AI agents get cheaper as new disclosure rules land
Anthropic and OpenAI shipped models built to work on their own, Gemini learned to talk and act at once, EU AI disclosure duties took effect, and California sent an AI firing bill to the governor.
Cheaper cache reads cut the bill for long-running Claude agents by up to 45%
Agents reread the same files over and over, so the cache discount is where most of the savings land. That makes it realistic to leave an agent working on a contract archive, a support backlog, or a vendor review for days. The harder question is oversight. Someone who starts an agent on Friday and reads its output on Monday has handed off everything in between. Teams should agree on which tasks can run unattended and who checks the result before anyone relies on it.
At a glance
- Anthropic released Claude Fable 5.1 on September 1 and cut cache-read prices by 75%, to $0.25 per million tokens.
- OpenAI began rolling out GPT-6 Astra on September 3, a flagship built for computer use and off by default for enterprise accounts.
- Google released Gemini 3.8 Live on September 15, a voice model that keeps talking while it runs tools, now in Gmail, Docs, and Search.
- EU AI Act Article 50 has applied since August 2: people must be told when they are dealing with an AI system.
- California sent SB 947 to the governor on September 4; it would require human review of AI-driven firing and discipline.
Worth deciding this week
- Pick the tasks your team may hand to an unattended agent, and name who checks the output.
- Find out who holds admin rights in your OpenAI workspace and agree who approves turning Astra on.
- Check which Gemini features are switched on for work Google accounts, and write down the rule for personal ones.
- List customer-facing AI tools that EU residents could use, and check that each one says it is AI.
- List which discipline decisions for California staff start from an automated score or alert.