• token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
• context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.

Codex now documents an opt-in 1M-token context for GPT-5.6 Sol, but OpenAI's own researchers say the tuned default with autocompaction wins on both performance and cost.

• postOpenAI: Hugging Face incident traced to current-scale models
• post@OpenAI To be clear, I don't recommend increasing the default context size in Co

• post@OpenAI To be clear, I don't recommend increasing the default context size in Copolynoamial
• repoCodex Orange Book花叔
• postCodex and ChatGPT can now understand the context of your recent work. Opt into COpenAIDevs

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