GPT-6.1 Terra reaches GitHub Copilot with plan, rollout and admin-policy limits

GitHub made GPT‑6.1 Terra generally available in Copilot on October 26. The announcement names Copilot Pro, Pro+, Max, Business and Enterprise as eligible plans and directs users to select the model through the model picker.

The supported surfaces listed in the release are Visual Studio Code, Visual Studio, Copilot CLI, the GitHub Copilot cloud agent, the Copilot app, github.com, GitHub Mobile on iOS and Android, JetBrains IDEs, Xcode and Eclipse. This is a distribution update across Copilot experiences, with availability subject to the rollout and the user’s applicable model policy. OpenTools has not tested model visibility in each client.

GitHub explicitly says [the rollout will be gradual](https://github.blog/changelog/2026‑10‑26‑gpt‑6‑1‑terra‑in‑github‑copilot). A subscriber on one of the named plans may therefore need to wait for the model to appear. The notice does not supply a completion date for every account or client, so general availability should not be read as simultaneous visibility everywhere. For Copilot Business and Enterprise, administrators can manage Terra through the model policy in Copilot settings. Under default model enablement, new models are automatically enabled unless an administrator has turned off the global default or explicitly disables this model. For a team checking access, both the rollout state and its organization’s model settings matter; a model’s release announcement does not change an administrator’s policy choice.

The [launch notice](https://github.blog/changelog/2026‑10‑26‑gpt‑6‑1‑terra‑in‑github‑copilot) states that Terra is billed at provider list pricing under usage‑based billing and points readers to [GitHub’s models‑and‑pricing reference](https://docs.github.com/en/copilot/reference/copilot‑billing/models‑and‑pricing) for details. It does not publish a numerical rate in the announcement. The eligible‑plan list identifies who can receive the model, while the billing reference supplies the usage terms a team needs to check before estimating its own workload cost. This Copilot rollout also serves a different integration decision from [Terra’s direct API release](https://opentools.ai/news/openai‑gpt‑6‑1‑terra‑api‑input‑tools‑responses‑limits), which OpenTools covered separately. The API story explains direct model inputs and tool support; the current Copilot notice establishes the plans, clients, rollout behavior and model‑policy controls through which subscribers can select Terra. *A letterbox for GitHub’s office in Spuistraat, Amsterdam, photographed November 9, 2023. Archive company context; not the Copilot model picker or a depiction of the October 2026 release. Photo: [Rrustema](https://commons.wikimedia.org/wiki/Special:Contributions/Rrustema), via [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Letterbox_for_GitHub_office_in_Spuistraat,_Amsterdam,_the_Netherlands.jpg), [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/deed.en). Cropped to frame the letterbox and resized for display.*