Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war
Which summary reads better? Pick one — models revealed after.Both summaries are AI-generated.
GPT-6 Luna just dropped to $0.10/$0.50 per million tokens—half its predecessor and roughly one-tenth of Claude Haiku 4.5—making it one of the cheapest capable models OpenAI has ever shipped, while Opus 5.5 cut prices 20% ($4/$20) and slashed cache reads 60%. If you're running high-volume app backends or long agentic loops, re-benchmark now: the cheap tier just got dramatically cheaper, cached-context agents get materially cheaper on Anthropic, and models like GPT-5.6 Terra no longer have any pricing rationale.
GPT-6 Luna is now priced at just $0.10/$0.50 per million tokens, making it one of the cheapest high-performance models available. This drastic cost reduction enables scalable deployment of agentic workflows and conversational applications without significant budget constraints, forcing competitors like Anthropic to lower prices to remain viable.