Shape Their Persona
Each employee has an identity you set on their Profile tab, and a brain the whole workspace shares from one place. This article covers both: who the employee is, and how the AI behind every employee is configured.
TL;DR
Go to Workspace, select an employee, open the Profile tab to set their name, role, background, language, and tone of voice. The AI model, thinking depth, and actions-per-turn limit are workspace-wide settings, not per-employee: change them at Settings > AI Config. Profile fields save automatically when you click away.
What Is on the Profile Tab
The Profile tab is divided into four sections:
Identity
Controls who the employee is.
| Field | What It Does |
|---|---|
| Avatar | The employee's profile picture. Click it to upload a photo (JPEG, PNG, GIF, or WebP, up to 5 MB) |
| Name | Display name used in the sidebar, chat, and across the platform |
| Role | Job title shown on the employee's profile (e.g., "Content Writer," "Marketing Strategist") |
| Team | Which team the employee belongs to. Changing it moves them the same way dragging them on the org chart does |
Reports To and Mentor are shown as read-only info: Reports To is derived from the employee's team leader (or you, if there is no leader), and Mentor is the same guide for every employee.
Persona
Controls who the employee is, not how they talk.
| Field | What It Does |
|---|---|
| Background & Personality | A text field where you describe the employee's background, what they care about, and how they think about their work |
This is the who, not the how, tone and language live in the Voice section below and should not repeat here. Each employee starts with a template-seeded default, and the employee can refine its own persona over time through the same field.
Voice
Controls how the employee talks.
| Field | What It Does |
|---|---|
| Language | The employee's default language. Leave it empty and the employee mirrors whichever language you write in |
| Tone of Voice | Free text describing tone, e.g. "Warm and direct. Plain English, no jargon." |
Contact
Where people can reach this employee directly.
| Field | What It Does |
|---|---|
A live mailbox address (<employee>@<yourworkspace>.mail.sista.ai). Email it and the employee replies from the same address |
|
| Slack | Shows the connected Slack handle, or a button to connect Slack for this employee |
| Phone | Not available yet |
AI Model, Thinking Depth, and Actions per Turn
These are not per-employee settings today. They are set once for the whole workspace at Settings > AI Config (/technical/ai-models), and every employee uses the same brain.
| Field | What It Does |
|---|---|
| Model | Which AI model every employee uses by default. Grouped by tier: Fast, Standard, Advanced, and Frontier |
| Credits Saver | A toggle that automatically routes simple, conversational turns to a faster model and keeps the model above for real work |
| Thinking Depth | How hard the model reasons before responding. Only active for models that support extended reasoning |
| Creativity | The model's temperature (0 to 2, default 0.7). Lower is steadier and more predictable, higher is more varied |
| Actions per Turn | How many actions (tool calls, reads, searches) an employee can take in a single response |
The model dropdown shows models from OpenAI, Anthropic, and other providers, grouped by tier. Bigger models are smarter but slower and cost more credits per turn.
AI Model Tiers
| Tier | Best For |
|---|---|
| Fast | Quick responses, lowest credit cost |
| Standard | Good balance of speed and capability |
| Advanced | Best quality, highest credit cost |
| Frontier | Top-of-line brains, the very best quality |
Exact credit cost per model changes as providers change their pricing, so the number shown next to each model in the picker is always the current one, not a fixed table.
Thinking Depth
For models that support extended thinking:
| Level | What It Does |
|---|---|
| Auto (Recommended) | Adjusts dynamically: quick for simple messages, deeper for complex ones |
| Off | No reasoning. Fastest responses, lowest cost |
| Minimal / Light / Medium / Deep | Increasing levels of reasoning depth and cost |
The dropdown is disabled when the selected model does not support reasoning.
What You Can Do
| Action | How |
|---|---|
| Change the name | Profile tab, Identity section. Edit the Name field, click away to save |
| Change the role | Profile tab, Identity section. Edit the Role field, click away to save |
| Upload a photo | Profile tab, Identity section. Click the avatar |
| Move the employee to another team | Profile tab, Identity section. Change the Team field |
| Set background and personality | Profile tab, Persona section. Write what shapes who they are |
| Set language and tone | Profile tab, Voice section |
| Switch the workspace AI model | Settings > AI Config. Select from the Model dropdown |
| Set thinking depth | Settings > AI Config. Select from the Thinking Depth dropdown |
| Set actions per turn | Settings > AI Config. Enter a number for the workspace |
How to Set It Up
- Go to Workspace, click on an employee in the sidebar
- Open the Profile tab
- Edit Identity, Persona, or Voice fields. Changes save automatically when you click away
- To change the AI model or reasoning depth for every employee, go to Settings > AI Config
Tips and Tricks
- Match the persona to the role. A customer-facing writer might be friendly and conversational. A legal analyst might be formal and precise.
- Keep tone and language in Voice, not Persona. Persona is background and personality; repeating tone instructions there just duplicates what Voice already handles.
- Use Fast for simple tasks. Quick lookups, formatting, and drafts cost less than Standard, Advanced, or Frontier models.
- Try Credits Saver. It automatically sends simple, conversational turns to a cheaper model and keeps your chosen model for real work, at no setup cost.
- Persona is not a skill. Do not put process instructions in the persona field. Use the Skills tab for workflows and the Duties tab for standing rules.
Good to Know
- Model, thinking depth, and actions per turn are workspace-wide. Every employee currently shares the same brain settings. There is no per-employee override in the UI today.
- Changes apply immediately. Updated persona, voice, and AI settings take effect on the next message. No restart needed.
- No quality impact from persona. Persona and Voice change style, not the capability or accuracy of the work.
- Provider fallback. If a model provider goes down, the gateway automatically retries with a model from another provider, and the request is billed at the fallback model's rate.
- Auto-save on blur. Profile fields save automatically when you click outside (blur). There is no save button.
- Change history. The bottom of the Profile tab shows who changed the employee's details and when, since the employee itself can also rewrite its own persona.
Frequently Asked Questions
Q: Does changing the personality affect the quality of work? A: No. Persona changes the style of communication (background, personality) but not the quality or accuracy of the output.
Q: Can I set a different AI model for each employee? A: Not today. The AI model, thinking depth, and actions per turn are set once at Settings > AI Config and apply to every employee in the workspace.
Q: What happens if the AI provider goes down? A: The gateway automatically retries with a fallback model from a different provider. You are billed at the fallback model's rate, not the original.
Q: Can I change the employee's name? A: Yes. Edit the Name field in the Identity section of the Profile tab. The change takes effect immediately.
Q: What does "Actions per Turn" mean? A: It limits how many actions (tool calls, reads, searches) an employee can perform in a single response. Higher values allow longer, multi-step work.
Q: Can I upload a custom photo for my employee? A: Yes. Click the avatar on the Profile tab and upload a JPEG, PNG, GIF, or WebP file up to 5 MB.