# Claude Opus 5.5 Available in Base44

By Steven Van · 2026-09-22

Base44 added Claude Opus 5.5 as a model option and gave a free two-hour comparison window at launch on 22 September.

**Base44** has added Claude Opus 5.5 to its model lineup for app generation. At launch on September 22, Base44 opened a two-hour window during which builders could compare Opus 5.5 against other models for free, as [announced on X](<https://x.com/i/status/2102437407870058788>).

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Base44

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[Original source](<https://x.com/i/status/2102437407870058788>)

[Read Claude Opus 5.5 Available in Base44 on Creators Toolbox](<https://creatorstoolbox.com/blog/base44-claude-opus-5-5-available-in-base44>)

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Canonical source: https://creatorstoolbox.com/blog/base44-claude-opus-5-5-available-in-base44