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Current models

Augment uses world-class large language models together with our Context Engine. We currently support the following models:
  • Claude Haiku 4.5 by Anthropic
  • Claude Opus 4.5 by Anthropic
  • Claude Sonnet 4 by Anthropic
  • Claude Sonnet 4.5 by Anthropic
  • GPT-5.1 by OpenAI

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Choosing a model

You can select the model directly using the Model Picker in the Augment.
  • In VS Code and JetBrains, open the Augment panel and use the model dropdown near the input box to switch models.
  • In Auggie CLI, use the /model slash command or pass the --model flag with the desired model.
  • Your selection applies only to Agent in that workspace and can be changed at any time.
If you don’t pick a model, Augment will use your last selection or the default set by your organization.

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Model pricing

Augment uses a credit-based pricing system. Different models consume credits at different rates based on their capabilities and costs:
  • Sonnet 4.5: Baseline credit consumption for balanced, complex tasks
  • Opus 4.5: ~167% of Sonnet’s cost - most capable model for the hardest tasks
  • Haiku 4.5: ~30% of Sonnet’s cost - ideal for quick, simple tasks
  • GPT-5.1: ~75% of Sonnet’s cost - great for medium-complexity work

Credit-Based Pricing

Learn more about credit costs, see detailed examples, and discover tips for optimizing your credit usage

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Feature compatibility

Both models support the core Augment Agent features:
  • Deep code understanding with Augment’s Context Engine
  • Tool use (integrations and MCP), file edits, and multi-step planning
Some behaviors (e.g., wording or style) may vary slightly between models. We’ll continue to refine prompts and guardrails to provide a consistent developer experience.

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Notes and transparency

  • We may roll out model updates gradually. If you’re part of a staged rollout, different workspaces or teammates may see updates at different times.
  • For troubleshooting, you can share the request ID with our support team; they can confirm which model handled a specific request.
If you have questions about model availability or want to participate in early access programs, please reach out via Support.