Amodei wrote that coordinating on pace would need an antitrust waiver. Altman said OpenAI would not wait for one. Both lines are now in a lawsuit.

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Four consumers filed a class action in the Northern District of California on 18 September, naming Anthropic, OpenAI, SpaceXAI and Google. Buist v. Anthropic PBC alleges a horizontal agreement to slow the rate at which the four improve competing products, contrary to section 1 of the Sherman Act.

Bloomberg Law reported the filing. It seeks treble damages and an injunction, and demands a jury.

The waiver sequence is the spine of the case

Amodei’s essay said government mediation would help and that a narrow waiver would be needed for certain safety conversations. The complaint’s answer is flat: no such waiver exists, Congress has enacted no exemption, and no agency has compelled the conduct.

Two days later Altman said OpenAI did not intend to wait for an antitrust exemption or legislation. The following day OpenAI’s policy chief Chris Lehane confirmed the company had already been working with Anthropic and Google...

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