Japgolly

Suspected GitHub username of japgolly, a Scala library author (cl100k id 70784).

"Japgolly"

Observed behaviors

• 01An “unspeakable” glitch token: ChatGPT often returns a blank message or terminates mid-attempt when asked to repeat it; nondeterministic at temperature 0 (bold-flagged in the source).LessWrong
• 02It is still a single token in o200k_base (id 199745). oh-my-pi's scan of 1.05M production tool calls found that such near-initial-embedding glitch tokens trigger Harmony protocol headers leaking as plain text into tool arguments on GPT-5.4/5.5 (163 per million calls on gpt-5.4; down to 25 per million on gpt-5.5, but not eradicated).GitHub

References

• A Search for More “Unspeakable” Glitch Tokens — LessWrong

Related tokens