Z-ai model
GLM 5.3 Flash API cost calculator
GLM 5.3 Flash costs $0.15 per 1M input tokens and $0.50 per 1M output tokens on the Z-ai API, with a 1.0M-token context window. A typical request (2K input, 500 output tokens) costs $0.0006 — about $16.50/month at 1,000 requests per day. Use the calculator below to model your exact workload.
Find me a cheaper modelWhat real workloads cost on GLM 5.3 Flash
| Workload | Tokens (in / out) | Per request | Per 1K requests |
|---|---|---|---|
| Chatbot message | 500 / 300 | $0.0002 | $0.23 |
| RAG query with context | 4,000 / 500 | $0.0008 | $0.85 |
| Document summarization | 20,000 / 1,000 | $0.0035 | $3.50 |
| Agent coding session | 100,000 / 5,000 | $0.02 | $17.50 |
GLM 5.3 Flash vs other Z-ai models
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| GLM 5.3 Flash | $0.15 | $0.50 | 1.0M |
| GLM 5.3 Prime | $2.80 | $8.80 | 1M |
| GLM 5.3 FlashX | $0.37 | $1.25 | 1.0M |
| GLM 5.3 | $1.40 | $4.40 | 1.0M |
| GLM 5.2 | $0.05 | $8 | 1.0M |
Frequently asked questions
How much does GLM 5.3 Flash cost per 1M tokens?
According to current pricing data, GLM 5.3 Flash costs $0.15 per 1M input tokens and $0.50 per 1M output tokens. Processing 1M tokens each way costs $0.65.
What does a typical API request to GLM 5.3 Flash cost?
A typical request with 2,000 input tokens and 500 output tokens costs $0.0006. At 1,000 requests per day that is $0.55 daily, or about $16.50 per month.
What is GLM 5.3 Flash's context window?
GLM 5.3 Flash supports a 1.0M-token context window (1,048,576 tokens).
Does GLM 5.3 Flash support prompt caching?
Yes. Cached input tokens cost $0.03 per 1M — a 80% discount versus the standard input rate, which matters for agents and chat apps that resend the same system prompt.
What is a cheaper alternative to GLM 5.3 Flash?
DeepSeek Flash Latest from ~deepseek is currently the cheapest comparable option at $0.00 per 1M input tokens versus $0.15 for GLM 5.3 Flash — roughly 50x cheaper on input.
Compare all current prices on the live model pricing dashboard, see GLM 5.3 Flash vs DeepSeek Flash Latest pricing, or run GLM 5.3 Flash head-to-head against other models in the side-by-side comparison playground.
Pricing data via the OpenRouter models API.