# Claude Opus 5.5 Now Builds in Lovable

By Steven Van · 2026-09-22

Opus 5.5 matches Opus 5's build quality in Lovable while using up to 48% fewer steps, per Lovable's internal benchmarks.

[Lovable](<https://creatorstoolbox.com/tools/lovable>) now builds with Claude Opus 5.5. In Lovable's internal tests, the new model matched Opus 5 on both new app builds and iterative code fixes, but used up to **48% fewer steps** to get there.

Lovable also reports 4 to 6% higher scores on its verification-discipline benchmark, which measures whether a model checks a change enough and then stops rather than re-opening the browser or repeating checks, with up to **57% fewer steps** on that measure. Lovable frames the change as faster builds with less waiting on long edits, not a change in what gets shipped. Read the [announcement](<https://x.com/i/status/2102441067199295971>) for more.

![Lovable](<https://creatorstoolbox.com/images/lovable-logo.png>)

Lovable

Describe a web app in plain language and get a working full-stack build — UI, database, and deployment — then iterate by chatting with the AI.

[View Lovable →](<https://creatorstoolbox.com/tools/lovable>)

[Original source](<https://x.com/i/status/2102441067199295971>)

[Read Claude Opus 5.5 Now Builds in Lovable on Creators Toolbox](<https://creatorstoolbox.com/blog/lovable-claude-opus-5-5-now-builds-in-lovable>)

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Canonical source: https://creatorstoolbox.com/blog/lovable-claude-opus-5-5-now-builds-in-lovable