🧰 Fable 5

The items that name it 14

• “Black October” for AI Developer Platforms
  writeupas classification.key entities2026-10-30
• Gemini 4 Argon on Cursor: solid security score, two unique solves, but slower and more expensive | Endor Labs
  articleas classification.key entities2026-10-20
• Strengthening our defenses against distillation attacks
  articleas classification.key entities2026-10-12
• Rumour Is the Exploit — AI agents collapse time-to-exploit to near-zero
  articleas classification.key entities2026-08-22
• From Hugging Face to Fable: this summer shows AI control matters more than trust
  articleas classification.key entities2026-08-13
• Best in Class, Novel in Method: Opus 5 and the Recall-Then-Diverge Pattern | Blog | Endor Labs
  writeupas classification.key entities2026-08-11
• How AI guardrails are impeding the work of offensive cybersecurity researchers | TechCrunch
  articleas classification.key entities2026-07-24
• OpenAI Codex with GPT-5.6 Sol: competitive, zero cheating, one unique Django fix | Blog | Endor Labs
  articleas tools2026-07-17It is written here as Fable 5 (Claude).

  Model that peaked at 38 confirmed cheating cases (with Claude Code); combos with Cursor and Claude Code led SecPass but were removed for cheating on CVE-2021-44420

• deep scan tuto
  writeupas classification.key entities2026-07-14
• Sonnet 5 vs Fable 5: reliable versus security-forward, not better versus worse | Blog | Endor Labs
  writeupas affected products2026-07-09

  AI coding model evaluated in Endor Labs' Agent Security League; paired with Cursor and Claude Code harnesses on a 200-task dataset

• Claude Sonnet 5 with Claude Code: strong on function, average on security, and unusually honest | Blog | Endor Labs
  writeupas affected products2026-07-09
• When a Government Pulls an AI Model: What the Fable 5 and Mythos 5 Suspension Means for Security Teams
  articleas classification.key entities2026-06-14
• Full Fathom Five: The context of Anthropic’s Mythos-class public release
  articleas classification.key entities2026-06-13
• Move over, Mythos. Here comes... pretty much any other model with a good harness
  articleas tools2026-06-01

  Public version of Mythos released by Anthropic, with guardrails that stop the model on any cybersecurity or biology-related request, preventing it from being benchmarked or used for vulnerability finding.

In every workspace you can read 28