Codex and ChatGPT Work give GPT-6.1 Sol 500k context

Half a million tokens is what GPT-6.1 Sol now holds by default in Codex and ChatGPT Work, after OpenAI raised its default context length to 500,000. Think of context as the model's desk: the bigger it is, the more repo files and chat history stay in view before older material has to go.
OpenAI also plans to push the default higher, but it hasn't said when or to what number, so 500k may not stay the ceiling for long. The source names only Codex and ChatGPT Work. Until this change, the default sat at 272k.
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