One Prompt Library Across ChatGPT, Claude, Gemini & Grok (2026)
AI Toolbox (formerly ChatGPT Toolbox) gives you a single prompt library that follows you across ChatGPT, Claude, Gemini, and Grok, so a prompt or chain you save on any one assistant is instantly available on all four. No more rebuilding the same prompts on every site, and no more wondering which assistant has your latest version. You save it once, then drop it into any assistant by typing the // shortcut. It runs on Chromium browsers (Chrome, Edge, Brave, Opera, Arc) as one unified install. Trusted by 40,000+ active users with a 4.6/5 Chrome Web Store rating.
TL;DR. Save a prompt or prompt chain on any assistant and it appears on all four instantly, because AI Toolbox keeps one shared library instead of four separate ones. The first time you use it, your existing prompts on each site are merged in automatically, and from then on the library stops being tied to whichever account you happen to be signed in with on each site. It unlocks with the All Access cross-platform bundle. 40,000+ users, 4.6/5 Chrome Web Store rating, 14-day money-back guarantee.
By Adi Leviim, Co-Founder at Infi Developments, 7+ years building AI productivity tools.
Why prompts get stranded on one assistant
If you use more than one AI assistant, your best prompts scatter. You write a strong system prompt in ChatGPT, a research template in Claude, a rewrite prompt in Gemini, and each one is stuck where you made it. Native prompt storage, where it exists at all, is per assistant and does not carry to the others. So you end up copying prompts between tabs, keeping a separate notes file, or rebuilding the same template three times.
AI Toolbox replaces the four separate libraries with one. A prompt or chain you save on any assistant is written to a single shared list, so it exists on ChatGPT, Claude, Gemini, and Grok at the same time. Edit it in one place and the change is the same everywhere.
How the shared library works
One list, four assistants, kept in sync automatically. When the cross-platform library is active:
A prompt or chain created on any assistant is added to one shared list, so it is immediately available on all four.
The first time you use the shared library on a site, the prompts you already saved there are merged in automatically. Duplicates are deduplicated, nothing is lost, and the step is safe to repeat.
Your library stops being tied to the account email each site happens to be signed in with, so a mismatch between your ChatGPT login and your Gemini login no longer splits your prompts.
Turn the cross-platform switch off and each assistant keeps its own copy, so you are never locked in and nothing is deleted.
Insert any saved prompt the same way on every assistant: start typing // in the message box and pick the prompt. Prompts support {{variables}}, so one template adapts to many inputs.
Native prompt storage vs AI Toolbox shared library
Capability
Native (each assistant)
AI Toolbox shared library
Scope
One assistant only, where it exists
One library across all four assistants
Save once, use everywhere
No, rebuild per site
Yes, instantly on all four
Import existing prompts
Manual copy
Merged in automatically on first use
Prompt chains
Not available
Shared alongside prompts
Insert shortcut
Varies or none
Type // on every assistant
This is an All Access feature
The shared prompt library is part of the cross-platform bundle, so it unlocks with All Access. All Access is a single purchase that turns on the ChatGPT, Claude, Gemini, and Grok modules of AI Toolbox, plus the cross-platform layer that ties them together: the shared prompt library and unified search across all four assistants.
To be clear about what you are buying: All Access unlocks the AI Toolbox modules, not the AI subscriptions. It is not an AI subscription. You keep using your own ChatGPT, Claude, Gemini, and Grok accounts, and AI Toolbox adds the prompt, search, and organization layer on top of them. All Access Lifetime ($199) covers all four modules in one purchase and saves $197 versus buying four single-platform Lifetimes. Every paid plan includes a 14-day money-back guarantee.
Who benefits most
Multi-assistant power users. One canonical set of prompts, available wherever you work, instead of four drifting copies.
Teams with a house style. Standard prompts stay identical across every assistant a teammate opens.
Prompt engineers. Iterate a template once and use the current version everywhere, chains included.
Frequently Asked Questions
Does a prompt I save on ChatGPT show up on Claude, Gemini, and Grok?
Yes. When the cross-platform library is active, a prompt or chain saved on any assistant is added to one shared list and becomes available on all four at once.
What happens to the prompts I already saved on each site?
They are merged into the shared library automatically the first time you use it on that site. Duplicates are deduplicated and nothing is deleted, so you keep everything you had.
Do prompt chains sync too?
Yes. Both prompts and multi-step prompt chains live in the same shared library and are available on every assistant.
What does it cost?
The shared prompt library is part of the cross-platform bundle and unlocks with All Access ($199 Lifetime), which also turns on all four assistant modules and unified search. It is not an AI subscription: you use your own assistant accounts.
Which browsers are supported?
All Chromium browsers: Chrome, Edge, Brave, Opera, and Arc. Firefox is not supported.
Conclusion: write it once, use it everywhere
Your prompts are some of your most valuable work, and they should not be trapped on whichever assistant you happened to be using when you wrote them. With AI Toolbox, one shared library follows you across ChatGPT, Claude, Gemini, and Grok, so every good prompt is one // away no matter where you are working.
Key Terms
Shared prompt library
One AI Toolbox library of prompts and chains that is the same across ChatGPT, Claude, Gemini, and Grok, so saving on one assistant makes it available on all four.
All Access
A single purchase that unlocks the ChatGPT, Claude, Gemini, and Grok modules of AI Toolbox plus the cross-platform layer (shared prompt library and unified search). It unlocks the extension modules, not the AI subscriptions.
// shortcut
Type two forward slashes in any assistant's message box to open your prompt library and insert a saved prompt.
References
Sources and authoritative documentation referenced in this article:
A Full Stack Developer with 7+ years of experience building AI productivity tools. Leads product development and frontend architecture for AI Toolbox, the Chrome extension suite (ChatGPT, Gemini, Grok, and Claude modules) that helps users search, organize, and export their AI conversations.
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Adi Leviim