Anthropic has introduced Ultraplan for Claude Code, a new feature that moves the planning phase of software work out of the terminal and into Anthropic’s cloud. The feature is designed to let developers start a task locally, have Claude draft the plan remotely, and then review or revise it in a browser before deciding where execution should happen.
Ultraplan is currently in research preview and requires Claude Code version 2.1.91 or later. To use it, developers need a Claude Code account on the web and a GitHub repository. Because the feature depends entirely on Anthropic’s cloud infrastructure, it is not available through Amazon Bedrock, Google Cloud Vertex AI, or Microsoft Foundry.
The new workflow reflects a broader shift in how AI coding tools are being used. As models become better at handling long-running and multi-step development work, the challenge is no longer just code generation. It is also about how developers supervise, comment on, and iterate with an agent when the work spans multiple stages. Ultraplan is Anthropic’s answer to that problem, offering a more structured planning surface than a local terminal window.
From the command line, users can launch Ultraplan in several ways, including through the /ultraplan command, by mentioning the keyword in a prompt, or by choosing to refine an existing local plan through the web. Once the request is sent, Claude begins researching the codebase and drafting the plan remotely while the local terminal remains available for other work. Developers can monitor status from the CLI and open the linked session when Claude needs clarification or has finished a draft.
In the browser, the generated plan appears in a dedicated review interface. Users can leave inline comments on specific passages, react with emoji, and jump through sections using an outline sidebar. Anthropic says this approach makes it easier to provide targeted feedback than replying to an entire draft inside the terminal. Claude can then revise the plan in response, allowing repeated review cycles before work begins.
Once the plan is approved, developers can choose whether execution happens in the same cloud session or returns to the terminal. If they continue in the browser, Claude implements the plan remotely and the user can later review the diff and open a pull request. If they send the plan back locally, the cloud session is archived and the terminal presents options to implement it immediately, start a new session around the plan, or save it to a file for later use.
The feature highlights Anthropic’s broader push to make Claude Code more useful for extended, multi-step software workflows rather than simple one-off prompts. By separating planning from execution and moving it to the web, Ultraplan gives developers a more flexible way to oversee complex work without tying up their local environment.