Claude Haiku

Overview

This is a model family overview. For version-specific details, see the individual model entries linked below.

Claude Haiku is the speed-and-cost tier in Anthropic’s lineup. It sacrifices some capability depth compared with Sonnet and Opus but delivers significantly faster responses at a fraction of the price. Haiku is the right choice when throughput, latency, or cost matter more than peak reasoning quality.

Current Latest

Claude Haiku 4.5 remains the efficiency-oriented current reference in this repo snapshot.

Strengths

• Very fast response times — well suited for real-time applications
• Lowest per-token cost in the Claude family
• Surprisingly capable for its tier — handles many tasks that previously required larger models
• Multimodal support (images and text)
• Tool use and structured output support

When to Choose Haiku

Choose Haiku when speed or cost is the primary concern:

• High-volume classification, extraction, and routing tasks
• Real-time chat applications where latency matters most
• Bulk content processing pipelines
• Development prototyping before upgrading to Sonnet/Opus for production
• Cost-sensitive applications that can tolerate occasional quality drops on hard tasks

Access

• Anthropic API (direct)
• AWS Bedrock
• Google Vertex AI
• Claude consumer products (often the default for quick interactions)