Anthropic Topic

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Anthropic develops the Claude model family with AI safety at its core mission. This topic tracks model releases, safety research, and funding updates. The YZ Index tracks Claude models weekly across code execution, integrity rating, and WDCD instruction compliance tests, providing independent third-party data beyond vendor self-assessment.

This vendor's models · Current YZ Index scores

Claude Opus 4.7 90.9 Claude Sonnet 4.6 88.1

Anthropic Releases Fable 5 but Silently Downgrades Model; Researchers Cancel Subscriptions and Tensions with Open Source Community Intensify

Anthropic released the Fable 5 model with silent downgrade mechanisms that degrade performance, causing researchers to cancel subscriptions and intens

Anthropic Walks Back Policy That Could Have ‘Sabotaged’ AI Researchers Using Claude

The company changed course after researchers spoke out against the policy, which would have covertly limited Claude’s ability to develop competing AI

Anthropic’s Dario Amodei has just one direct report

If you doubted his genius, doubt no more.

Anthropic Launches Mythos and Fable Models, Unveils Advanced AI Safety Framework

Anthropic has officially launched two new AI models, Mythos and Fable 5, alongside a safety framework called the Advanced AI Framework, which highligh

Cybersecurity researchers aren’t happy about the guardrails on Anthropic’s Fable

Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.

How Justin Ernest invested nearly $500M into hot startups without a traditional VC fund

Instead of spending a year raising a formal venture fund, the Sabertooth VC founder used a captive network of LPs to invest in startups like Anthropic

Anthropic’s Claude Fable 5 is a version of Mythos the public can access today

Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in h

Anthropic’s Fable 5 can make weirdly fun video games with the click of a button

Anthropic's Claude Fable 5 is going to be a big hit with the web's vibe coders.

Anthropic says these topics are too dangerous to let its Fable 5 model talk about

New frontier model refuses cybersecurity, biology, and chemistry queries.

Anthropic’s Claude Fable 5 is a version of Mythos the public can access today

Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in h

Anthropic Offers Mythos Upgrade for Cyber Partners and a ‘Safe’ Version for the Rest of You

Anthropic is releasing Claude Mythos 5 to trusted organizations and Claude Fable 5 to the public, a version it says can’t be used for cyberattacks.

Anthropic Launches Claude Fable 5, Performance Greatly Improved Based on Mythos Architecture

Anthropic recently unveiled the new Claude Fable 5 model, built on the Mythos underlying architecture, marking another major breakthrough in large lan

Following Anthropic, OpenAI files confidentially for IPO

The filing comes a little more than a week after its main rival, Anthropic, also filed to go public, ramping up the race between the two AI firms.

Notion restores access to Anthropic after service disruption

Notion's head of product said he was "astonished" at “the amount of people RT-ing this."

Claude Opus 4.8 Collapses Late at Night! "Service is busy" Floods Screens at 2:30 AM on May 6, Shattering Developers' Code Dreams Worldwide

At 2:30 AM on May 6, 2026, Anthropic's latest AI model, Claude Opus 4.8, experienced a global service crisis, with developers unable to use Claude Cod

OpenAI and Anthropic May Be Rivals, but Investors Aren’t Picking Sides

“Why wouldn’t you want to be in both Pepsi and Coke?” says one venture capitalist. “It’s the same here.”

Ahead of its IPO, Anthropic’s Daniela Amodei shrugs off doubts about AI’s returns

Anthropic has been growing at a breakneck pace. The company announced that annualized revenue crossed $47 billion in May, up dramatically from roughly

The AI IPO Race Heats Up, DOGE Whistleblower Sues Elon Musk, and Instagram Gets Hacked

On Uncanny Valley, we dive into the IPO bonanza that the top AI companies are embarking on to the point where some real estate listings are looking fo

Anthropic Files for IPO, Marking AI's Shift from Hype to Enterprise Utility

In 2025, Anthropic filed an IPO prospectus with the SEC, marking the AI industry's transition from early hype to mature commercialization. The move is

OpenAI and Anthropic Sign Letter to Prevent AI-Developed Biological Weapons

Leading AI labs, executives, and scientists are sending a letter to lawmakers urging them to improve tracking of synthetic DNA sequences that could be