Base44 Adds Sonnet 5 to AI Chat
Base44Base44 added Sonnet 5, Anthropic's newest mid-tier model, as a selectable option in AI chat. Positioned as a balanced speed-and-quality choice, Sonnet 5 is aimed at everyday building, quick iterations, writing, refactoring, and troubleshooting. The addition arrives one day after Base44's own Base 1 launch, giving builders a wider spread of model options across the automatic model-selection system.
A New Balanced Option Joins Base44's Model Lineup
Base44 introduced Sonnet 5 as a model choice in AI chat, one day after debuting its own proprietary Base 1 model. Sonnet 5, released by Anthropic on the same day, is described by Anthropic as its "most agentic Sonnet model yet," with meaningfully better reasoning, tool use, and coding ability than the prior Sonnet 4.6 generation.
Where Sonnet 5 Fits
Inside Base44, Sonnet 5 is positioned as a strong everyday-building option: a model that balances speed and quality well enough for quick iterations, writing, refactoring, and troubleshooting without the latency or cost overhead of the platform's largest models. Builders can select it directly from the model picker, or leave the AI chat on Automatic and let Base44 route requests to the best available model per turn.
Part of a Broader Model Refresh
Sonnet 5's arrival is part of a fast-moving stretch for Base44's model lineup, landing right after Base 1 and ahead of GPT-5.6 Terra and Sol the following week. Notably, Sonnet 5 later became the required model for image and PDF-based turns in Superagent conversations regardless of which default model a workspace configures, underscoring its role as a multimodal-capable option Base44 leans on even after introducing cheaper defaults.