Kimi K3.1 Pro vs DeepSeek V4 Pro
Official Kimi and DeepSeek API prices and LMArena scores, checked 2026-10-29. Add up to 2 more models to compare 4.
DeepSeek V4 Pro costs less; Kimi K3.1 Pro wins more LMArena tasks.
DeepSeek V4 Pro is 1.5x cheaper on input and 2.5x cheaper on output. Kimi K3.1 Pro scores 57 points higher for coding. Across 1 shared LMArena task, Kimi K3.1 Pro leads 1 to 0. A medium month (20M input + 5M output tokens) costs $90 on Kimi K3.1 Pro and $46.20 on DeepSeek V4 Pro.
- Pick Kimi K3.1 Pro if you care most about coding (+57).
- Pick DeepSeek V4 Pro if you want the lower bill ($46.20 vs $90 for a medium month) or you reuse long prompts (cached input $0.044 vs $0.20).
Medium: 20M input + 5M output tokens a month at list price (short-context rate, no caching or batch discounts).
Marked side is better: lower for prices, higher for context and scores. Bars are scaled to the larger of the two.
| Spec | Kimi K3.1 Pro | DeepSeek V4 Pro |
|---|---|---|
| Price per 1M tokens | ||
| Input | $2 | $1.32 |
| Cached input | $0.20 | $0.044 |
| Output | $10 | $3.96 |
| Blend 3:1 | $4 | $1.98 |
| Sample month, medium | $90 | $46.20 |
| Context | ||
| Context window | 1.04858M tokens | 1M tokens |
| Quality (LMArena, out of 100) | ||
| Coding | 57/100 #6 of 50 | 0/100 #38 of 50 |
| Chat | Not ranked | 0/100 #26 of 51 |
| Creative writing | Not ranked | 1/100 #19 of 51 |
| Roleplay and characters | Not ranked | 0/100 #20 of 51 |
| Reasoning and math | Not ranked | 0/100 #38 of 51 |
| Vision | Not ranked | Not ranked |
| Long documents | Not ranked | Not ranked |
| Cheap bulk and agents | Not ranked | Not ranked |
| Details | ||
| Provider | Kimi | DeepSeek |
| API model id | kimi-k3.1-pro | deepseek-v4-pro |
| Notes | Flat price across the 1M window. Cache writes cost $2 (5-minute) or $4 (1-hour). | Peak rate. Off-peak is half price. |
| Sources | ||
| Last checked | 2026-10-29 | 2026-10-29 |
| Official pricing | Kimi pricing | DeepSeek pricing |
Plans from data checked hourly against each vendor's official pricing page. Vendors state limits in different units, so we quote them as published. Team and enterprise plans are per seat.
API prices in USD per 1M tokens from each provider's official pricing page. Blend 3:1 = (3 x input + output) / 4. Sample month = stated input and output tokens at the list price, no caching. Quality: relative score out of 100 on each LMArena leaderboard (100 = top model we price on that board, n/a = not ranked there), data licensed CC BY 4.0. See how we pick.
Where each one ranks on LMArena
Relative score out of 100 on each leaderboard (100 = the top model we price there), with the rank among the models from our API price table that appear on that board.
- Coding (Code Arena): Kimi K3.1 Pro #6 of 50 (57/100), DeepSeek V4 Pro #38 of 50 (0/100)
- Chat (Text Arena): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro #26 of 51 (0/100)
- Creative writing (Text Arena creative writing): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro #19 of 51 (1/100)
- Roleplay and characters (Text Arena multi-turn): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro #20 of 51 (0/100)
- Reasoning and math (Text Arena math): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro #38 of 51 (0/100)
- Vision (Vision Arena): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro not ranked
- Long documents (Document Arena): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro not ranked
- Cheap bulk and agents (Agent Arena): Kimi K3.1 Pro not ranked, DeepSeek V4 Pro not ranked
Pricing details from the official pages
Kimi K3.1 Pro lists $2 input, $10 output, $0.20 cached input per 1M tokens on Kimi pricing. DeepSeek V4 Pro lists $1.32 input, $3.96 output, $0.044 cached input per 1M tokens on DeepSeek pricing. Prices checked 2026-10-29.
- Kimi K3.1 Pro: Flat price across the 1M window. Cache writes cost $2 (5-minute) or $4 (1-hour).
- DeepSeek V4 Pro: Peak rate. Off-peak is half price.
Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $9 vs $4.62. Medium (20M input + 5M output tokens): $90 vs $46.20. Heavy (200M input + 50M output tokens): $900 vs $462.
FAQ
Is Kimi K3.1 Pro cheaper than DeepSeek V4 Pro?
Kimi K3.1 Pro costs $2 input and $10 output per 1M tokens; DeepSeek V4 Pro costs $1.32 and $3.96. For a medium month (20M input + 5M output tokens) DeepSeek V4 Pro is cheaper: $46.20 vs $90.
Which is better for coding, Kimi K3.1 Pro or DeepSeek V4 Pro?
On LMArena's Code Arena Kimi K3.1 Pro scores 57/100 (#6 of 50) and DeepSeek V4 Pro 0/100 (#38 of 50), so Kimi K3.1 Pro is ahead by 57 points.
Which has the bigger context window?
Kimi K3.1 Pro: 1.04858M tokens. DeepSeek V4 Pro: 1M tokens.
How much do Kimi K3.1 Pro and DeepSeek V4 Pro cost per month?
Light (2M input + 0.5M output tokens): $9 vs $4.62. Medium (20M input + 5M output tokens): $90 vs $46.20. Heavy (200M input + 50M output tokens): $900 vs $462. Pick your own token counts in the plan vs API calculator.
Where do these numbers come from?
Prices come from each provider's official pricing page, checked daily. Quality is the relative score on the LMArena leaderboard dataset, licensed CC BY 4.0. Where a model is not ranked we show n/a.
Sources
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