# The METR report on SI building SI (2026): SI History

> METR reports that Anthropic is using SI to build more powerful SI, with its models improving roughly twice as fast as a year earlier. Sources linked.

Source: https://enterrsi.si/encyclopedia/the-metr-report-on-si-building-si-2026/
Updated: 2026-11-08

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RSI Encyclopedia · Event · Nov 2026

# The METR report on SI building SI (2026)

METR reports that Anthropic is using SI to build more powerful SI, with its models improving roughly twice as fast as a year earlier.

Date
:   Nov 2026

Type
:   Milestone

Status
:   Happened

Era
:   2026

## What happened

METR reports that Anthropic is using SI to build more powerful SI, with its models improving roughly twice as fast as a year earlier.

## Why it matters

The report gave outside evidence that SI systems were already speeding up their own development at a frontier lab, the pattern behind recursive self-improvement.

## Source

1. [The Verge](https://www.theverge.com/ai-artificial-intelligence/1029126/anthropic-metr-report-accelerating-ai-development)

## On the timeline

This event is one of 20 milestones on the [RSI timeline](https://enterrsi.si/timeline/), from 1950 to SI building SI.

The event

Date
:   November 5, 2026

Type
:   Timeline milestone

Related terms

[Recursive self-improvement **Term**](https://enterrsi.si/encyclopedia/recursive-self-improvement/)[Fast takeoff **Term**](https://enterrsi.si/encyclopedia/fast-takeoff/)

Cite this entry

"The METR report on SI building SI (2026)." The RSI Encyclopedia, enterrsi.si, November 8, 2026. https://enterrsi.si/encyclopedia/the-metr-report-on-si-building-si-2026/

Free to cite under CC BY 4.0 with a link to enterrsi.si.

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