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Top Architect
Top Architect
Apr 23, 2026 · Industry Insights

Inside the OpenAI Codex Leak: GPT‑5.5, Glacier, Heisenberg and What They Reveal

A recent OpenAI Codex leak exposed internal models—including GPT‑5.5, Glacier, Heisenberg and Arcanine—triggering analysis of the accidental staging‑to‑production push, the shift toward agentic AI, speculative new architectures, and the community debate over whether the incident was a genuine engineering mishap or a calculated marketing move.

AIGPT-5.5Glacier
0 likes · 11 min read
Inside the OpenAI Codex Leak: GPT‑5.5, Glacier, Heisenberg and What They Reveal
Machine Learning Algorithms & Natural Language Processing
Machine Learning Algorithms & Natural Language Processing
Mar 28, 2026 · Artificial Intelligence

Anthropic’s ‘Mythos’ Model Leaked: Claims to Outperform Claude Opus 4.6 Across the Board

A misconfigured CMS exposed internal documents that reveal Anthropic’s new Claude Mythos (codenamed Capybara), a top‑tier model said to surpass Opus 4.6 in coding, reasoning and security tests, while also posing unprecedented network‑attack risks that have kept the company from releasing it.

AI modelAnthropicClaude Mythos
0 likes · 6 min read
Anthropic’s ‘Mythos’ Model Leaked: Claims to Outperform Claude Opus 4.6 Across the Board
AI Insight Log
AI Insight Log
Mar 28, 2026 · Artificial Intelligence

Anthropic’s Leaked Mythos Model Claims to Outperform Opus 4.6 – Why Release Is Delayed

A leaked internal Anthropic blog reveals the upcoming Claude Mythos (codenamed Capybara) model, touted as a step‑change over Opus 4.6 in programming, academic reasoning, and cybersecurity, while highlighting unprecedented security risks, early access for security professionals, and high compute costs that postpone a full launch.

AI safetyAnthropicClaude Mythos
0 likes · 5 min read
Anthropic’s Leaked Mythos Model Claims to Outperform Opus 4.6 – Why Release Is Delayed