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MoonshotAI: Kimi K3 vs MoonshotAI: Kimi K3.1 Pro

MoonshotAI: Kimi K3.1 Pro is 1.1× cheaper for the sample workload; both have the same context window.

MetricMoonshotAI: Kimi K3MoonshotAI: Kimi K3.1 Pro
Model IDmoonshotai/kimi-k3moonshotai/kimi-k3.1-pro
Prompt price$0.192 / 1M tokens$2.00 / 1M tokens
Completion price$15.00 / 1M tokens$10.00 / 1M tokens
Context1,048,576 tokens1,048,576 tokens
Tool calling✓✓
Structured outputs✓✓
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, image, videotext, image, video
Output modalitiestexttext
Added2026-07-162026-10-23

Sample workload

Chat app: 1,000 prompt + 500 completion tokens × 100 requests per day.

CostMoonshotAI: Kimi K3MoonshotAI: Kimi K3.1 Pro
Per day$0.77$0.70
Per 30 days$23.08$21.00

Difference: $0.0692 per day and $2.08 per 30 days.

Data updated 2026-10-30