We’re happy to share that Claude 4.5 Haiku has officially joined the model lineup in Pickaxe. You’ll now see it listed beside Claude 4.5 Sonnet when choosing your AI model in the Builder.
About Claude 4.5 Haiku
Anthropic launched Haiku 4.5 as the most compact model in its latest generation of LLMs. It’s designed for speed, affordability, and strong reasoning performance that comes impressively close to much larger models.
Key highlights:
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Roughly 90% of Sonnet 4.5’s performance at a fraction of the cost
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Twice as fast and perfect for real-time apps like chat assistants and coding copilots
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Now includes reasoning, actions, and image upload capabilities
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Claimed by Anthropic to be its safest model yet, earning an AI Safety Level 2 rating
Available now in your Model dropdown under Anthropic → Claude 4.5 Haiku.