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Mistral: Mistral Medium 3.5 vs Z.ai: GLM 5.3 Prime

Mistral: Mistral Medium 3.5 is 1.4× cheaper for the sample workload; Z.ai: GLM 5.3 Prime has the larger context window.

MetricMistral: Mistral Medium 3.5Z.ai: GLM 5.3 Prime
Model IDmistralai/mistral-medium-3-5z-ai/glm-5.3-prime
Prompt price$1.50 / 1M tokens$2.80 / 1M tokens
Completion price$7.50 / 1M tokens$8.80 / 1M tokens
Context262,144 tokens1,000,000 tokens
Tool calling✓✓
Structured outputs✓–
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, image, filetext
Output modalitiestexttext
Added2026-04-302026-09-23

Sample workload

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

CostMistral: Mistral Medium 3.5Z.ai: GLM 5.3 Prime
Per day$0.53$0.72
Per 30 days$15.75$21.60

Difference: $0.19 per day and $5.85 per 30 days.

Data updated 2026-10-30