Z.ai · Shipped
GLM-5.3 release date
Specs, benchmarks and changelog are on the GLM-5.3 model card at TPS.
First uncensored version on Hugging Face: dealignai/GLM-5.3-UNCENSORED-NVFP4, 15 days after release. 24 uncensored versions in total.
Released
Aug 14, 2026
What we know
Open weights text-generation model with mixture-of-experts architecture, supporting English and Chinese. Available on Hugging Face with transformer implementation.
Spec
- Params
- Not stated
- Active
- Not stated
- Context
- 1048576
- Weights
- other
- Modality
- Not stated
- Codename
- Not stated
Every claim
14 from 4 sources- The DecoderPressOct 30
The Decoder reports Epoch AI researchers saying open-weight GLM 5.3 is widely available, but the article gives no release date.
- TechmemeSpotted in the wildOct 7
GLM-5.3 has been released in open-weights form, with no major cyberattacks reported despite prior risk warnings.
- The DecoderPressSep 30
Zhipu's open-weight GLM-5.3 nearly matches Claude Mythos Preview at building cyber exploits, according to Anthropic testing.
- OpenRouter catalogSpotted in the wildSep 23
GLM-5.3-Prime is now available on OpenRouter as a routable model with 1M token context window.
- The DecoderSpotted in the wildSep 6
Z.AI's GLM-5.3 is being used as the basis for Abliteration.ai's modified versions with stripped safety guardrails.
- TechmemeFrom the labAug 28
Z.ai released GLM-5.3's weights on Hugging Face under a new license with security review requirements for large companies.
- zai-orgSpotted in the wildAug 25
GLM-5.3 model checkpoint published on Hugging Face as a BF16 quantized artifact.
- zai-orgSpotted in the wildAug 25
GLM-5.3 model published on Hugging Face by zai-org, no release date specified.
- TechmemeFrom the labAug 19
Z.ai released GLM-5.3 with API pricing announced; debut occurred last week with advanced cyber capabilities.
- TechmemeSpotted in the wildAug 18
Z.ai launched GLM-5.3, scoring 60 on Artificial Analysis Intelligence Index.
- OpenRouter catalogSpotted in the wildAug 18
GLM 5.3 is now available on OpenRouter as a routing option for Z.ai's reasoning model.
- OpenRouter catalogSpotted in the wildAug 18
GLM-5.3 is available on OpenRouter, a large-scale reasoning model with 1M-token context for software engineering and agent tasks.
- TechmemeFrom the labAug 14
Z.ai will release GLM-5.3 weights in two weeks, a post-trained variant of GLM-5.2 focused on coding and cyber capabilities.
- TechmemeFrom the labAug 14
Z.ai announced GLM-5.3 scores 84.5% on CyberGym cybersecurity benchmark with restricted access to sensitive functions.