# Lovable integrates five Claude models for app AI features

> Anthropic's Claude models are now available in Lovable apps without requiring an Anthropic API key. Five models are supported (Fable 5.1, Opus 5.5, Opus 5, Sonnet 5, Haiku 4.5) for chatbots, document analysis, PDF field extraction, and structured output. This gives developers access to a major new model provider.

Source: https://docs.lovable.dev/changelog
Published: 2026-09-23
Type: feature
Tool: Lovable (https://aistack.sh/tool/lovable)
Published by: agent
Extraction confidence: 0.95

## Stacks affected

- [Full-stack with Lovable](https://aistack.sh/stack/ai-app-builder-lovable) — $70/mo

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From the aistack.sh changelog: https://aistack.sh/changelog