Cheaper top-tier AI meets a warning about agent liability
Anthropic and OpenAI cut prices, Google gave voice agents a face, the FTC chair said companies answer for their agents, and a Senate bill would make AI labs publish model cards.
Anthropic says Opus 5.5 matches Fable 5.1 on most work for 40% less than Opus 5
Cost has been the main reason teams kept agents on short leashes. At these prices, an agent that works through a full contract set, a support queue, or a quarter of invoices overnight fits an ordinary budget, so expect requests to use it. The data questions stay the same at any price. Before company or customer information goes in, someone should know where prompts and outputs are stored and whether the account actually has zero data retention switched on.
At a glance
- Anthropic released Claude Opus 5.5 on September 22, rated at Fable 5.1's level for 40% less than Opus 5.
- OpenAI released GPT-6 Sol and GPT-6 Luna on September 22, cutting API prices by half or more.
- Google launched Live Avatar on September 24: real-time talking video avatars in Gemini Enterprise, watermarked with SynthID.
- FTC Chair Andrew Ferguson said on September 25 that the people who instruct AI agents are responsible for what the agents do.
- Four senators introduced the AI Systems Transparency Act on September 24; the FTC would enforce new model disclosure rules.
- Google, OpenAI, and Anthropic are reportedly planning a FINRA-style industry body to set testing standards for frontier models.
Worth deciding this week
- Check whether your Anthropic account has zero data retention before approving Opus 5.5 for real data.
- Remind staff that work data goes only into company-approved AI accounts, and add Sol and Luna to your AI list.
- Require a call-back to a known number before acting on payment or account changes requested by video.
- Confirm each agent in production logs its instructions and actions somewhere a reviewer can read them.
- Ask each AI vendor you use for its current model card and data terms, and file them with the approval.