---
title: "xAI, OpenAI, and Anthropic cosign AEF-1 evaluator standard"
url: https://www.parallelquant.com/posts/xai-openai-and-anthropic-cosign-aef-1-evaluator-standard-17d736
source_name: "Latent Space"
source_url: https://www.latent.space/p/ainews-aef-1-standard-emerges-for
published: 2026-09-15T04:50:36.000Z
topics: ["policy", "research"]
publisher: "Parallel Quant"
---

# xAI, OpenAI, and Anthropic cosign AEF-1 evaluator standard

*2026-09-15 · Source: [Latent Space](https://www.latent.space/p/ainews-aef-1-standard-emerges-for)*

A new standard called AEF-1 has emerged for third-party AI evaluators, with xAI, OpenAI, and Anthropic all cosigning it.

**Why it matters:** A shared standard for independent evaluation is a concrete step toward external accountability for frontier AI systems, rather than labs grading their own homework. It complements recent moves like Amodei's call for AI oversight and the broader industry debate over development pacing and safety governance.

**Topics:** policy, research

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Read the original: https://www.latent.space/p/ainews-aef-1-standard-emerges-for
Canonical: https://www.parallelquant.com/posts/xai-openai-and-anthropic-cosign-aef-1-evaluator-standard-17d736
Published by Parallel Quant — https://www.parallelquant.com