DeepSeek V4.1 Flash vs Kimi K3.1 Pro
Short answer
DeepSeek V4.1 Flash is about 15x cheaper than Kimi K3.1 Pro for a typical 3:1 input-to-output token mix ($0.26 vs $4 per 1M tokens).
Prices updated Nov 1, 2026 (APIpulse, CC BY 4.0) · Benchmarks: ARC Prize, Vals.ai · all models
| DeepSeek V4.1 Flashcheaper | Kimi K3.1 Pro | |
|---|---|---|
| Provider | DeepSeek | Moonshot |
| Input / 1M tokens | $0.15 | $2 |
| Output / 1M tokens | $0.60 | $10 |
| Blended (3:1) / 1M | $0.26 | $4 |
| Context window | 1M | 1M |
| ARC-AGI-2 | 78.1% (Max) | — |
| SWE-bench Verified | — | — |
API cost calculator
Enter your monthly usage in millions of tokens (1M tokens ≈ 750,000 words).
DeepSeek V4.1 Flashcheapest$2.70 / month$32.40 / year
Kimi K3.1 Pro$40 / month$480 / year
Standard rates; batch processing and prompt caching can lower the bill.
Frequently asked questions
Which is cheaper, DeepSeek V4.1 Flash or Kimi K3.1 Pro?
DeepSeek V4.1 Flash is about 15x cheaper than Kimi K3.1 Pro for a typical 3:1 input-to-output token mix ($0.26 vs $4 per 1M tokens)..
How much do DeepSeek V4.1 Flash and Kimi K3.1 Pro cost per month?
For 10M input and 2M output tokens a month: DeepSeek V4.1 Flash costs $2.70 and Kimi K3.1 Pro costs $40.
More: DeepSeek V4.1 Flash pricing · Kimi K3.1 Pro pricing · all API prices
Benchmarks updated Nov 2, 2026.