Trusted access for the next era of cyber defense

📰 Simon Willison's Blog

Learn about OpenAI's Trusted Access for Cyber, a program that enables defensive cybersecurity use cases with fine-tuned models like GPT-5.4-Cyber, and how it compares to Anthropic's Project Glasswing

intermediate Published 14 Apr 2026
Action Steps
  1. Explore OpenAI's Trusted Access for Cyber program to learn about its features and benefits
  2. Compare OpenAI's Trusted Access for Cyber with Anthropic's Project Glasswing to understand the differences and similarities
  3. Fine-tune a model like GPT-5.4-Cyber for a specific cybersecurity use case using OpenAI's API
  4. Verify your identity using Persona to gain access to OpenAI's models for cybersecurity work
  5. Apply for access to OpenAI's best security tools through the Google Form application process
Who Needs to Know This

Cybersecurity researchers and professionals can benefit from this program by gaining access to advanced AI models for defensive cybersecurity use cases, while developers and engineers can learn about the latest developments in AI-powered cybersecurity tools

Key Insight

💡 OpenAI's Trusted Access for Cyber program provides a self-service verification flow for users to access advanced AI models for cybersecurity, democratizing access to these tools

Share This
OpenAI's Trusted Access for Cyber enables defensive cybersecurity use cases with fine-tuned models like GPT-5.4-Cyber #AI #Cybersecurity
Read full article → ← Back to Reads