OpenAI's GPT-6 Cyber offensive security model
- OpenAI released GPT-6 Cyber, a model built for offensive security research, restricting access to approved Daybreak Red customers via API and Codex with broader access planned over time.
- On Linux kernel testing, the model confirmed 1,724 bugs and built working exploits for 948 of them, compared to 166 for its predecessor GPT-5.6 Sol on the same test.
- It also found 81 previously unknown Firefox vulnerabilities, Mozilla has released fixes for many of them, and OpenAI classifies the model at its highest internal cyber-risk level, "Critical".
The model substantially outperforms its predecessor on exploit construction benchmarks and has already produced real-world results, with Mozilla patching Firefox vulnerabilities the model discovered. OpenAI's decision to restrict access and train the model to respect authorized scope reflects the tradeoffs involved in deploying highly capable offensive security tooling.