GLM-5

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Z.ai · Feb 2026Latent attention and experts

Checkpoint configuration and implementation zai-org/GLM-5 @ c183ef8, huggingface/transformers @ 5e4d630 · parameter count checked against the checkpoint’s tensor headers · How to read

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tensormessages

Text supplied for tokenization.

Codetokenizer_config.json 1–33
tokenizer_config.json 1–33
{
  "backend": "tokenizers",
  "clean_up_tokenization_spaces": false,
  "do_lower_case": false,
  "eos_token": "<|endoftext|>",
  "extra_special_tokens": [
    "<|endoftext|>",
    "[MASK]",
    "[gMASK]",
    "[sMASK]",
    "<sop>",
    "<eop>",
    "<|system|>",
    "<|user|>",
    "<|assistant|>",
    "<|observation|>",
    "<|begin_of_image|>",
    "<|end_of_image|>",
    "<|begin_of_video|>",
    "<|end_of_video|>",
    "<|begin_of_audio|>",
    "<|end_of_audio|>",
    "<|begin_of_transcription|>",
    "<|end_of_transcription|>"
  ],
  "is_local": true,
  "model_max_length": 202752,
  "model_specific_special_tokens": {},
  "pad_token": "<|endoftext|>",
  "padding_side": "left",
  "remove_space": false,
  "tokenizer_class": "TokenizersBackend"
}
Sources1

Contextual evidence

The checkpoint’s tokenizer is a Hugging Face tokenizers file (tokenizer.json) loaded by the generic TokenizersBackend; the configuration declares its special tokens, among them the role markers and [gMASK] and <sop>.

tokenizer · zai-org/GLM-5 / tokenizer_config.json
Pinned revision c183ef8c61fa ↗ · lines 1–33

Read code excerpt
{
  "backend": "tokenizers",
  "clean_up_tokenization_spaces": false,
  "do_lower_case": false,
  "eos_token": "<|endoftext|>",
  "extra_special_tokens": [
    "<|endoftext|>",
    "[MASK]",
    "[gMASK]",
    "[sMASK]",
    "<sop>",
    "<eop>",
    "<|system|>",
    "<|user|>",
    "<|assistant|>",
    "<|observation|>",
    "<|begin_of_image|>",
    "<|end_of_image|>",
    "<|begin_of_video|>",
    "<|end_of_video|>",
    "<|begin_of_audio|>",
    "<|end_of_audio|>",
    "<|begin_of_transcription|>",
    "<|end_of_transcription|>"
  ],
  "is_local": true,
  "model_max_length": 202752,
  "model_specific_special_tokens": {},
  "pad_token": "<|endoftext|>",
  "padding_side": "left",
  "remove_space": false,
  "tokenizer_class": "TokenizersBackend"
}