Anthropic Cuts Claude Haiku 5.5 Prices 90% to $0.10/$0.50
Summary
Anthropic cuts Claude Haiku 5.5 to $0.10/$0.50 per million tokens for prompts up to 100,000 tokens, 90% below Haiku 4.5. Microsoft says its Maia chips become the primary inference system for its products from 2027, starting with Copilot. Zenity Labs says one prompt exposed every AgentCore agent in an AWS account.
Key Points
- Simon Willison measures the new tokenizer using about 1.25x as many tokens for the same prompt.
- AWS calls the AgentCore behavior documented behavior, not a vulnerability.
- Anthropic says Sonnet 5.5 cache reads drop from $0.20 to $0.10 per million tokens.