Simon Willison’s Weblog

GPT-3 token encoder and decoder. I built an Observable notebook with an interface to encode, decode and search through GPT-3 tokens, building on top of a notebook by EJ Fox and Ian Johnson.

Posted 27th April 2023 at 11:48 pm

Recent articles

Claude can write complete Datasette plugins now - 8th October 2025
Vibe engineering - 7th October 2025
OpenAI DevDay 2025 live blog - 6th October 2025

projects 499 ai 1607 observable 49 gpt-3 67 openai 357 llms 1385

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