Model vs model
DeepSeek V4.1 Flash 1017 vs Kimi K3.1 Pro
Kimi K3.1 Pro scores higher on the Artificial Analysis Intelligence Index (55.1 vs 45.1), but costs 15× as much: $4 per 1M tokens blended against $0.26 for DeepSeek V4.1 Flash 1017. Pick DeepSeek V4.1 Flash 1017 for high-volume work where cost matters, and Kimi K3.1 Pro when quality matters most. The biggest gap is on Terminal-Bench 4.0 (terminal tasks), where Kimi K3.1 Pro scores 67.2 against 33.8 for DeepSeek V4.1 Flash 1017.
At a glance
Longer bar means the bigger number.
Blended price · per 1M tokens, lower is better
Intelligence Index · Artificial Analysis, higher is better
Where they sit among all 31 models
DeepSeek V4.1 Flash 1017 ranks 10th of the 30 models with an Intelligence Index, Kimi K3.1 Pro 3rd. Up and to the left is smarter for less money. Hover or tap a dot for its numbers, then click it to compare that model with DeepSeek V4.1 Flash 1017.
Which one to pick
Pick DeepSeek V4.1 Flash 1017 if
- you want the lower bill ($0.26 vs $4 per 1M tokens blended)
Pick Kimi K3.1 Pro if
- you want the higher overall score (55.1 vs 45.1)
- you care about Terminal-Bench 4.0 (terminal tasks): 67.2 vs 33.8
- you care about Humanity's Last Exam (hard reasoning): 52.5 vs 43.3
How smart is each one?
Of the 10 scores both models have, Kimi K3.1 Pro is ahead on every one.
Every intelligence score we have
Out of 100, higher is better. DeepSeek V4.1 Flash 1017 Kimi K3.1 Pro
Overall
Intelligence Index
45.155.1
By field of work
Finance & accounting
48.356.5Legal
46.455.8Economics
50.560Engineering
45.255.9Strategy & operations
52.559.4
Benchmarks
Factual knowledge · SimpleQA
42.5Kimi K3.1 Pro: not scored yet
Hard reasoning · Humanity's Last Exam
43.352.5Scientific coding · SciCode
55.960.8Terminal tasks · Terminal-Bench 4.0
33.867.2Long documents · AA-LCR
82.7 · 86.3
The specs
| Spec | DeepSeek V4.1 Flash 1017 | Kimi K3.1 Pro |
|---|---|---|
| Input price | $0.15 per 1M | $2 per 1M |
| Output price | $0.60 per 1M | $10 per 1M |
| Context window | 1.05M | 1.05M |
| Max output | 393K | 1.05M |
| Accepts | Text, Image | Text, Image |
| Open weights | Yes | Yes |
| Lab | DeepSeek | Kimi |
| Released | Oct 2026 | Oct 2026 |
| Knowledge cutoff | May 2025 | Not published |
Blended price weighs 3 parts input to 1 part output. List prices from models.dev.
Questions
Is DeepSeek V4.1 Flash 1017 or Kimi K3.1 Pro cheaper?
DeepSeek V4.1 Flash 1017 is cheaper. It charges $0.15 per 1M input tokens and $0.60 per 1M output tokens, against $2 and $10 for Kimi K3.1 Pro. Blended 3 parts input to 1 part output, that is $0.26 against $4 per 1M tokens.
Which is smarter, DeepSeek V4.1 Flash 1017 or Kimi K3.1 Pro?
Kimi K3.1 Pro scores higher on the Artificial Analysis Intelligence Index, 55.1 against 45.1 for DeepSeek V4.1 Flash 1017. The biggest differences are on Terminal-Bench 4.0 (33.8 vs 67.2) and Humanity's Last Exam (43.3 vs 52.5).
Which has the longer context window?
Both accept 1.05M tokens.
Can I compare DeepSeek V4.1 Flash 1017 and Kimi K3.1 Pro on my own prompt?
Yes. ModelCompare sends one prompt to both models at once and shows each answer side by side with what it cost. You can try it free without an account.
Related comparisons
Where the numbers come from
Intelligence Index and benchmark scores are from Artificial Analysis, at each model’s highest effort, except SimpleQA, which is from Epoch AI, and the Uncensored score, which is from the UGI Leaderboard. The hallucination test is ours: questions with one exact answer, fake evidence pushed against right answers and requests that tempt a model to name packages that don’t exist. Prices are list prices from models.dev. Example answers come from our own test runs. Updated October 23, 2026.