On 2026-07-28 Anthropic (@AnthropicAI) tweeted that its own research on recursive…

Brief

Author @daniel_mac8 highlights a 2026-07-28 Anthropic tweet saying their June 2026 research on recursive self‑improvement supports pacing tools and that the CEO, several co‑founders, and senior staff signed the Pacing the Frontier petition; the author interprets this as near‑confirmation that Anthropic (and possibly OpenAI) have achieved RSI in top internal models.

Why it matters

On 2026-07-28 Anthropic (@AnthropicAI) tweeted that its own research on recursive self‑improvement—published “last month” (June 2026)—argues for tools to deliberately pace AI development; the tweet notes the company’s CEO, several co‑founders, and senior staff signed the Pacing the Frontier petition (pacingthefrontier.com), a statement backed by over 1,000 frontier AI employees.

Key details

Author @daniel_mac8 claims Anthropic’s public remark is “the closest thing you’ll get to a confirmation” that Anthropic—and “probably OpenAI too”—have achieved recursive self‑improvement (RSI) with their most advanced internal models.

Official Anthropic account:

“Our own research on recursive self-improvement, published last month, points to the need for tools to deliberately pace the frontier of AI development so society can prepare.”

Closest thing you’ll get to a confirmation that Anthropic (and probably OpenAI too) have achieved RSI with their most advanced internal models.

Anthropic (@AnthropicAI)

We support this petition, signed by our CEO, several co-founders, and senior staff.

Our own research on recursive self-improvement, published last month, points to the need for tools to deliberately pace the frontier of AI development so society can prepare. We’re glad to see broad agreement across the field. pacingthefrontier.com/

Link

Pacing the Frontier

A statement from over 1000 employees of frontier AI companies
pacingthefrontier.com

— https://nitter.net/AnthropicAI/status/2082228994653696371#m