Comparison · Z.ai
GLM 5.3 vs GLM 5.3 Prime
Listed API prices of GLM 5.3 and GLM 5.3 Prime turned into the cost of the same three standard tasks. Output quality, speed and answer length are not compared.
Calculated impact cost per task and per month
For an L2 task (deep analysis over a 50,000-token document, 3 steps), GLM 5.3 costs $0.236 and GLM 5.3 Prime $0.472 at the prices listed in the United States on , so GLM 5.3 is 50.0 % less than GLM 5.3 Prime, counting visible output only, without cache discounts or hidden reasoning.
| Task | GLM 5.3, per task | GLM 5.3 Prime, per task | GLM 5.3, per month | GLM 5.3 Prime, per month | GLM 5.3 vs GLM 5.3 Prime, per task |
|---|---|---|---|---|---|
| L1Micro-task (classification or strict JSON extraction) | $0.0030per L1 task | $0.0060per L1 task | $43.51per month | $87.02per month | −50.0 % |
| L2Deep analysis over a 50,000-token document | $0.236per L2 task | $0.472per L2 task | $3,442.68per month | $6,885.36per month | −50.0 % |
| L3Agentic coding loop, 15 steps | $1.88per L3 task | $3.76per L3 task | $27,466.98per month | $54,933.96per month | −50.0 % |
Calculated Per month: 20 tasks an hour around the clock, 730 hours.
Prices USD per 1M tokens
| Price | GLM 5.3 | GLM 5.3 Prime |
|---|---|---|
| Input, per 1M tokens | $1.40 | $2.80 |
| Output, per 1M tokens | $4.40 | $8.80 |
| Price from | Provider's price list · source page Published | OpenRouter · source page (data) Published |
| Read | · the United States | · the United States |
| Context window | 1,048,576 tokens | 1,000,000 tokens |
What can I use it for? six common tasks, our data checks
Quality on your task: not measured by Measured Lab yet.
| Task | GLM 5.3 | GLM 5.3 Prime |
|---|---|---|
| Answer customer messages | Fits on price and context | — |
| Pull data from invoices and documents with strict JSON and page images | Not confirmed: reads text only, per the OpenRouter listing | — |
| Summarize documents and meetings | Fits on price and context | — |
| Translate content | Fits on price and context | — |
| Chat assistant on your website | Fits on price and context | — |
| Write and review code with tool calls | Fits on price and context | — |
| Tasks it fits | 5 of 6 | — |
Checks of our data for six common tasks: a published price, a context window and answer length for the task and, where the task needs them, strict JSON output, page images and tool calls; prices, cost a month and terms for each model on its model card. GLM 5.3 Prime is not in the model picker. Compare models for your own task in the model picker.