Altman: "I agree with Dario that we need to pace the frontier"

Hours after Dario Amodei published "We Must Pace the Frontier", Altman quote-tweeted Amodei's announcement. He wrote that he agreed the frontier must be paced, that this had been a main topic inside OpenAI in recent weeks, and that OpenAI would copy Anthropic's commitment to independent evaluators with employee-like access, with "more to share soon". Musk ("Dario is right") and Hassabis posted endorsements the same day, so all three other leading Western lab heads publicly backed the essay within one day. This is the source of the secondary claim in the pace-the-frontier entry that OpenAI followed the evaluator commitment. Text and date verified via X's syndication endpoint on 2026-09-29.

I agree with Dario that we need to pace the frontier. This has been a primary topic of discussions we've had at OpenAI in recent weeks.

Committing to having independent evaluators with employee-like access is a great idea, and we will do the same. We'll have more to share soon.

Quoting @DarioAmodei: We Must Pace the Frontier: I’ve written a new essay on why the AI industry should slow down, with a three-part plan for doing so.

Anthropic is unilaterally committing to the first of these steps. We’ll provide third-party evaluators with permanent, employee-level access to our

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Archived 2026-09-29 via syndication.