Z-ai model
GLM 5.3 Prime API cost calculator
GLM 5.3 Prime costs $2.80 per 1M input tokens and $8.80 per 1M output tokens on the Z-ai API, with a 1M-token context window. A typical request (2K input, 500 output tokens) costs $0.01 — about $300/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 Prime
| Workload | Tokens (in / out) | Per request | Per 1K requests |
|---|---|---|---|
| Chatbot message | 500 / 300 | $0.0040 | $4.04 |
| RAG query with context | 4,000 / 500 | $0.02 | $15.60 |
| Document summarization | 20,000 / 1,000 | $0.06 | $64.80 |
| Agent coding session | 100,000 / 5,000 | $0.32 | $324 |
GLM 5.3 Prime vs other Z-ai models
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| GLM 5.3 Prime | $2.80 | $8.80 | 1M |
| GLM 5.3 FlashX | $0.37 | $1.25 | 1.0M |
| GLM 5.3 Flash | $0.15 | $0.50 | 1.0M |
| GLM 5.3 | $0.07 | $1.40 | 1.0M |
| GLM 5.2 | $0.03 | $7 | 1.0M |
Frequently asked questions
How much does GLM 5.3 Prime cost per 1M tokens?
According to current pricing data, GLM 5.3 Prime costs $2.80 per 1M input tokens and $8.80 per 1M output tokens. Processing 1M tokens each way costs $11.60.
What does a typical API request to GLM 5.3 Prime cost?
A typical request with 2,000 input tokens and 500 output tokens costs $0.01. At 1,000 requests per day that is $10.00 daily, or about $300 per month.
What is GLM 5.3 Prime's context window?
GLM 5.3 Prime supports a 1M-token context window (1,000,000 tokens).
Does GLM 5.3 Prime support prompt caching?
Yes. Cached input tokens cost $0.56 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 Prime?
gpt-oss-20b from OpenAI is currently the cheapest comparable option at $0.02 per 1M input tokens versus $2.80 for GLM 5.3 Prime — roughly 156x cheaper on input.
Compare all current prices on the live model pricing dashboard, see GLM 5.3 Prime vs gpt-oss-20b pricing, or run GLM 5.3 Prime head-to-head against other models in the side-by-side comparison playground.
Pricing data via the OpenRouter models API.