Claude Haiku 4.5: The Fast, Affordable Tier
Anthropic released Claude Haiku 4.5 on October 15, 2025 — its fastest and most cost-effective model. In a world fixated on flagship models, Haiku is the quiet workhorse that makes high-volume AI economically viable.
What it's for
- Speed and cost. Haiku 4.5 is built for low latency and high throughput at a
fraction of the price of the Opus and Sonnet tiers ($1/$5 per million tokens at launch).
- 200K context, 64K output. Plenty for the tasks it's designed for.
- High-volume, well-scoped work. Classification, routing, extraction,
enrichment, first-pass triage — the unglamorous tasks that run millions of times.
Why a cheap tier matters
The biggest cost mistake in production AI is calling the most powerful model for everything. A huge share of real workloads — tagging a ticket, classifying an invoice, routing a message — are perfectly served by Haiku at a tiny fraction of the cost. Smart systems route: small models for easy tasks, big models only where they earn it. That routing is one of the highest-impact cost levers, which we cover in LLM Cost Optimization.
How Internative uses it
We design AI systems that route by difficulty through our AI Studio — Haiku for the high-volume easy path, larger models reserved for the hard cases. The result is the same quality where it matters, at a fraction of the bill. Talk to our team to architect a cost-efficient AI system.