Products/AI Tools/OpenMythosActiveVC Report ↗

OpenMythos

A Python-based implementation that reverses-engineers the theoretical Claude Mythos architecture using available research and first principles

AI Tools·Launched Apr 2026·0 upvotes·discord.gg

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REDIRECTED → discord.comsince May 23, 2026 · HTTP 200

CohortClass of 2026

What it is

A Python-based implementation that reverses-engineers the theoretical Claude Mythos architecture using available research and first principles. Designed for researchers and developers exploring advanced transformer models and AI architecture patterns.

HTTP liveness

22 probes since May 23

May 23Jul 15

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

May 23, 2026
First probe — redirected
Redirected offsite
May 7, 2026
TechCrunch
How Anthropic’s Mythos has rewritten Firefox’s approach to cybersecurity
May 7, 2026
ArsTechnica
Mozilla says 271 vulnerabilities found by Mythos have "almost no false positives"
May 4, 2026
+123 stars
11,606 total
May 3, 2026
+197 stars
11,483 total
May 1, 2026
+209 stars
11,286 total
Apr 29, 2026
+173 stars
11,077 total
Apr 28, 2026
+192 stars
10,904 total
Apr 27, 2026
+266 stars
10,712 total
Apr 26, 2026
+287 stars
10,446 total
Apr 25, 2026
+327 stars
10,159 total
Apr 24, 2026
+778 stars
9,832 total
Apr 23, 2026
+1,493 stars
9,054 total
Apr 22, 2026
+2,877 stars
7,561 total
Apr 22, 2026
The Verge
Anthropic’s Mythos rollout has missed America’s cybersecurity agency

Moat

Data moat

weak

Accumulates proprietary data that improves the product over time and that competitors cannot replicate.

weak · 0.70 confidence

Text classification · Jun 2026

Press mentions

5 lifetime · 5 shown

Thu
May 7

TechCrunch

How Anthropic’s Mythos has rewritten Firefox’s approach to cybersecurity

techcrunch.com·Anthropic's Mythos security tool uncovers high-severity bugs in Firefox, helping Mozilla improve browser security.

+1.00

Thu
May 7

ArsTechnica

Mozilla says 271 vulnerabilities found by Mythos have "almost no false positives"

arstechnica.com·Mozilla reports that AI-assisted bug discovery tool Mythos found 271 vulnerabilities in Firefox with minimal false positives.

+1.00

Wed
Apr 22

The Verge

Anthropic’s Mythos rollout has missed America’s cybersecurity agency

theverge.com·Anthropic's Mythos cybersecurity model has been adopted by several US federal agencies but notably excludes CISA, the nation's central cybersecurity coordinator.

0.00

Wed
Apr 22

Hacker News

MythosWatch: Tracking who has access to Anthropic's Mythos AI

mythoswatch.org·Discussion about access controls and permissions for Anthropic's Mythos AI model.

-1.00

Tue
Apr 21

TechCrunch

Sam Altman throws shade at Anthropic’s cyber model, Mythos: ‘fear-based marketing’

techcrunch.com·Sam Altman criticizes Anthropic's new cybersecurity model Mythos as using fear-based marketing to overstate its capabilities.

-1.00

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