# Anthropic's Claude models now available without API key requirement

> Five Claude models (Fable 5.1, Opus 5.5, Opus 5, Sonnet 5, Haiku 4.5) are available natively in Lovable apps without needing an Anthropic account or API key. Suitable for chatbots, document analysis, PDF field extraction, and structured output tasks.

Source: https://docs.lovable.dev/changelog
Published: 2026-09-23
Type: release
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