GLM 5.3

GLM 5.3 is a Z.ai model family with 3 variants (standard, FlashX and Flash) available in Quad Chat, with up to 1M tokens of context, image input, tool calling and adjustable reasoning.

GLM 5.3 at a glance

LabZ.ai
Available onFree plan
Context windowUp to 1M tokens
Max outputUp to 1M tokens
Image inputSome variants
Tool callingYes
ReasoningYes
Privacy lanePrivate or Standard, by variant

GLM 5.3 variants

ModelContextPlanAPI list price per 1M tokens (in / out)
GLM 5.31MFree plan$1.40 / $4.40
GLM 5.3 FlashX1MFree plan$0.37 / $1.25
GLM 5.3 Flash1MFree plan$0.15 / $0.50

How to use GLM 5.3 in Quad Chat

  1. Create a free account or sign in.
  2. Open the model picker and choose GLM 5.3.
  3. Ask, attach files, or compare the answer with another model.

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Frequently asked questions

Can I use GLM 5.3 for free?

Yes. GLM 5.3 is available on the Quad Chat Free plan, which needs no credit card and includes 100 monthly credits shared across every model. Larger requests use more credits, and paid plans from $8/month raise the allowance.

What is the context window of GLM 5.3?

Context windows differ by variant: GLM 5.3 1M, GLM 5.3 FlashX 1M, GLM 5.3 Flash 1M tokens, according to the model catalog Quad Chat routes through. Files, pasted text and earlier messages all count toward the window.

Does GLM 5.3 support images, tools and reasoning?

GLM 5.3 FlashX and GLM 5.3 Flash accept images as input; the other variants are text-only. It supports tool calling. It can reason before it answers, with adjustable effort (low, high and max). You can switch to another model in the same conversation at any time.

Is GLM 5.3 private in Quad Chat?

GLM 5.3 and GLM 5.3 Flash run on the Private Lane with Zero Data Retention routing. GLM 5.3 FlashX uses the Standard Lane, where the provider may retain prompts, and Quad Chat asks you to confirm first.

How much does GLM 5.3 cost in Quad Chat?

Quad Chat plans have a flat monthly price and draw usage from shared credits, not a per-token bill. The model picker shows an estimate before you send. For reference, the provider's API list price is from $0.15 to $1.40 per million input tokens across variants.

Can I compare GLM 5.3 with other models?

Yes. Send one prompt to GLM 5.3 and one or two other models, such as GLM 5.2, GLM 5.1 and GLM 5, and compare the answers side by side in the same thread. You can also switch models mid-conversation without losing your files or context.

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