{"record":{"id":"YT-NMoHHSWf1Mo","slug":"youtube-NMoHHSWf1Mo","kind":"film","title":"how the tokenizer for gpt-4 (tiktoken) works and why it can't reverse strings","dek":"A film by Chris Hay.","abstract":"“how the tokenizer for gpt-4 (tiktoken) works and why it can't reverse strings” is a video on Chris Hay’s YouTube channel. Its full transcript has not yet been indexed.","created":"2026-09-05","publication":"catalogued","version":"1.0","authors":["Chris Hay"],"body":[{"kind":"film","media":"youtube-NMoHHSWf1Mo"}],"concepts":[],"related":[],"media":["youtube-NMoHHSWf1Mo"],"sourceMetadata":{"retrievedAt":"2026-09-05T18:58:44+00:00","sourceHash":"fb867d51f572fd0f1378d1b11c5c980a9ef36fc96f56cf40e08e34a085e74867","transcript":"missing","views":3600,"viewsApproximate":true},"collection":"YouTube","originalUrl":"https://www.youtube.com/watch?v=NMoHHSWf1Mo","youtubeId":"NMoHHSWf1Mo","sources":[{"title":"Original YouTube film","url":"https://www.youtube.com/watch?v=NMoHHSWf1Mo","note":"Metadata retrieved 2026-09-05T18:58:44+00:00. Topic links are inferred from title and description; they are discovery links, not validated claims."}]}}