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AI model · Zhipu (Z.ai)

GLM-5.3

Zhipu released GLM-5.3 on 18 Aug 2026. API list price: $1.40 per million input tokens and $4.40 per million output tokens.

The record

each fact with its source

Released

18 Aug 2026

Successor to GLM-5.2: to GLM Coding Plan subscribers on 14 Aug, on the API from 18 Aug The lab’s announcement

API list price, per million tokens

$1.40 in $4.40 out

International platform (Z.ai). Cached input $0.26.

Zhipu’s pricing page, read 23 Oct 2026

On the free plan?

Not tracked

The Access Gap, which checks whether new models reach the free app plan, does not track this one.

Zhipu’s other recent models

data through 30 Oct 2026

  1. 26 Aug 2026 GLM-5.3-Flash First natively multimodal GLM-5 model (320B, 18B active) at about a tenth of GLM-5.2’s price; Z.ai’s second tier beside GLM-5.3, open weights under MIT
  2. 7 Apr 2026 GLM-5.1 Next-generation flagship for agentic engineering, open weights under MIT and on the API
  3. 15 Mar 2026 GLM-5-Turbo Agent-tuned base model priced above GLM-5, on the general API
  4. 22 Dec 2025 GLM-4.7 Year-end flagship
  5. 30 Sep 2025 GLM-4.6 Coding and agent upgrade
  6. 28 Jul 2025 GLM-4.5 Open agentic flagship, released with GLM-4.5-Air on the API and as open weights
  7. 14 Apr 2025 GLM-4-Air-250414 New Air-tier base and reasoning models (GLM-Z1-Air) on the API, with 32B open weights
  8. 16 Jan 2024 GLM-4 Flagship generation

GLM-5.3 in Zhipu’s full release log · its row on the release chart

Release dates and notes come from the site’s release record, data through 30 Oct 2026; each links the lab’s own announcement. Prices are list prices as the lab’s pricing page printed them on the day shown, before any discount. Something wrong? Tell us.