Powerful AI for research + writing
Bring your connected AI providers, choose a model, ask a question, or delegate a task with a click. Sierra handles coordination in the background, so you can focus on the research and writing.
Connect providers once. No coding, skills, or orchestration configuration required.
Early product preview · live product figure below
You describe the outcome in plain language. Sierra keeps the connected work moving, then brings the useful result back to the project you are already looking at.
“Help me turn these notes into a clear introduction” is enough to begin. No skills to install. No orchestration setup to learn.
A simple request becomes a shared project thread.Help me turn these notes into a clear introduction.
I’ll shape the opening around the question, the evidence, and the reader’s next question.
Choose a model for each part of the job. Sierra keeps Introduction, Methods, and Results connected to Main while the work moves.
Different strengths. One project conversation.Review what Sierra used, which model shaped the response, and what still needs your judgment before it becomes part of the draft.
Useful work stays close to the evidence.Connected conversations return a concise summary, so you can pick up the whole project without hunting through tabs.
The project remembers where the work came from.Introduction is ready for your edit. Methods has one source check open; Results has a comparison to review.
Summary from Claude, Codex + GeminiIllustrative product story — play the walkthrough or explore each step at your own pace.
Keep connected conversations alongside Main. Open Introduction, Methods, or Results, then bring their summaries back when you need the project’s full shape.
Open a connected conversation to inspect the workspace detail.
Choose a connected conversation to inspect how the project stays together.
Use supported providers in the same project when the work calls for a different perspective. The conversation stays attached to your work as the model changes.
ONE THREAD / DIFFERENT VOICES
The right model for the next question can be part of the same conversation.
Sierra makes the choice visible, so you can see which model shaped a response and keep your review grounded in the project.
Build a careful plan or inspect a technical step.
Example role · planningShape a paragraph, argument, or editorial pass.
Example role · writingOffer another lens on comparison or synthesis.
Example role · comparisonStay conversational when you need a clear answer. Switch to Pursuits when a goal benefits from a defined plan and delegated work.
Use the same project conversation for a quick explanation, a rewrite, or the next decision in your work.
Can you tighten the claim in this paragraph?
I can suggest a revision and show which source supports it.
Conceptual interaction — switching modes changes the shape of the work; it does not start a live run here.
Project memory should be visible enough to trust. Sierra keeps the working context close, makes imported material inspectable, and helps you pick up where you stopped.
Review the material Sierra can use before you ask it to move the work forward.
✳ Bring in Claude or Codex sessions, or paste earlier work, then review it before carrying it forward.
Keep outputs, source notes, and open questions close enough to inspect while you write and edit.
✳ Illustrative records show the intended shape of provenance.
The product is taking shape. These answers stay precise while the launch details are being finalized.
It means a project can work with supported models from more than one provider, with the model choice visible in the conversation. Availability and behavior will depend on the integrations Sierra supports at launch.
Ask Sierra is a focused exchange: you ask, Sierra responds. Pursuits gives a goal a plan and lets you delegate parts of the work to selected agents, then bring the results back to the main project conversation.
The intended continuity path is to bring in Claude or Codex sessions, or paste earlier work from the project directory. The supported formats and review flow will be published before launch.
Launch details are coming soon. The workspace above is an illustrative preview of the product direction, not an active sign-up or download flow.
Explore the workspace story now. Sierra’s release path will be shared when the product is ready for a real project.
Explore the workspace