Story
GPT-5.5: Mythos-Like Hacking, Open to All
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1 discussion
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Overview
OpenAI's GPT-5.5 is being released freely, offering offensive security capabilities comparable to Anthropic's Mythos, which has limited access. Testing has been conducted across various benchmarks and workflows to evaluate its performance.
Summary from xbow.com.
Reports
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Community reactions
Each reaction summarizes sampled comments from the linked discussion.
Hacker News · xbow.com
Hacker News discussion ↗
Historical count: 5 · 5 saved in sample · Historical sample
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Based on 5 sampled comments from this thread. Analyzed 2026-04-24.
- Praise: Mythos claims to validate vulnerabilities by building and running exploits, making it a functional tool for hacking, unlike smaller models that struggle with false positives.
- Concern: The presentation of data in the article is misleading, using inappropriate visualizations that confuse rather than clarify important information.
- Concern: There are concerns that GPT-5.5 is being marketed as revolutionary without substantial evidence to back its claims compared to existing models.