Sistava

Choose AI Models

The AI Behavior page lets you see every model available on the platform and set the company-wide default that new employees start with, along with other workspace-wide behavior settings.

TL;DR

Go to Settings > Technical > AI Behavior to browse all available models organized by tier (Fast, Standard, Advanced). Set the company-wide default model here. The tier determines how many credits each message costs: Fast is cheapest, Advanced is most powerful. Individual employees can be switched to a different model on their profile.

Where to Find It

  1. Click the gear icon in the top-right of your workspace
  2. Go to Technical > AI Behavior

Model Tiers

Every model belongs to one of three tiers. The tier determines cost and capability.

Tier Speed Capability Credit Cost Best For
Fast Quickest responses Good for simple, well-defined work Lowest (roughly 10x cheaper than Advanced) Quick lookups, formatting, simple drafts, routine Q&A
Standard Balanced Handles most everyday tasks well Medium Conversations, analysis, writing, planning
Advanced Slower, more thorough Best reasoning and nuance Highest Complex analysis, long documents, multi-step reasoning

Available Models

Fast Tier

Model Provider Credits per 1M tokens Reasoning
GPT-5 Nano OpenAI 33 Adjustable
GPT-4.1 Nano OpenAI 40 Basic
GPT-4o Mini OpenAI 61 Basic
GPT-4.1 Mini OpenAI 162 Basic
GPT-5.4 Nano OpenAI 110 Adjustable
GPT-5 Mini OpenAI 165 Adjustable

Standard Tier

Model Provider Credits per 1M tokens Reasoning
GPT-5.4 Mini OpenAI 399 Adjustable
o4 Mini OpenAI 445 Adjustable
Haiku 4.5 Anthropic 468 Adjustable
GPT-4o OpenAI 1,011 Basic

Advanced Tier

Model Provider Credits per 1M tokens Reasoning Notes
Kimi K2.5 DeepInfra 230 Built-in Recommended. Best value in Advanced tier
Kimi K2.6 DeepInfra 421 Built-in Newer K2 generation
GPT-5.1 OpenAI 824 Adjustable
GPT-5.2 OpenAI 1,154 Adjustable
Sonnet 4.6 Anthropic 1,404 Adjustable
GPT-5.4 OpenAI 2,181 Adjustable
Opus 4.7 Anthropic 2,340 Adjustable Most capable Anthropic model
Opus 4.6 Anthropic 2,340 Adjustable Prior Opus generation
GPT-5.2 Pro OpenAI 13,851 Adjustable Premium
GPT-5.4 Pro OpenAI 26,170 Adjustable Premium

What You See on the Page

The AI Behavior page displays all available models grouped by tier in the Employee Brain card. For each model you can see:

Setting the Company-Wide Default

The company-wide default model is what every newly hired employee uses unless you change it individually.

  1. Go to Settings > Technical > AI Behavior
  2. In the Employee Brain card, pick the model you want as the default
  3. The change saves automatically

Important: Changing the default only affects employees hired after the change. Existing employees keep their current model. To change an existing employee's model, go to their profile.

Reasoning Models

Some models support reasoning, which means the employee can think through complex problems step by step before responding. Reasoning models:

Models with reasoning support can be tuned via the Thinking Depth selector in the Employee Brain card on the AI Behavior page. You can see the reasoning process in the Activity Inspector when inspecting a message.

How Models Affect Credits

The model tier is the biggest factor in credit cost per message.

What Changes Impact
Fast tier model Fewest credits per message. Great for high-volume, simple work
Standard tier model Moderate credits. The default balance of cost and capability
Advanced tier model Most credits per message. Reserve for work that truly needs it
Reasoning enabled Additional credits for the thinking phase

You can mix and match across your workforce: assign Fast models to employees doing routine work and Advanced models to employees handling complex analysis.

Per-Employee Model Override

The company default is just the starting point. You can change any individual employee's model.

  1. Go to your Workspace and select the employee
  2. Open the Settings tab (or persona settings)
  3. Change the AI model

This override only affects that one employee. All other employees continue using their assigned models.

Tips and Tricks

Frequently Asked Questions

Q: Where do I set the company-wide default model? A: Go to Settings (gear icon) > Technical > AI Behavior. In the Employee Brain card, pick the model you want. It saves automatically.

Q: Does changing the default model affect existing employees? A: No. Only newly hired employees use the new default. Change existing employees individually on their profile.

Q: What is the difference between tiers? A: Fast is cheapest and quickest for simple tasks. Standard balances cost and capability for everyday work. Advanced is most powerful for complex reasoning but costs the most credits.

Q: Can different employees use different models? A: Yes. The company default is just the starting point. You can assign any available model to any individual employee on their profile.

Q: Do reasoning models cost more? A: Yes. The thinking phase uses additional credits. The total cost depends on how much reasoning the model does for each response.