SAFERIDEASA MOREHUMANTOMORROW
POWER70ARENA · EPOCH · AA · CRAPGPT
Instruction
75
Reasoning
74
Writing
72
Code
70
Agentic
69
Value
34
LIEUTENANT★★★★
GENERALIST / EXECUTOR
0.71¢ per chat · 141 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 SCORE563 SOURCES
INTELLIGENCEPEOPLETOOLSA BRIGHTERTOMORROW.
BETTERIDEASHIGHERPEOPLE
POWER66ARENA · AA · CRAPGPT
Math
82
Agentic
71
Code
64
Reasoning
61
Instruction
54
Value
38
LIEUTENANT★★★★
ANALYST / AGENT
0.63¢ per chat · 159 chats per NZ$1
“Show your working.”
Every model is somebody.
— CRAPGPT.LOL —
Claude Sonnet 5
OpenAI o3
Cost per chat (NZD)
0.71¢
0.63¢
Chats per NZ$1
141
159
Overall rank
#9
#11
Vendor
Anthropic
OpenAI
Speciality
General
Math
Reasoning
74
61
Code
70
64
Math
63
82
Writing
72
36
Instruction
75
54
Agentic
69
71
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 Sonnet 5 or OpenAI o3?
OpenAI o3 costs 0.63¢ per typical chat versus 0.71¢ for Claude Sonnet 5 on CrapGPT (NZD, measured token use).
Which is better, Claude Sonnet 5 or OpenAI o3?
Claude Sonnet 5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Sonnet 5 leads at reasoning, coding, writing, following instructions; OpenAI o3 leads at maths, agentic tasks.
Can I try Claude Sonnet 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.
