Pricing and Cost Advantage

Claude Haiku 4.5 is offered to subscribers of Anthropic’s Claude web and app plans at no extra charge, while API access is priced at $1 per million input tokens and $5 per million output tokens. This pricing is substantially lower than Sonnet 4.5’s $3 per million input and $15 per million output, and Opus 4.1’s $15 per million input and $75 per million output, making Haiku 4.5 a cheaper drop‑in replacement for older models like Haiku 3.5 and Sonnet 4.

Performance Benchmarks

On the SWE‑bench Verified test, which evaluates coding ability, Haiku 4.5 achieved a score of 73.3 percent, slightly surpassing Sonnet 4’s 72.7 percent. Anthropic also reports that Haiku 4.5 exceeds Sonnet 4 on tasks involving computer usage. While the results are self‑reported, the model’s performance approaches that of OpenAI’s GPT‑5 on the same benchmark set.

Target Use Cases and Multi‑Model Strategy

Anthropic positions Haiku 4.5 for real‑time, low‑latency applications such as chat assistants, customer‑service agents, and pair programming. The company suggests that in multi‑model workflows, Sonnet 4.5 can handle complex, multi‑step planning while coordinating multiple Haiku 4.5 instances to execute subtasks in parallel, effectively acting as fast workers that boost overall throughput.

Availability and Documentation

Developers can access Haiku 4.5 through the API, and Anthropic has released a system card and detailed documentation to support integration. The model is intended to work alongside Sonnet 4.5 in mixed‑model pipelines, offering a blend of high‑level reasoning and rapid execution.

Used: News Factory APP - news discovery and automation - ChatGPT for Business