openai / openai/codex

Why is experimental Context Management limited to ChatGPT subscription sessions?

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CLI context documentation
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Description

Regarding this release note:

Adds the disabled-by-default features.context_management.experimental_mode configuration. When enabled for eligible ChatGPT Plus, Pro, or Pro Lite sessions using the Codex backend, it activates token-budget context, history notes, and the new_context tool. API-key sessions, custom providers, and temporary structured threads remain excluded. (#42385)

Is there a technical reason why API-key sessions are excluded from Context Management?

Since API-key sessions also use the Responses API, I’m wondering whether Context Management depends on any Codex-backend-specific capability that is not available through the public Responses API, or whether this is mainly a rollout/product restriction for now.

If it is only a rollout restriction, are there plans to support Context Management for API-key sessions in the future?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the quoted release note and issue #42385, then identify where experimental Context Management eligibility is defined for session types. Done means the issue has a maintainer-confirmed explanation of the API-key exclusion and any stated plan for future support.

Written by the indexing model from the issue text.

Assessment

Domain
api
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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