OpenAI has officially commenced the GPT-5.5 Bio Bug Bounty program, an initiative aimed at bolstering defenses against emerging biological threats. As artificial intelligence technology progresses, the capabilities of malicious actors to misuse it for generating hazardous biological content significantly increase. This unsettling trend raises alarms amongst cybersecurity experts and biosecurity professionals regarding the potential for advanced persistent threats (APTs) and individual attackers to exploit large language models, accelerating harmful biological research.
In response to this evolving and concerning risk landscape, OpenAI is extending an invitation to cybersecurity researchers, biosecurity specialists, and AI red teamers to rigorously test the limits of its latest model. The fundamental objective of this initiative is to identify critical vulnerabilities and logical inconsistencies within the model before they can be exploited by malicious entities in real-world situations.
One of the program’s most demanding technical challenges is the pursuit of a “universal jailbreak” specifically designed for the GPT-5.5 model. Within the domain of AI security, a jailbreak refers to a specialized prompt crafted to breach the built-in safety filters and ethical boundaries of the model. Participants are charged with the task of developing a solitary, universal prompt capable of compelling the model to successfully respond to a stringent five-question biosafety challenge.
Researchers must execute this potentially vulnerable attack from a clean chat session, ensuring that their efforts do not trigger any automated moderation warnings or backend alerts. This complex process necessitates a deep understanding of prompt engineering, alongside a nuanced grasp of how language models manage intricate biological inquiries. The testing environment for this bounty is strictly confined to the GPT-5.5 operating within Codex Desktop, thus enhancing the focus and security of the initiative.
The stakes associated with the pursuit of a genuine universal jailbreak are notably high, and the accompanying financial rewards reflect the intricacy of the task. OpenAI’s bounty program follows a structured timeline and includes specific reward tiers for researchers who successfully disclose vulnerabilities. Key aspects of the program include a top prize of $25,000 designated for the first individual able to answer all five biosafety questions using a single prompt. Additionally, smaller discretionary awards may be awarded for partial successes that still provide valuable insights into potential risks.
OpenAI opened applications for this initiative on April 23, 2026, which will be accepted on an ongoing basis until the deadline of June 22, 2026. The active testing phase has been set to commence on April 28, 2026, and is scheduled to end by July 27, 2026. To ensure responsible handling of sensitive biological information, access to the Bio Bug Bounty program is highly restricted. OpenAI plans to send direct invitations to a vetted list of accredited bio red teamers while concurrently considering new applications submitted through its official entry portal.
Researchers eager to participate must submit their full name, organizational affiliation, and pertinent technical experience in fields such as AI security or biology. Upon acceptance, researchers must possess an active ChatGPT account to engage with the testing platform. Given the inherent sensitivity surrounding biological threat intelligence, all participants are required to sign a strict Non-Disclosure Agreement (NDA). This legally binding document prevents the public disclosure of any gathered testing data, including all engineered prompts, model responses, security findings, and any direct correspondence with the OpenAI engineering team.
This specific Bio Bug Bounty initiative functions in conjunction with OpenAI’s broader efforts in security and threat analysis. For cybersecurity professionals interested in addressing traditional software vulnerabilities or other AI logic flaws, participation in the ongoing Safety Bug Bounty and Security Bug Bounty programs remains available. By crowdsourcing advanced threat detection, OpenAI aims to develop more robust safeguards around cutting-edge AI systems.
Overall, this proactive approach in mitigating biological risks associated with advanced AI serves not only as a defense mechanism but also as a significant step toward fostering responsible AI development. The success of the Bio Bug Bounty program could play a crucial role in ensuring the safe and ethical deployment of AI technologies while safeguarding against potential biological threats.