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Catalogue / Z.ai / GLM-5.3-Flash

GLM-5.3-Flash

Prices and limits, each value carrying the date it was observed and the source it came from.

As of 18 September 2026, GLM-5.3-Flash costs $0.150 per million input tokens and $0.500 per million output tokens on Z.ai. Observed on Z.ai's own published price list on 18 September 2026.

Input $0.150 per 1M
Output $0.500 per 1M

What does GLM-5.3-Flash cost?

ParameterValueUnit ObservedSourceProof
Input price $0.150 USD per 1M tokens 18 September 2026
checked 18 September 2026
official API L3 69e421c7a955
Output price $0.500 USD per 1M tokens 18 September 2026
checked 18 September 2026
official API L3 69e421c7a955
Cache read price $0.030 USD per 1M tokens 18 September 2026
checked 18 September 2026
official API L3 69e421c7a955

Does the price change with the hour or the size of the request?

Yes. This provider publishes conditional rates, so the figure above is not the only price you can pay. Each rate below applies under a stated condition, taken verbatim from the provider's own catalogue.

ParameterRate AppliesObserved
Input price $0.150 list price before current discount 4 September 2026
Output price $0.500 list price before current discount 4 September 2026
Cache read price $0.030 list price before current discount 4 September 2026

We record each conditional rate as its own dated observation, so a discount window that disappears shows up as a change like any other.

How fast is GLM-5.3-Flash here?

Speed is the thing price tables leave out, and it is the thing developers complain about. These figures are measured by the Hugging Face router, not by us, on the traffic it sends to this host. They are not what you would measure calling the host yourself: neither the network path nor the load is the same.

MeasureMedian of our readings ReadingsRange seen
Time to first token 1 637 ms 17 932 to 2 425, 2 September 2026 to 18 September 2026
Output throughput 64.1 17 31 to 76, 2 September 2026 to 18 September 2026

One reading a day, and we keep every one. A single measurement of latency covers a handful of calls and moves a great deal, so we never publish the latest figure on its own: the median above is computed from our own dated readings, and the range shows how far they spread. The computation is ours; the measurements are not.

How has GLM-5.3-Flash moved?

Output price, 4 observations between 27 August 2026 and 18 September 2026. Range $0.250 to $0.500. Drawn as a step: a value holds until the next observation, we do not interpolate between them.

Has GLM-5.3-Flash changed price?

No change has been recorded since we started observing this service on 27 August 2026. We record a change only when two successive observations differ, so an empty table here means the values have held.

What does GLM-5.3-Flash cost elsewhere?

We track this model at 7 sellers. The same model rarely costs the same everywhere, and the difference is not visible from any single seller's catalogue.

Compare GLM-5.3-Flash across 7 sellers, side by side, or see every model tracked at more than one seller.

Other services from Z.ai

All Z.ai services

Where these figures come from

Source: Z.ai. Every figure on this page was read from Z.ai's own published price list, and every row above links straight back to it. We publish factual values with attribution, we do not reproduce Z.ai's content, and we send readers to them. If you publish this source and want us to stop tracking it, write to contact@bertrande.com and we will act on it without argument.

How is this page verified?

Every figure above comes from Z.ai's own published price list, which we rank as a level 3 source. We re-check it every day. Each observation stores the exact source URL and a SHA-256 fingerprint of the source content at that moment, which is what lets us prove what the source said on a given day.

The Proof column shows the first twelve characters of the SHA-256 fingerprint of the source content at the moment we read it. Hover it for the full value. It is what lets us demonstrate later what the source said on a given day, after that page has changed or vanished. The full fingerprints are in data.json.

No value on this page was produced, estimated or completed by a language model. Where we do not have a verified figure, the row is absent rather than filled in. Read the full methodology, or report an error.

Take the data, or watch this page

This page is available as data.json (including the full observation history of every parameter) and data.csv, under CC-BY-4.0, free, with attribution. See all downloads.

Want to know when this changes? Point a feed reader or a script at the Atom feed, which carries every confirmed change and is rebuilt hourly, or poll this page's data.json, where every figure carries its observation date and the fingerprint of its source. Both work today and need no address.

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