August 7, 2025
Model picker: choose between Claude Sonnet 4 and GPT-5

Augment now supports two models in production — Claude Sonnet 4 (default) and OpenAI GPT-5 — with a new picker that lets you switch between them at any time. This is the first time we’ve exposed model selection directly in the product.

We’ve traditionally avoided surfacing model choice. But Sonnet and GPT-5 now handle different coding scenarios well enough to justify optionality:
- Use Sonnet for: fast answers, quick single-file edits, and iterative review loops
- Use GPT-5 for: multi-file changes, complex refactors, debugging, and edge-case handling
This lets you choose the right model based on the task at hand — without changing your workflow or context.
We’re also using switching patterns as signal: where users prefer one model over another helps guide future tuning, routing, and defaults.
Available in: JetBrains v0.265.2, VS Code v0.524.1. Rolling out gradually.