Skip to main content
The model picker is how you select and switch AI models in ZeroTwo. It’s available in every chat and gives you access to the full library of 95+ models across 19 providers.

Opening the model picker

In chat: Click the model name displayed in the bottom-left of the prompt bar. The model picker opens as a panel or modal overlay. In Studio (Images, Video, Audio): Click the model dropdown in the Studio controls section. Studio pages have their own model selector scoped to the relevant model type (image, video, or audio models only).

Model picker interface

The picker displays:
  • Search bar at the top — type to filter models by name
  • Provider filter — tabs or sidebar listing all 19 providers; click to filter to a single provider’s models
  • Model list — each model shows its name, Standard or Premium badge, context window size, and capability icons
  • Capability indicators — icons showing whether a model supports vision, tool use, or extended thinking
  • Favorites section — models you’ve starred appear pinned at the top for quick access

Selecting a model

1

Open the model picker

Click the model name in the bottom-left of the prompt bar in any chat. The picker opens.
2

Browse or search

Scroll through the model list, or type in the search bar to filter by name. For example, type “claude” to see all Claude models, or “gemini flash” to narrow to Flash variants.
3

Filter by provider (optional)

Click a provider name in the filter sidebar or tabs to show only that provider’s models. Useful when you want to compare all models from a specific provider.
4

Click a model to select it

Click the model name to select it. The picker closes and the model name updates in the prompt bar.
5

Send your message

Your next message will be processed by the newly selected model.

Pinning favorites

To pin frequently used models to the top of the list:
  1. Hover over any model in the picker
  2. Click the star icon that appears
  3. The model moves to the Favorites section at the top of the picker
To unpin a model, click the star icon again. Favorites are saved to your account and persist across sessions and devices.
Pin your 3–5 most commonly used models as favorites. With favorites, you can switch models in 2 clicks instead of searching every time.

Understanding model badges

Each model in the picker displays a badge indicating its tier:
BadgeMeaning
StandardNo monthly cap — available on all plans
PremiumCounted against your monthly quota — requires Pro+ plan
Free plan users can only select Standard models. On Pro+ plans, both Standard and Premium models are available up to your quota.

Context window and capabilities

The model picker shows key information for each model at a glance:
  • Context window: shown in tokens (e.g., 128k, 200k, 1M) — this is how much text the model can process in a single conversation
  • Vision: indicates the model can analyze images attached to your message
  • Tools: indicates the model supports tool/function use
  • Thinking: indicates the model supports extended reasoning (reasoning models)

Reasoning models and thinking levels

When you select a reasoning model (like o3, o4-mini, DeepSeek Reasoner, or Claude with extended thinking), you may see a thinking level slider appear in the prompt bar. This controls how deeply the model reasons before responding:
LevelBehavior
LowQuick thinking — faster responses, lighter reasoning
MediumBalanced — good for most complex tasks
HighDeep thinking — most thorough, slower, uses more quota
See Reasoning models for detailed guidance on when to use each level.

Switching models mid-conversation

You can switch models at any point in an existing conversation:
  1. Click the model name in the prompt bar
  2. Select a different model from the picker
  3. Continue the conversation — your next message uses the new model
The entire conversation history is passed to the new model, so it has full context of what was discussed. Previous messages remain attributed to the model that sent them; only future messages use the new model.
Switching models in a chat only affects that chat. Other open or saved chats continue using their own selected models. Model selection is per-chat.