Models

altimate supports models from all configured providers. Use the model and small_model fields to set defaults.

Configuration

{
  "model": "anthropic/claude-sonnet-4-6",
  "small_model": "anthropic/claude-haiku-4-5-20251001"
}

The model format is provider/model-name.

Browsing Models

In the TUI:

Action	Method
List all models	/models command
Model picker	Leader + m
Filter by provider	Leader + Shift+M

Model Variants

Some providers offer model variants (e.g., different context lengths or capabilities):

{
  "agent": {
    "analyst": {
      "model": "anthropic/claude-sonnet-4-6",
      "variant": "extended-thinking"
    }
  }
}

Cycle through variants in the TUI with the variant cycle keybind.

Per-Agent Models

Set different models for different agents:

{
  "model": "anthropic/claude-sonnet-4-6",
  "agent": {
    "analyst": {
      "model": "anthropic/claude-haiku-4-5-20251001"
    },
    "builder": {
      "model": "anthropic/claude-opus-4-6"
    }
  }
}

Tip

Use a fast, inexpensive model for the analyst agent (which runs many read-only queries) and a more capable model for the builder agent (which produces code).

Favorites

Mark models as favorites for quick cycling with the TUI keybind (leader + Shift+F).

Model Format Reference

Models are referenced as provider/model-name:

Provider	Example Model
Anthropic	anthropic/claude-sonnet-4-6
OpenAI	openai/gpt-4o
AWS Bedrock	bedrock/anthropic.claude-sonnet-4-6-v1
Azure	azure/gpt-4o
Google	google/gemini-2.5-pro
Ollama	ollama/llama3.1
OpenRouter	openrouter/anthropic/claude-sonnet-4-6
Copilot	copilot/gpt-4o
Custom	my-provider/my-model

See Providers for full provider configuration details.