anthropic/claude-4.5-haiku

Claude Haiku 4.5 gives you similar levels of coding performance but at one-third the cost and more than twice the speed

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Claude Haiku 4.5

Claude Haiku 4.5 is the fastest model in the Claude 4 family, optimized for quick questions, real-time applications, and high-volume workloads. It delivers instant responses with lower latency while maintaining strong reasoning capabilities across a wide range of tasks.

What you can do with this model

  • Chat and Q&A — Get instant answers to questions, explanations, and creative writing
  • Content generation — Write emails, articles, scripts, and other text-based content quickly
  • Code assistance — Write, debug, and explain code across multiple programming languages
  • Data analysis and extraction — Process text, summarize documents, and extract structured information
  • Research and brainstorming — Explore ideas, generate outlines, and refine concepts
  • Conversational interfaces — Power chatbots and interactive applications with natural dialogue

Model details

Family: Claude 4 Speed: Fastest in the Claude family
Context Window: 200K tokens

Claude Haiku 4.5 excels at straightforward tasks and is ideal when speed and cost-efficiency are priorities.

Use cases

  • Customer support automation
  • Real-time content moderation
  • Quick research summaries
  • Interactive tutoring systems
  • Rapid prototyping and iteration
  • High-volume API applications