DeepSeek V4.1 Flash vs Kimi K3
How does DeepSeek V4.1 Flash (DeepSeek) compare against Kimi K3 (Moonshot AI)? Side-by-side scores, capability ratings and pricing, plus a clear verdict.
🏆 Quick verdict
Kimi K3 comes out ahead with an AIVerso score of 92 vs 92 and an aggregate capability rating of 633 vs 595 across 7 categories. DeepSeek V4.1 Flash wins on price — lower API price (Free · API $0.30/$1.20 per 1M vs Free chat at kimi.com · API $3/$15 per 1M).
DeepSeek V4.1 Flash
by DeepSeek
Score: 92/100
PriceFree · API $0.30/$1.20 per 1M
Pricing detailsFree chat at chat.deepseek.com · API $0.30/$1.20 per 1M tokens, cheaper off-peak · Free weights (MIT license)
Context window1M
Free tierYes
API accessYes
Open sourceYes
Headline factsDeepSeek's current flagship (Oct 17 build) · AA Intelligence Index 45 · DeepSWE v1.1 77.0 · 1M context · MIT open weights
Try DeepSeek V4.1 Flash →
Full DeepSeek V4.1 Flash profile → Overall winner
Kimi K3
by Moonshot AI
Score: 92/100
PriceFree – API
Pricing detailsFree chat at kimi.com · API $3/$15 per 1M
Context window1M
Free tierYes
API accessYes
Open sourceYes
Headline facts2.8T params · AA Intelligence Index 44 · #1 Arena Frontend Code · 1M context · open-weight
Try Kimi K3 →
Full Kimi K3 profile →📊 Capability ratings
AIVerso capability ratings (0–100) per category — an editorial summary informed by public benchmark results. Higher is better.
Category
DeepSeek V4.1 Flash
Kimi K3
Math & Logice.g. AIME, MATH-500
90
94
Programminge.g. SWE-bench, LiveCodeBench
81
90
Reasoninge.g. GPQA, ARC
85
91
Knowledgee.g. MMLU-Pro
85
89
Long Contexte.g. MRCR, needle tests
92
92
Instruction Followinge.g. IFEval
86
91
Agent Capabilitye.g. Terminal-Bench, tool use
76
86
Why DeepSeek V4.1 Flash
Lower API price (Free · API $0.30/$1.20 per 1M vs Free chat at kimi.com · API $3/$15 per 1M)
DeepSeek's current flagship (Oct 17 build)
AA Intelligence Index 45
Why Kimi K3
Leads on Math & Logic (94 vs 90)
Leads on Programming (90 vs 81)
Leads on Reasoning (91 vs 85)
Leads on Knowledge (89 vs 85)
Leads on Instruction Following (91 vs 86)
Leads on Agent Capability (86 vs 76)
2.8T params
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❓ Frequently Asked Questions
Which is better: DeepSeek V4.1 Flash or Kimi K3?
Kimi K3 has the higher AIVerso score (92 vs 92). The better choice still depends on your use case — DeepSeek V4.1 Flash is the cheaper option.
How much does DeepSeek V4.1 Flash cost compared to Kimi K3?
DeepSeek V4.1 Flash: Free · API $0.30/$1.20 per 1M (Free chat at chat.deepseek.com · API $0.30/$1.20 per 1M tokens, cheaper off-peak · Free weights (MIT license)). Kimi K3: Free – API (Free chat at kimi.com · API $3/$15 per 1M). Both have a free tier.
What context window does each support?
DeepSeek V4.1 Flash: 1M tokens. Kimi K3: 1M tokens. The context window determines how much text, code or chat history a model can process at once.
Are DeepSeek V4.1 Flash and Kimi K3 open source?
DeepSeek V4.1 Flash is open source / open weights. Kimi K3 is open source / open weights.
How we compare: Scores and capability ratings are based on public benchmarks and provider documentation — not on commission rates. Last updated: October 23, 2026.