Lovable: Chat Latest AI Model Option for App Features
LovableLovable added Chat Latest (openai/chat-latest) as a new selectable model for apps' built-in AI features, giving builders access to the same Instant conversational model currently powering ChatGPT's default experience. The model handles text and image input and responds directly without a reasoning step, but since OpenAI regularly updates the model and pricing behind the "chat-latest" name, Lovable recommends numbered GPT models for features that need predictable cost and behavior.
Key Takeaways
- Chat Latest gives apps access to the same Instant model behind ChatGPT's default chat experience, without Lovable pinning a specific model version.
- The model answers directly instead of reasoning first, so it can't expose a visible thinking process the way reasoning models can.
- It accepts text and image input and responds with text only.
- Because OpenAI can silently swap the model and pricing behind the "chat-latest" name at any time, Lovable explicitly warns builders to use a numbered GPT model when cost predictability matters.
- Chat Latest is not eligible for OpenAI's priority processing tier, so latency-sensitive features may still be better served by other models.
- The addition is opt-in only — existing app AI features that already specify a model are unaffected by this release.
A New Model Option for App AI Features
Lovable added Chat Latest (openai/chat-latest) as a selectable model for the AI features built into published apps. Chat Latest points to the same Instant model that currently powers ChatGPT's default conversational experience, tuned specifically for fast, conversational chat rather than for tasks that benefit from extended reasoning.
How It Behaves
Chat Latest accepts both text and images as input and responds with text. Unlike Lovable's reasoning-capable models, it answers directly rather than reasoning through a problem first, so it cannot expose its thinking process, and it is not eligible for OpenAI's priority processing tier.
A Moving Target, By Design
The defining trait of Chat Latest is that it isn't a fixed model. OpenAI regularly updates which underlying model snapshot sits behind the "chat-latest" name, and both its behavior and its cost can shift whenever that happens. Lovable's own guidance to builders reflects that trade-off directly: pick a numbered GPT model instead of Chat Latest for any feature where predictable responses and predictable cost matter more than always running on OpenAI's newest chat-tuned model.
Why It Matters
For builders who want their app's chatbot or assistant features to automatically ride OpenAI's latest conversational improvements without manually swapping model versions, Chat Latest offers a lower-maintenance option. It's a narrower, opt-in addition rather than a change to any existing default — apps that already specify a model are unaffected.