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MoonshotAI: Kimi K3.1 Pro vs Qwen: Qwen3.8 Max Prime

MoonshotAI: Kimi K3.1 Pro is 1.4× cheaper for the sample workload; MoonshotAI: Kimi K3.1 Pro has the larger context window.

MetricMoonshotAI: Kimi K3.1 ProQwen: Qwen3.8 Max Prime
Model IDmoonshotai/kimi-k3.1-proqwen/qwen3.8-max-prime
Prompt price$2.00 / 1M tokens$4.00 / 1M tokens
Completion price$10.00 / 1M tokens$12.00 / 1M tokens
Context1,048,576 tokens1,000,000 tokens
Tool calling✓✓
Structured outputs✓✓
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, image, videotext, image, video
Output modalitiestexttext
Added2026-10-232026-09-23

Sample workload

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

CostMoonshotAI: Kimi K3.1 ProQwen: Qwen3.8 Max Prime
Per day$0.70$1.00
Per 30 days$21.00$30.00

Difference: $0.30 per day and $9.00 per 30 days.

Data updated 2026-10-30