Codex default context raised to 500k for GPT-6.1 Sol · Oct 11, 2026
At a glance
Tibo announced that the default context length for GPT-6.1 Sol through Codex and Work is now 500k, up from 272k, with a 1M maximum available via override. He said they will go higher in the future.
- Products
- Codex
- Event type
- Codex Update
- Evidence status
- Directly verified
- Published
What Changed
Codex default context raised to 500k for GPT-6.1 Sol · Oct 11, 2026
Verification
- Source type
- Original source
- Status
- Directly verified
Summary AI summary
Tibo announced that the default context length for GPT-6.1 Sol through Codex and Work is now 500k, up from 272k, with a 1M maximum available via override. He said they will go higher in the future.
What does this mean?
The page is classified from the linked public source; review the original source and verification status.
Type
Codex Update
Event dates
- Published
- Record updated
Original Source Evidence
Day 7/
We have increased default context length for GPT-6.1 Sol to 500k when used through Codex & Work, up from 272k or an ~ 80% increase.
We will go higher in the future, but it helps reduce occurrence of compactions and with tasks that require keeping a lot of context and nuance over periods of time. It was carefully tested and is the new sweet spot for most of our users. You can still override it if you want to be higher our lower, with maximum context length of GPT-6.1 Sol of 1M.
Source
Tibo (@thsottiaux)
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Topic: Latest updates