While 500k is the new default, users can manually override the setting to utilize a maximum context length of 1M tokens. OpenAI plans to further raise the default value in the future after testing it as a baseline for its professional user base.
Tuesday, October 20, 2026
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OpenAI Sets GPT-6.1 Sol Default Context to 500k for Codex and Work
AI9 days ago
An approximately 80% increase in the processing window has been rolled out for an AI model to help it remember more nuance during long tasks. OpenAI expanded the default context length for GPT-6.1 Sol to 500k tokens for users of Codex and ChatGPT Work, up from the previous 272k. The update reduces the frequency of data compactions, allowing the system to maintain detail and coherence over extended periods of interaction.
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