The least restrictive one I've found so far is Kimi Code—I don't even have to jailbreak it, enter a specific command prompt, or set up any special rules.
I installed it on a VPS (I use the API), and I connect to it anonymously.
It does whatever you ask it to—there are no limits. You do have to be a little smart, though, and not ask it, “Can you launch a cyberattack on this target?”
It’s excellent at malware development, red teaming, penetration testing, and more! Of course, this requires good instructions: a well-written AGENTS.md file, strict development rules, correct and precise prompts, etc.
But it does the job very well. I see almost no difference between OPUS 4.7 and 4.8 compared to its latest version, K2.7.
Extremely powerful.
What about you? What do you use?
LIMB