What is NjectAI?
NjectAI (formerly Prompt Copilot) is a Chrome extension and web app for people who keep retyping the same background into AI chatbots. You save context once as a profile: your business, your audience, your products, your writing voice or a project's goals. When you write a prompt in ChatGPT, Claude, Gemini, Grok, Perplexity or Google AI Mode, you pick a profile and NjectAI adds it to the prompt.
It can also rewrite a rough request into a structured prompt, autocomplete as you type, and keep memory notes that the company says are stored by its partner Midbrain. On phones it works through an official app inside ChatGPT rather than the extension, which is desktop Chrome only.
The maker is PROMPT COPILOT FZCO, a free-zone company in Dubai. The Chrome Web Store listing showed 479 users and a 4.9 rating from 19 ratings, at version 1.5.5, when we checked.
Is NjectAI worth it?
If you use more than one AI chatbot, you know the ritual: paste in who you are, what the business sells and how you like things written, then ask the actual question. Do it ten times a day and it adds up, and each assistant remembers a different, partial version of you.
NjectAI keeps that background in one place. You build profiles, say one for your consultancy's voice and one for a side project, and pick one when you write a prompt in ChatGPT, Claude, Gemini, Grok, Perplexity or Google AI Mode. The same profile follows you across all six, which a single chatbot's built-in memory cannot do.
What the extension can see matters more than usual here, because it sits inside your conversations. According to its privacy policy it runs only on supported AI sites or when you switch it on, and it does not record browsing history, read your full chats or collect passwords and form data. It does read and write the prompt box, and prompts you send for enhancement go to its servers and to AI model providers it does not name; unsaved prompts are kept for up to 30 days. The store listing does not show the extension's permissions, which Chrome displays only at install, so we could not check them.
The catch: the tracking defaults are looser than the privacy promises suggest. Outside Europe, the Meta Pixel runs from your first visit until you turn it off, and the company decides whether you are in Europe from your device's time zone. The policy says it never sells data and does not train models on your prompts, but it admits that sharing ad data with Meta may count as sharing under California law.
Scale is the other question. 479 users is about the size of one secondary school, the 4.9 rating rests on 19 votes, and ChatGPT's custom instructions and Claude's projects already carry a profile for free inside each app.
Our take: for someone who genuinely switches between three or four chatbots every day, $9 a month for one portable profile is fair value; for anyone loyal to one assistant, its own settings page does the same job.
Where it earns its place
A freelance marketing consultant with four retainer clients
Write social posts in each client's voice without re-explaining the brand every time
One profile per client holding audience, products and tone; pick the profile before prompting in whichever chatbot is open. $9 a month covers all four, against minutes of pasting saved per prompt.
A solo founder who uses Claude for writing and Perplexity for research
Keep both tools aware of the company's product and goals
A single company profile injects into both sites from the Chrome extension, so neither starts from scratch. Keep customer data out of profiles, since prompts pass through NjectAI's servers.
Before you commit
- Setup
- Install the extension from the Chrome Web Store, sign in with Google, and fill in a first profile; the 7-day trial starts before the $9 plan.
- Integrations
- ChatGPT, Claude, Gemini, Grok, Perplexity and Google AI Mode in desktop Chrome; an official app inside ChatGPT for web and mobile; prompts from God of Prompt's library.
- Data and privacy
- PROMPT COPILOT FZCO, Dubai. The policy says no selling of data and no training on prompts, profiles, memory or outputs; unsaved prompts kept up to 30 days, logs 90 days, deleted accounts erased within 30 days. Hosting on Railway, memory with Midbrain Inc. in the US, and Meta Pixel on by default outside Europe. Which AI tools train on your data?
- Cost at scale
- $9 per person per month, or 22% less yearly; no team plan is published.
- Limits
- Desktop Chrome only; works only on the supported AI sites; no EU representative or Data Protection Officer appointed yet, according to the policy.
What’s good
- One profile works across ChatGPT, Claude, Gemini, Grok, Perplexity and AI Mode
- Several profiles for different clients, projects or writing styles
- Policy says no training on your prompts, profiles or outputs
- Official ChatGPT app carries profiles to the phone
- 7-day free trial before the $9 plan
What’s not
- Meta Pixel on by default outside Europe, judged by time zone
- Prompts go to AI providers the company does not name
- Extension permissions not shown on the store listing
- 479 users and 19 ratings: very early
- Desktop Chrome only; no Firefox or Safari
Best for
Consultants, marketers and founders who switch between several AI chatbots every day and want the same background and voice in all of them.
NjectAI alternatives
NjectAI: common questions
- Is NjectAI worth it?
- NjectAI saves you retyping your background into every chatbot, but for $9 a month you are handing a small Dubai start-up your prompts, and the chatbots' own memory features now do much of this free. We rate it 3.3 out of 5.
- How much does NjectAI cost?
- One plan, Nject Pro, at $9/month or 22% off billed yearly, with a 7-day free trial.
- What are the downsides of NjectAI?
- Meta Pixel on by default outside Europe, judged by time zone; prompts go to AI providers the company does not name; extension permissions not shown on the store listing; 479 users and 19 ratings: very early; desktop Chrome only; no Firefox or Safari.
- Who is NjectAI best for?
- Consultants, marketers and founders who switch between several AI chatbots every day and want the same background and voice in all of them.
- How much does NjectAI cost for a team or in production?
- $9 per person per month, or 22% less yearly; no team plan is published.
- Is NjectAI safe for company data?
- PROMPT COPILOT FZCO, Dubai. The policy says no selling of data and no training on prompts, profiles, memory or outputs; unsaved prompts kept up to 30 days, logs 90 days, deleted accounts erased within 30 days. Hosting on Railway, memory with Midbrain Inc. in the US, and Meta Pixel on by default outside Europe.
- What are the best NjectAI alternatives?
- The closest alternatives we have reviewed are MemoryBase, ChatGPT and Claude.
Answers checked Nov 14, 2026.