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Z.ai: GLM 5.3 API Pricing
Z.ai: GLM 5.3 costs $1.40 per 1M input tokens and $4.40 per 1M output tokens (cache reads: $0.260). Context window: 1.0M. Prices verified 2026-08-23 · source
Input / 1M tokens
$1.40
Output / 1M tokens
$4.40
Context window
1.0M
Max output
131K
What would Z.ai: GLM 5.3 cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $28.80 |
| Coding agent | 5,000 | 8,000 / 2,000 | $100.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $234.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $64.80 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About Z.ai: GLM 5.3
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...