Anthropic launched Haiku 5.5, a faster, cheaper model that matches GPT-6 Luna’s price for prompts up to 100,000 tokens. Longer prompts cost more, and its tokenizer can make usage pricier than it first appears. Anthropic also added monthly API credits for Max and Team subscribers.
ORIGINAL LINK: https://simonwillison.net/2026/Oct/7/claude-haiku-5-5/
