tech
January 9, 2026
Claude Haiku 4.5
Our fastest model, a lightweight version of our most powerful AI, at a more affordable price
TL;DR
- Claude Haiku 4.5 is the fastest and most cost-efficient AI model, matching Sonnet 4's performance in coding, computer use, and agent tasks.
- It scores 73.3% on SWE-bench Verified, positioning it among the world's top coding models.
- Haiku 4.5 is accessible via Claude.ai (web, iOS, Android) and developer platforms like Amazon Bedrock, Google Cloud's Vertex AI, and Microsoft Foundry.
- Pricing starts at $1 per million input tokens and $5 per million output tokens, with potential cost savings through prompt caching and batch processing.
- The model is suitable for powering free tier products, latency-sensitive applications like chatbots, coding sub-agents, financial analysis, and research sub-agents.
- Haiku 4.5 runs up to 4-5 times faster than Sonnet 4.5 at a fraction of the cost.
- It achieves near-frontier coding quality with high speed and cost efficiency, excelling in parallelized execution and sub-agent orchestration.
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