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Key Takeaways
- November 12 is the proposed shutoff date in OpenAI’s announcement, not evidence that supply has already stopped or an unchangeable final outcome.
- Access to existing models is expected to be maintained where possible during the transition, but OpenAI explicitly says it will no longer provide future models to Cursor.
- The announcement does not retire Cursor accounts, the editor or other models as a whole. Its scope is the contractual integration through which OpenAI provides models to Cursor.
- Begin migration by freezing a set of real tasks as a baseline, then compare model availability, tool calls, context, cost and output differences.
- Production workflows must retain old configuration, evaluation results and fallback conditions. Do not switch all traffic on announcement day.
Why teams need to act even while the models remain selectable
A developer can still select OpenAI models in Cursor today and may therefore assume the announcement is irrelevant. The real risk accumulates when new models stop arriving in Cursor, availability differs between team members or the proposed shutoff date approaches. The visible symptom may only be a missing new model, while the cost includes invalidated evaluations, changed code-review behavior, budget changes and rushed migration.
The wrong instincts are waiting until models disappear or interpreting a single failed request as early official cutoff. Instead, record current model names, plans, workspace policies, key prompts, rule files, tool permissions and ten to twenty representative tasks. Retain request times and error details too, separating product eligibility, service incidents and the contractual timeline.
Confirmed and unconfirmed: define the announcement’s boundaries
On August 28, 2026, OpenAI said it had notified SpaceX of its proposed termination of the contract to provide OpenAI models to Cursor, with a suggested shutoff date of November 12, 2026. It would try to maintain developer access until then but would not provide future models to Cursor. The announcement attributed the decision to its assessment of the contract and terms of service following a change of control.
The announcement did not provide an early-removal schedule for individual models or retire Cursor, user projects or other models as a whole. Independent availability of the OpenAI API and Codex also cannot be inferred from this Cursor contract announcement. November 12 should remain labeled the proposed shutoff date; recheck the latest formal statements from OpenAI and Cursor before purchasing or switching.
Who this checklist applies to, and who should not apply it
It applies to individual developers who pin OpenAI models in Cursor, teams standardizing models through workspace policies, and owners who feed Cursor agent output into code review, testing or release workflows. Pay particular attention to automation dependent on specific model behavior, context lengths, tool calling or structured output.
Workflows calling OpenAI models directly through the OpenAI API, Codex or other editors do not automatically fall within the same shutdown scope. Occasional 401, 429 or 5xx errors, an empty model selector or enterprise policy restrictions are not proof of contractual removal. Check account permissions, plans, allowances, service status and administrator settings separately.
Six migration steps from inventory to canary rollout
First, export the team’s current models, rules, MCP/tools and permissions inventory. Second, select representative tasks such as completion, cross-file edits, debugging, test generation and code review, saving inputs, acceptance criteria and existing output. Third, choose only alternative models already authorized for the organization and currently visible in Cursor; do not guess future supply. Fourth, compare correctness, tool permissions, latency and cost on an isolated branch. Fifth, let a small group use the alternatives in a canary rollout and record failure types. Sixth, change team defaults only after acceptance passes.
Acceptance criteria must target tasks rather than a single subjective answer: do tests pass, are files changed incorrectly, do tools exceed authorization, is long context lost, and are structured results parseable? Record model version, date, Cursor client and plan so results from different rollout stages are not conflated.
Stop, rollback and recheck conditions
If an alternative repeatedly makes unauthorized changes, causes test regressions, expands tool permissions, exceeds budgets or breaks output formats in critical repositories, stop expanding the canary rollout and restore the saved workspace defaults. Rollback restores model and rule configuration only; it must not overwrite user code created during migration. Code reverts should follow the team’s established review process.
Recheck at least when Cursor publishes formal migration guidance, OpenAI updates the proposed date, the team’s plan or model list changes, and two weeks before November 12. If official information remains contradictory, retain dual paths and a reversible baseline without writing assumptions into the runbook.
Common mistakes and the network boundary
Common mistakes are describing a proposed date as a removal already completed today; assuming every OpenAI product ends with the Cursor contract; repeatedly reinstalling the client because future models are missing; and changing only the model name without revalidating tools, permissions and cost. This is a supply-contract and product-availability change with no direct causal link to egress IP.
Only when DNS, TLS, connection timeout or explicit proxy errors appear should you use the proxy connection troubleshooting checklist to inspect the transport layer separately. For the distinction between API Key, Base URL and model names, see the AI API configuration guide. A working network cannot guarantee a model remains part of Cursor’s product offering.
Sources
Frequently Asked Questions
Have OpenAI models already been removed from Cursor?
No. OpenAI’s August 28 announcement said it would try to maintain access during the transition and proposed November 12, 2026 as the shutoff date. Actual status must still be checked against official statements and the product interface at the time.
Is November 12 a fixed, final date?
The announcement uses proposed shutoff date. It is a clear point for migration planning, but should not be described as already implemented or impossible to change.
Will future OpenAI models still come to Cursor?
OpenAI explicitly says it will no longer provide future models to Cursor. The announcement does not give a model-by-model schedule for how long existing models will remain.
Does this affect direct use of the OpenAI API or Codex?
The announcement concerns the contract integration through which OpenAI provides models to Cursor. It does not establish simultaneous closure of the independent OpenAI API, Codex or other channels.
Should the team replace its default model everywhere immediately?
No. Save a baseline first and use representative tasks in a canary rollout to validate alternatives for correctness, tool permissions, cost and output format. Switch gradually after acceptance.
Can changing IP addresses restore OpenAI models when Cursor requests fail?
It cannot solve product supply or contractual removal. Investigate the network separately only when error evidence points to DNS, TLS, timeouts or proxy paths. Check product status for eligibility, plans and model lists.