A solo builder has mapped out Anthropic's Claude models, categorizing them by their intended use cases rather than just their capability. Haiku 4.5 is designated for high-volume, simple tasks, while Sonnet 5 serves as the workhorse for everyday development and coding. Opus 4.8 is reserved for complex reasoning and challenging problems, and Fable 5 represents the highest-capability model for rare, large-scale tasks. The author emphasizes that Sonnet 5, as the versatile workhorse, likely offers the most significant impact on productivity and cost for most individual developers. AI
IMPACT Provides a practical framework for developers to optimize AI model selection for cost and performance in their daily workflows.
RANK_REASON The item is an opinion piece and guide from a user of AI models, not a direct announcement from a frontier lab.
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