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MoonshotAI: Kimi K3 vs Z.ai: GLM 5.3 Prime

Z.ai: GLM 5.3 Prime is 1.1× cheaper for the sample workload; MoonshotAI: Kimi K3 has the larger context window.

MetricMoonshotAI: Kimi K3Z.ai: GLM 5.3 Prime
Model IDmoonshotai/kimi-k3z-ai/glm-5.3-prime
Prompt price$0.20 / 1M tokens$2.80 / 1M tokens
Completion price$16.00 / 1M tokens$8.80 / 1M tokens
Context1,048,576 tokens1,000,000 tokens
Tool calling✓✓
Structured outputs✓–
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, image, videotext
Output modalitiestexttext
Added2026-07-162026-09-23

Sample workload

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

CostMoonshotAI: Kimi K3Z.ai: GLM 5.3 Prime
Per day$0.82$0.72
Per 30 days$24.60$21.60

Difference: $0.10 per day and $3.00 per 30 days.

Data updated 2026-11-04