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Everything on saas-stack

Articles, guides, and breakdowns tagged "saas-stack" — 1 post.

Claude Sonnet 5 vs Haiku 4.5: When to Use Each in Your SaaS API StackAI Tools

Jun 30, 2026 · 6 min read

Claude Sonnet 5 vs Haiku 4.5: When to Use Each in Your SaaS API Stack

Sonnet 5 is the reasoning powerhouse. Haiku 4.5 is 3-4x faster at half the price. Here is exactly when to use each model to cut costs without sacrificing quality.

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