Claude Haiku 4.5 Deep Dive

Master Claude Haiku 4.5 for fast-and-cheap work. Learn the canonical workloads (real-time chat, classification, sub-agent calls inside larger orchestrations, high-volume routine extraction), latency targets, cost optimisation patterns, the quality ceiling vs Sonnet, and the design pattern of using Haiku as the default and escalating to Sonnet / Opus only when needed.

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Lessons in This Topic

Work through these 6 lessons in order, or jump to whichever is most relevant.

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Haiku 4.5 Overview

Advanced
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Fast & Cheap Positioning

Advanced
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Haiku Workload Patterns

Advanced
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Latency Targets

Advanced
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Cost Optimisation

Advanced
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Haiku-First Design Pattern

Advanced