Azure & Cloud
October 8, 2026Claude Haiku 5.5 in Foundry: $0.10 and the 100K cliff
Claude Haiku 5.5 is GA in Microsoft Foundry at $0.10/$0.50 per million tokens, the same Global Standard list price as GPT-6 Luna, and 90% below Haiku 4.5 on paper. The bills diverge on three lines: a tier that charges 5x on every token once a prompt passes 100K, a tokenizer that counts the same text as 30% more tokens, and an EU Data Zone that Luna offers at $0.12/$0.60 while Claude on Foundry has none.
Claude Haiku 5.5
Anthropic
Microsoft Foundry
Azure
GPT-6 Luna
LLM Cost
Prompt Caching
AI Agents
Model Migration
Data Residency
By Falak Mahmood