AI Personalities
Studio plan — This feature is available on the Studio plan only. See Plans Overview.
Custom AI Personalities let you save your own system prompts and switch between them per chat. Use them to lock the AI into a specific style — strict refactorer, gameplay prototyper, code reviewer, beginner-friendly teacher — without re-explaining the rules every time.
What a personality is
Each personality has:
| Field | What it does |
|---|---|
| **Name** | Shown in the personality picker (e.g. "Strict Refactorer") |
| **Description** | A short note for your future self about when to use it |
| **System prompt** | The instructions Revix layers on top of the base prompt for this chat |
| **Temperature** (optional) | Override the default sampling temperature (lower = more deterministic, higher = more creative) |
When a personality is active, its system prompt is prepended to every message in the chat. Switch personalities and the AI's behavior shifts immediately for subsequent messages.
Limits
| Limit | Value |
|---|---|
| Maximum saved personalities per user | **10** |
| Required plan | Studio |
If you hit 10 and want to add another, edit or delete one of the existing slots.
Creating a personality
Open the dashboard, go to Settings, then AI Personalities. Click New personality, give it a name, write the system prompt, optionally set a temperature, and save.
Example: Strict Refactorer
A personality focused on conservative, surgical edits — no rewrites, no new patterns, no extra features.
You are a strict refactorer. Follow these rules without exception.
1. Make the smallest possible change. Prefer surgical edits over rewrites.
2. Never introduce new patterns, libraries, or abstractions unless the user explicitly asks.
3. Always read the affected scripts in full before editing.
4. Match the existing code style exactly — indentation, naming, casing, comment style.
5. Never delete code unless the user explicitly asks. Comment it out at most.
6. If you are unsure whether a change is safe, ask before editing.
7. When done, summarize the diff in plain English so the user can review.Pair this with a low temperature (e.g. 0.2) for very deterministic behavior.
Switching personalities
The active personality is shown above the chat input. Click it to open the picker, pick a different one, and continue chatting. The change applies to the next message — earlier messages in the same chat aren't replayed under the new personality.
Editing and deleting
Open Settings then AI Personalities and click any saved entry to edit or delete it. Edits apply immediately to any chat currently using that personality.
Best practices
- Keep system prompts focused. One personality, one job. "Strict Refactorer" and "Gameplay Prototyper" should not be the same prompt.
- State constraints up front. "Never do X" is more reliable than "try to avoid X".
- Use temperature deliberately. Refactoring and reviewing want low temperature. Creative brainstorming wants higher.
- Reuse, don't rewrite. Edit the same personality over time as you discover what works — don't make a new one every time.
Troubleshooting
- Personality isn't taking effect: confirm it's selected for the current chat (check above the input).
- Hit the 10-personality cap: delete or edit an existing one.
- Want personality to apply retroactively: start a new chat with that personality selected from the first message.
- For changing models alongside personalities, see Chat Basics.