[KongchangAI]
Concept

tokenizer_config.json

A configuration file in the Hugging Face ecosystem that controls tokenizer behavior, defining how text is split into tokens, including pre-tokenizer and decoder settings.

Timeline (last 90 days)

Oct 15

In AREX-2's tokenizer_config.json, the pre-tokenizer and decoder settings differ from those of Qwen3.8-27B, which may cause garbled tool calls after the agent runs for several hours.

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Sep 27

The basic steps for diagnosing template issues are to confirm the official chat template on the HuggingFace model page or in tokenizer_config.json, and compare it character-by-character with the format actually used in deployment.

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