Source-tracked model comparison

DeepSeek V4 Pro vs Kimi K3: which costs less for a practical API workload?

Compare verified pricing and model limits for API pricing and workload fit across providers. The cost example uses a long-context research workload and does not assume equal model quality.

Direct cost answer: DeepSeek V4 Pro is estimated at $126.26 per month and Kimi K3 at $969.00 for 150,000 input tokens, 5,000 output tokens, and 2,000 monthly requests. DeepSeek V4 Pro is $842.74 lower under these assumptions. This does not identify a quality winner.
Current provider alternativesLong-context researchSources checked 2026-07-12 / 2026-07-17
Tracked facts

Pricing and model limits

Prices are USD per 1M tokens under each model's verified default profile.

FieldDeepSeek V4 ProKimi K3
API access providerDeepSeekKimi API
Model creatorDeepSeekMoonshot AI
API model IDdeepseek-v4-prokimi-k3
Input / 1M$0.435$3.00
Cached input / 1M$0.0036$0.30
Output / 1M$0.87$15.00
Context window1,000,000 tokens1,048,576 tokens
Maximum output384,000 tokensUnavailable tokens
Accepted inputtexttext, image
Example workload

Long-context research cost scenario

150,000 input and 5,000 output tokens per request, 2,000 monthly requests, and 10% cached input.

DeepSeek

DeepSeek V4 Pro

$126.26 / month
Input cost
$117.56
Output cost
$8.70
Per 1,000 calls
$63.13
Pricing profile
standard / cache miss
View model details
Moonshot AI

Kimi K3

$969.00 / month
Input cost
$819.00
Output cost
$150.00
Per 1,000 calls
$484.50
Pricing profile
standard
View model details

Cost result: DeepSeek V4 Pro is $842.74 lower per month for these assumptions. This is a price comparison, not a model-quality ranking.

StackLens assessment

Questions to answer before choosing

  • Which model meets the required quality threshold on representative inputs?
  • How do output length, retries, and caching change the measured cost?
  • Which provider and deployment path fit the team's operational requirements?
Workload caveat

What this estimate leaves out

Models whose tracked context window is below the scenario input are excluded from the compatible-model table.

Latency, reliability, output quality, retries, regional processing, and provider-specific tool charges can change the practical decision.