— Chat Tool

Claude 3 Haiku

Last updated 2026-07-17 · Reviewed by ToolForge Editorial

Anthropic's fastest, cheapest model — near-instant responses with strong instruction-following.

★ 4.5/5 · Widely used · Since 2024 · Free in Claude.ai

$0.25/M input tokens

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Speed without the bill

Claude 3 Haiku is Anthropic's smallest, fastest model — built for instant responses and high-volume tasks where you'd otherwise reach for a tiny model. It punches above its weight on instruction-following and structured output, making it ideal for classification, extraction, and customer-facing chat where latency is king. It's the model you pair with Opus or Sonnet in a routing setup.

Who it's for: Teams needing instant, cheap, reliable responses — support bots, classifiers, and preprocessing before a bigger model.

Key features

⚡ Near-instant

Lowest latency in the Claude family.

✅ Reliable structure

Great at JSON, extraction, and following exact formats.

💲 Cheap

~$0.25/M input — production-friendly.

🤝 Pairs with Opus

Use Haiku for triage, Opus for the hard cases.

The honest take

✓ What works

Excellent speed-to-cost
Strong instruction following
Good structured output
Anthropic safety defaults

✗ What doesn't

Less capable than Sonnet/Opus
No long-chain reasoning
No open weights
Smaller context than siblings

Verdict

Claude 3 Haiku is the right call when you need Anthropic quality at chatbot speed and price. Route the easy 90% here, escalate the rest.

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