OpenAI’s GPT‑5.5 and GPT‑5.5 Pro: Smarter, Faster, and More Dangerous Than Ever

A $25,000 Bio Bug Bounty awards those who can find GPT‑5.5 jailbreaks in Codex Desktop.

OpenAI has done it again. Just when you thought the AI arms race couldn’t get any more intense, the company dropped two new models: GPT‑5.5 and GPT‑5.5 Pro. They’re powering ChatGPT right now for paying subscribers, and soon they’ll be available through OpenAI’s API. But here’s the catch – these models are not only smarter than their predecessors and competitors, they also come with genuinely scary new risks in biosecurity and cybersecurity.

If you’ve been following the rapid evolution of large language models, you know that each generation pushes the envelope further. GPT‑5.5 and its beefier Pro sibling are no exception. According to internal testing, they outperform GPT‑5.4 across the board – and they even beat Anthropic’s Claude Opus 4.7 and Google’s Gemini 3.1 Pro on many challenging benchmarks. But that leap in intelligence brings a darker side: a disturbing know‑how of biological threat creation and network hacking.

Two New Models, One Big Problem

Let’s start with the good news. GPT‑5.5 and GPT‑5.5 Pro excel at solving complex academic problems, using computers as tools, and reasoning through multi‑step tasks. For developers and power users, this means more reliable code generation, better data analysis, and smoother automation. The Pro version, in particular, is aimed at enterprises that need the highest level of accuracy and speed.

But the system card released by OpenAI pulls no punches. Both models show improved knowledge of the protocols required to create biological threats – think pathogens or toxins – as well as the methods needed to successfully hack into networks and systems. In many of these risky areas, GPT‑5.5 and 5.5 Pro actually outperform Claude Opus 4.7 and Gemini 3.1 Pro. That’s a sobering thought, given how seriously Anthropic and Google take safety.

“We have observed that GPT‑5.5 and 5.5 Pro are better at fixing problems with biological protocols, leading to greater success when attempting to manufacture biohazards,” reads a statement from OpenAI’s safety team. “The same goes for offensive cybersecurity tasks – the models simply know more about hacking than any previous version.”

And if you think that’s alarming, consider this: users of Anthropic’s Claude models have recently reported more insecure code being generated by those AIs. The problem isn’t unique to OpenAI – it’s an industry‑wide challenge.

A $25,000 Reward to Break GPT‑5.5

OpenAI isn’t burying its head in the sand. Because the risk rating for these models is so high, the company has added extra safeguards. But they’ve also done something unusual: they launched a “Bio Bug Bounty” for GPT‑5.5. If you can successfully jailbreak the model inside Codex Desktop when faced with a five‑question biosafety challenge, you’ll walk away with $25,000.

The window to apply runs from April 23 to June 22, 2026. It’s an open invitation to red‑teamers, security researchers, and anyone with a knack for breaking AI guardrails. The goal? Find loopholes before malicious actors do. It’s a bold move, and one that shows OpenAI is taking the threat seriously – even if the threat comes from their own creation.

Anthropic’s Nightmare: Claude Mythos Is Too Dangerous to Release

While OpenAI is carefully (and controversially) letting GPT‑5.5 loose, Anthropic is sitting on a model that they say is too risky for the public. Meet Claude Mythos – an AI so good at finding cybersecurity bugs that the company refuses to release it, citing “enormous national security risk.”

That’s not hyperbole. Anthropic’s less‑capable, publicly available Claude Code has already been used to crack FreeBSD – a widely respected, secure operating system. If the weaker version can do that, imagine what Mythos could do in the wrong hands. For now, Claude Mythos remains locked in a research lab, a reminder that raw intelligence without safety is a double‑edged sword.

Running AI Locally? Here’s Your Open‑Source Option

Not everyone wants to rely on cloud‑based APIs or subscription fees. If you’re itching to run a capable language model on your own hardware, you can still download the older, open‑source GPT‑OSS model from Hugging Face. It’s not GPT‑5.5 – you won’t get that cutting‑edge performance – but it’s powerful enough for many tasks, and it runs entirely on your PC.

To get decent speeds, you’ll need an Nvidia GPU with at least 16 GB of memory. Think along the lines of a high‑end card like the RTX 5090. Speaking of which, if you’re in the market for a GPU that can handle local LLMs, you can check out this RTX 5090 on Amazon – it’s a beast for AI workloads. Just remember that GPT‑OSS is a few generations behind, so don’t expect GPT‑5.5‑level smarts. But for privacy‑focused users or offline environments, it’s a solid choice.

The Uncomfortable Truth About Self‑Harm and Safety

Even with all the new guardrails, OpenAI admits that GPT‑5.5 is still open to talking about self‑harm during extended conversations. That’s a troubling oversight, especially for a model that’s otherwise more intelligent and capable. It suggests that while the company has focused heavily on biosecurity and cybersecurity risks, softer – but no less dangerous – conversational harms haven’t been fully patched.

This is a reminder that AI safety isn’t just about stopping hackers and bioterrorists. It’s also about preventing real harm to vulnerable individuals who might turn to a chatbot in a moment of crisis. OpenAI says it’s continuing to refine the model’s behavior, but the fact that this issue made it into the system card – and wasn’t fixed before launch – is concerning.

What’s Next for GPT‑5.5 and the AI Landscape?

For now, GPT‑5.5 and GPT‑5.5 Pro are available to ChatGPT Plus, Team, and Enterprise subscribers. API access is promised “soon,” which means developers will need to prepare for a new wave of applications – and a new wave of potential misuse.

The competition isn’t standing still either. Google is rumored to be working on Gemini 4, and Anthropic is reportedly trying to find a way to safely release a watered‑down version of Claude Mythos. But the pattern is clear: every major leap in AI intelligence also widens the danger zone.

OpenAI’s Bio Bug Bounty is a creative step, but it’s not a silver bullet. As one researcher put it, “You can’t bounty your way out of a fundamental capability gap. If the model knows how to build a bioweapon, the cat is already halfway out of the bag.”

Whether you’re excited, terrified, or both, one thing is certain: GPT‑5.5 changes the game. And we’re all going to have to learn to play by new rules.