Claude Opus 5.5 vs DeepSeek V4.1 Flash

Short answer: DeepSeek V4.1 Flash is 22x cheaper (0.099¢ vs 2.22¢ a chat). Claude Opus 5.5 ranks higher overall (#1 vs #8). Claude Opus 5.5 wins at reasoning, coding, maths, writing, following instructions, agentic tasks. Pick DeepSeek V4.1 Flash for everyday use and Claude Opus 5.5 when quality matters most.

Claude Opus 5.5
AANTHROPICGANG
CLAUDE OPUS 5.5
ANTHROPIC GANG
CRAPGPT.LOLINDEPENDENT
AI MODEL
REVIEWS
CRAP SCORE644 SOURCES
THINKDEEPERWRITECLEANERBUILD SAFER
SAFERIDEASA MOREHUMANTOMORROW
POWER94ARENA · EPOCH · AA · CRAPGPT
Code
94
Agentic
98
Writing
97
Reasoning
94
Math
91
Value
10
BOSS★★★★★
CODER / AGENT
2.22¢ per chat · 45 chats per NZ$1
“Give me the repo.”
Every model is somebody.
— CRAPGPT.LOL —
DeepSeek V4.1 Flash
DDEEPSEEKGANG
DEEPSEEK V4.1 FLASH
DEEPSEEK GANG
CRAPGPT.LOLINDEPENDENT
AI MODEL
REVIEWS
CRAP SCORE704 SOURCES
REALTIMEINTELLIGENCEFOR AFASTERTOMORROW
SEEPLANACTFASTER
POWER72ARENA · EPOCH · AA · CRAPGPT
Reasoning
85
Instruction
82
Code
73
Math
66
Writing
61
Value
66
OPERATOR★★★★
GENERALIST / REASONER
0.099¢ per chat · 1,009 chats per NZ$1
“Polished. Dangerous. Usually right.”
Every model is somebody.
— CRAPGPT.LOL —
Claude Opus 5.5DeepSeek V4.1 Flash
Cost per chat (NZD)2.22¢0.099¢
Chats per NZ$1451,009
Overall rank#1#8
VendorAnthropicDeepSeek
SpecialityCodeGeneral
Crowd Elono votes988
Reasoning9485
Code9473
Math9166
Writing9761
Instruction9082
Agentic9841

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 5.5 or DeepSeek V4.1 Flash?

DeepSeek V4.1 Flash costs 0.099¢ per typical chat versus 2.22¢ for Claude Opus 5.5 on CrapGPT (NZD, measured token use).

Which is better, Claude Opus 5.5 or DeepSeek V4.1 Flash?

Claude Opus 5.5 ranks higher overall on CrapGPT's blended benchmark score. By category: Claude Opus 5.5 leads at reasoning, coding, maths, writing, following instructions, agentic tasks.

Can I try Claude Opus 5.5 and DeepSeek V4.1 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.

Battle them yourself Claude Opus 5.5 details · DeepSeek V4.1 Flash details