Short answer: Step 3.7 Flash is 2.1x cheaper (0.33¢ vs 0.71¢ a chat). Claude Sonnet 5 ranks higher overall (#9 vs #13). Claude Sonnet 5 wins at reasoning, coding, following instructions, agentic tasks. Pick Step 3.7 Flash 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 —
SSTEPFUNGANG
STEP 3.7 FLASH
STEPFUN GANG
CRAPGPT.LOLINDEPENDENT AI MODEL REVIEWS
CRAP SCORE582 SOURCES
STEPBYSTEP
REASONCLIMBSOLVE
POWER64AA · CRAPGPT
Reasoning
67
Instruction
74
Agentic
67
Math
52
Code
51
Value
46
SPECIALIST★★★★
REASONER / EXECUTOR
0.33¢ per chat · 299 chats per NZ$1
“Think deeper. Move carefully.”
Every model is somebody.
— CRAPGPT.LOL —
Claude Sonnet 5
Step 3.7 Flash
Cost per chat (NZD)
0.71¢
0.33¢
Chats per NZ$1
141
299
Overall rank
#9
#13
Vendor
Anthropic
StepFun
Speciality
General
Reasoning
Reasoning
74
67
Code
70
51
Instruction
75
74
Agentic
69
67
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 Step 3.7 Flash?
Step 3.7 Flash costs 0.33¢ per typical chat versus 0.71¢ for Claude Sonnet 5 on CrapGPT (NZD, measured token use).
Which is better, Claude Sonnet 5 or Step 3.7 Flash?
Claude Sonnet 5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Sonnet 5 leads at reasoning, coding, following instructions, agentic tasks.
Can I try Claude Sonnet 5 and Step 3.7 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.
