# Anthropic Claude models available for app AI features

> Apps can now use Claude models (Fable 5.1, Opus 5.5, Opus 5, Sonnet 5, Haiku 4.5) for chatbots, document analysis, PDF field extraction, and structured output. No Anthropic account or API key required for apps created after May 13, 2026.

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