Amodei says labs should slow capability gains and embed outside evaluators

Why this matters

The practical test of a slowdown is what shipped afterwards. Amodei argues for more time before the next capability jump, and for outside reviewers who can see training and deployment the way employees do. Ten days later Anthropic released Opus 5.5 and OpenAI released GPT-6 Sol and Luna. Those are real products you can use. They are also evidence that "pace" did not mean "stop."

If you depend on these models at work, the essay does not change your API. It tells you the chief executive of one lab thinks recursive self-improvement — models helping build the next models — is already underway, and that he wants that loop checked by people who do not work for the lab.

What we know

• ✓ In "We Must Pace the Frontier," Amodei writes that since roughly summer 2026 AI has been advancing much faster, driven mainly by AI's growing ability to build the next generation of AI, and that this recursive self-improvement should be pursued very carefully if at all. ^[1]
• ✓ He says pacing does not mean halting training. It means taking enough time to align and safeguard models, and for third-party evaluators to check that work. ^[1]
• ✓ The first of his three steps is embedded evaluators with employee-like access to verify safety practices and report incidents. He writes that Anthropic is unilaterally committing to that step. The second step is coordination among frontier companies in democracies. The third is global coordination, which he treats as harder. ^[1]
• ✓ The Straits Times reported that on 22 September, days after the heads of Anthropic and OpenAI had called for a slowdown, Anthropic released Opus 5.5 and OpenAI released GPT-6 Sol and Luna. ^[2]

What is unclear

• ? Whether any lab other than Anthropic has agreed to embedded evaluators with the access Amodei describes. The essay says Anthropic is committing. It does not show a signed agreement from anyone else.
• ? What, concretely, Anthropic declined to ship because of the essay. Opus 5.5 and Sonnet 5.5 both came out later in September.