Choose the workspace and model deliberately
The desktop interface connects ChatGPT and Codex while retaining distinct working areas. For repository work, select Codex and the intended project folder. GPT-6 Sol and Luna are available according to access in the September update; a manual model choice can be retained. Check the setting actually in use before comparing results. A file project is also not automatically a Git repository. Working location, model and version control belong together in the setup evidence.
Choose a small project with a known starting state
An initial trial needs only a bounded issue and a reproducible test. Record the starting state and supply expected behaviour, test commands and constraints. An isolated branch or worktree makes review easier when the project uses Git. Production credentials are normally unnecessary for this setup test.
Review permissions and output together
Before the task, review effective file, command and network permissions. Afterwards, inspect the diff, relevant tests and application behaviour. Assess additional apps or MCP tools individually. Sign-in proves access; the reviewed task proves whether this setup is useful for your team.
Decision matrix
| Decision point | Proceed when | Stop when |
|---|---|---|
| Working environment | Documented: sign-in, workspace, repository rules, sandbox, tests and review. | Scope, data or accountability remains unresolved. |
| Isolated functional test | Reviewable setup evidence includes the selected repository, effective boundaries, the diff for a small task and relevant test results. Review confirms that unrelated files were not changed. | There is only an unevaluated demo without acceptance evidence. |
| Operational readiness | Owner, approval, fallback and next review date are defined. | Avoid: production secrets in the repository or unrestricted write access. Production secrets or unrestricted write access in the first workspace prevent a sufficiently isolated setup trial. |
Keep it verifiable
Primary sources
- OpenAI: ChatGPT desktop appSource checked:
- OpenAI: Agent approvals and securitySource checked:
- OpenAI: current Codex modelsSource checked:
- OpenAI: ChatGPT release notesSource checked:
