Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic’s fastest and most cost-efficient current-generation model, designed for high-throughput applications where latency and price dominate the decision. Released earlier in 2026, it retains the safety and instruction-following characteristics of the Claude 4 family while operating at a budget price tier. Best suited for classification, summarization, customer-service automation, and any task where volume is high and per-request cost must be kept minimal.