If you want a button that does this for you, stay tuned.
Personal AI harnesses should not be limited to people willing to duct tape together model routing, custom prompts, subagents, context engineering, and provider fallbacks.
That should just be the product.
Z.
if you want Fable level performance NOW, the answer is to build your own coding harness
here's how I'm doing it
(in a lightweight Pi-native way rather than a heavy Superpowers/Compound clone)
first, I think we're going to see PERSONAL HARNESSES that derisk single model reliance, help users save money, and squeeze top frontier performance out of homegrown systems
The best engineers I know already do this...
1) Use Pi, the open source coding harness that you can make your own and access any model from
2) Set 5.5 codex as your default model
3) Deeply analyze publicly available system prompts (guess which model I looked at?)
4) Feed Codex context on Loop Engineering and other engineering skill repos
5) As it to improve efficiency as a lot of engineering repos are super heavy and bloated/slow
6) Ask it to use FUSION via Openrouter for planning, logic, and review tasks
7) Ask it to use Kimi k2.7 code for subagents/execution
8) Have it dog food the harness until it's dialed in then unleash it on a repo for a deep analysis
Lessons from the Fable fiasco:
Don’t limit yourself to state-authorized outputs.
Don’t lock your business into one model provider.
Don’t turn over your personal information to institutions you don't trust.
→ Anonymous access to frontier models
→ Fully private inference on open-source models
→ One account across every model
Everything you can do with AI. Now private.
The best model changes by task.
Sometimes it's GPT. Sometimes Claude. Sometimes Gemini. Sometimes Llama, Qwen, DeepSeek, or Mistral.
Z gives you one place to use them all, with privacy protections built around each model path.
Everything you can do with AI. Now private.
Doctors, lawyers, therapists, journalists, founders, investors.
The more sensitive the work, the more privacy matters.
Everything you can do with AI. Now private.
Use ChatGPT, Claude, Gemini, Grok, and more without tying every prompt to your identity.
For fully private inference, run open-source models through Z.
Everything you can do with AI. Now private.
Power-user mode for open-source AI.
Run your prompt across Llama, Qwen, DeepSeek, and Mistral in parallel. Get the strongest synthesized answer.
Private inference. Private agents.
Job hunting? Negotiating salary? Drafting a sensitive email?
Don't paste it into something that logs it. Use AI privately.
Everything you can do with AI. Now private.
Ask the questions you can't ask ChatGPT.
Medical. Legal. Political. Economic. Career.
In TEEs: Nothing gets logged. Nothing gets sold. Nothing gets trained on.
Everything you can do with AI. Now private.
Doctors, lawyers, therapists, and journalists all have professional obligations to keep client information private. Most AI tools make that hard.
Private inference makes it the default.
Everything you can do with AI. Now private.
Z can't read your prompts. Z can't sell your data. Z can't comply with a subpoena for your conversations.
Privacy enforced by hardware, not policy.
Private inference. Private agents.
The fully private AI operating system:
→ Anonymous access to GPT, Claude, Gemini
→ Fully private, hardware-attested inference on Llama, Qwen, DeepSeek, Mistral
→ Zero logging across every request
→ One gateway, one account, every model
Private inference. Private agents.
Six AI subscriptions that leak your data?
Or one subscription that protects all of it?
Access the best models while securing your information.
Everything you can do with AI. Now private.
Keep using ChatGPT.
Just keep your identity to yourself. And add every other frontier model in the same interface, anonymously.
Everything you can do with AI. Now private.
Join us live tomorrow with Justin Roberti from @Benzinga and Z co-founder @KieranPDennis.
We'll be breaking down why agents need private inference.
⏰ 11am ET.
Switch between models mid-conversation. Remain fully anonymous the entire time.
Access the best model for each use case while protecting your information.
Everything you can do with AI. Now private.