Head-to-head list prices

Kimi K3 vs DeepSeek V4 Pro API Pricing

Compare verified published API prices for Kimi K3 and DeepSeek V4 Pro. This page compares price, not output quality.

Last verified Oct 9, 2026

Quick answer

Verified Oct 9, 2026, Kimi K3 lists input at $3.00 and output at $15.00 per 1M tokens, while DeepSeek V4 Pro lists $1.32 input and $3.96 output. DeepSeek V4 Pro is 56% cheaper on input. DeepSeek V4 Pro is 73.6% cheaper on output. This is a comparison of published prices only, not output quality.

ModelInput $/1MCached input $/1MOutput $/1MSourceLast verified
Kimi K3$3.00$0.30$15.00Official sourceSep 29, 2026
DeepSeek V4 Pro$1.32$0.044$3.96Official sourceOct 9, 2026

Prices from official provider pages, verified on the date shown.

Published rates

Side-by-side API pricing

FieldKimi K3DeepSeek V4 Pro
ProviderMoonshot AIDeepSeek
Input / 1M$3.00$1.32
Cached input / 1M$0.30$0.044
Output / 1M$15.00$3.96
Context window1,048,5761M
Release dateJul 16, 2026Apr 24, 2026
Official sourceMoonshot AI pricing ↗
Last verified Sep 29, 2026
DeepSeek pricing ↗
Last verified Oct 9, 2026

Standard token prices

Which is cheaper depends on your input:output ratio

Costs below allocate 1M total tokens across each input:output ratio. They use standard prices only, without cache or Batch discounts.

Input:output ratioKimi K3DeepSeek V4 ProCheaper published price
10:1 (RAG / long context)$4.09$1.56DeepSeek V4 Pro by 61.9%
3:1 (chat)$6.00$1.98DeepSeek V4 Pro by 67%
1:1$9.00$2.64DeepSeek V4 Pro by 70.7%
1:3 (long generation)$12.00$3.30DeepSeek V4 Pro by 72.5%

Computed examples

Monthly cost for real workloads

WorkloadAssumed volumeKimi K3DeepSeek V4 ProDifference
Side project10,000 requests/month
8,000,000 input + 3,000,000 output tokens
$69.00$22.44DeepSeek V4 Pro by $46.56 (67.5%)
Customer support chatbot10,000 conversations/month
121,650,000 input + 10,800,000 output tokens
$526.95$203.35DeepSeek V4 Pro by $323.60 (61.4%)
Agent task1,000 tasks/month
12,000,000 input + 3,200,000 output tokens
$84.00$28.51DeepSeek V4 Pro by $55.49 (66.1%)

Assumptions

  • Side project: 10,000 requests per month, with 800 input and 300 output tokens per request.
  • Customer support chatbot: 10,000 conversations, with 6 replies per conversation, 600 system tokens, 90 user-message tokens, 1,000 retrieved-context tokens, 180 output tokens per reply, and 50% history carry.
  • Agent task: 1,000 tasks, with 8 calls per task and 1,500 input plus 400 output tokens per call.
  • All three rows use standard non-cached, non-batch prices and exclude retries, tools, storage, and taxes.

Provider conditions

Pricing rules that can change the answer

Kimi K3

Official pricing notes: Automatic prefix caching uses the cache-hit rate for eligible repeated prefixes of more than 256 tokens. K3 reasoning is always enabled; reasoning tokens are billed as output tokens. No current K3 Batch price is published in the canonical contract.

Full Kimi K3 pricing components

DeepSeek V4 Pro

Time-based pricing

Rates are selected by request time in UTC.

  • off peak: input $0.66, cached input $0.022, output $1.98 per 1M tokens.
  • peak: input $1.32, cached input $0.044, output $3.96 per 1M tokens.

Official pricing notes: Higher-capability DeepSeek tier with 1M context and 384K max output. DeepSeek uses time-based pricing. This estimate uses the peak rate; off-peak rates are 50% lower.

Full DeepSeek V4 Pro pricing components

Operational costs

Cheaper per token is not always cheaper per task

Retries, failed calls, fallback requests, and longer outputs can raise the cost of completing a task even when the published token price is lower. Model the effect with the LLM Retry & Fallback Cost Calculator, read the cost-per-successful-task guide, or estimate a migration with the Model Switch Cost Calculator.

Primary evidence and next steps

Common questions

Frequently asked questions

Is Kimi K3 cheaper than DeepSeek V4 Pro?

DeepSeek V4 Pro is 56% cheaper on input. DeepSeek V4 Pro is 73.6% cheaper on output. This compares published list prices, not output quality.

How much do Kimi K3 and DeepSeek V4 Pro cost for 10,000 requests a month?

At 800 input and 300 output tokens per request, Kimi K3 costs about $69.00 and DeepSeek V4 Pro costs about $22.44 at standard list prices.

Which is cheaper for input-heavy workloads like RAG?

At a 10:1 input-to-output token ratio, Kimi K3 costs $4.09 and DeepSeek V4 Pro costs $1.56 per 1M total tokens. DeepSeek V4 Pro by 61.9%.

Where do these prices come from?

The prices come from Moonshot AI and DeepSeek official pricing sources, verified on Sep 29, 2026 and Oct 9, 2026, respectively. See the AI API pricing dataset.