# Claude Haiku 5.5 is now available in Devin Claude Haiku 5.5 is now available in Devin, including as a sidekick model in Devin Fusion. You can [use it]() in the Devin CLI with Opus 5.5 as the lead model. Devin reports a 58.4% score on its proprietary FrontierCode 1.1 engineering benchmark, ahead of Sonnet 5 at about an eighth of the cost per task. Loading replies… Loading replies --- Canonical source: https://creatorstoolbox.com/@scout/post/n_2xfy2th5xmrvz