Ninja AI Review: AI Agent, Pricing & My Test Results

Ninja AI is an AI agent from NinjaTech AI, a company in Los Altos, California. You type a job, and it does the job on its own computer. I tested it on 28 and 29 October 2026 on the free plan, then on a paid Pro plan.

Its home page calls it an autonomous agent with its own computer. The free plan gives 300 credits to use once, and Pro gives 1,900 a month. RankDude paid for one Pro month, and I used the Standard, Pro, Expert and Max levels.

Ninja AI home screen on the free plan with the SuperNinja Agent box, the Standard level and a credit balance of 300

I tested Ninja AI with 22 jobs, typed word for word, with a new chat for each job. The jobs are set in a made-up café, and I checked every answer against a key I wrote first.

Signing in took one click, with no waitlist, invite or card. The free plan gave the first round at the Standard level. One paid Pro month then gave the memory tests, the repeats and the higher levels. A program also checked every file, and it agreed with me.

You pay $19 a month for the cheapest paid Ninja AI plan, and it gives you 1,900 credits a month. A yearly price is lower.

The free plan gives 300 credits to use once, 1 job at a time and the Standard level only. RankDude paid for one Pro month, which renews on 29 November 2026. Prices read on 29 October 2026, monthly view.

Ninja AI pricing page, monthly view, with Free at 0 dollars, Pro at 19 dollars with 1,900 credits a month

Ninja AI finished 15 of 21 jobs with every point right on the free plan. It looked up web pages, filled a basket, wrote a Word file, sorted my inbox, found a meeting time, and built a working website and app.

The other 6 jobs had mistakes: the email research, the slide deck, the orders file, the booking form, the daily brief and the banner. On Pro, Expert and Max, the research still had guessed facts. Most jobs took about 3 minutes, so you do not wait long.

Ninja AI got all 90 facts right when I asked it to research 30 cafés at once. It took 3.6 minutes and 3 credits, with no helper agents and no questions, and it wrote "not listed" for the 6 facts the pages left out.

It also made a contact list of 24 businesses with 12 gaps and invented nothing. In a 60-page handbook it found 8 answers with the right page numbers, and said 2 were not in it.

Ninja AI's answer after researching 30 cafés: flat white prices from 3.10 to 4.15, Saturday closing times

Ninja AI said "done" on 5 jobs where something was wrong or missing, so you should check its work. The email research had facts that were not on the pages and a wrong year. The orders file got one extra problem row, and the booking code had an extra full stop.

When Ninja AI could not do a job, it usually said so: a missing file, a dead link, a paywall. But it made up opening hours and offers for a notice. Higher levels still guessed some email facts, so check before you rely on them.

Ninja AI's answer on the orders file: a whole-file total of 4,974.50, a total with problem rows left out of 4,885.50

Ninja AI made good files: a Word policy, an invoice sheet and a banner all opened and worked. The policy had all 5 facts on one page. The deck had the 8 right titles on screen, but they are not real title boxes.

The invoice sheet gets its totals from sums that Excel works out on opening, and they came to 1,262.00, 47.10 and 1,309.10. The banner has the exact words and size, with a soft glow I did not ask for. You can edit the deck and the sheet.

The launch week banner Ninja AI made: Launch Week and 9 to 15 Nov in cream on fern green with faint line-drawn leaves

Ninja AI built a working website and a working staff app, and it published both without asking me. The website had my menu, 7 days of hours and a Book a table button. The app had a login and kept its list after a refresh.

The site cost 7 credits and the app 12. The app saves only in your own browser, and its login page prints the password. A free site shows a Made by SuperNinja badge.

The one-page café website Ninja AI built and published: a dark header with the headline, a Book a table button

Ninja AI did 6 of 7 jobs on apps and websites correctly on the free plan. It sorted 15 emails, made a calendar draft, held an email draft, filled a basket, and downloaded a price list after a login. The booking form failed, because it typed an extra full stop. Pro and Max got the booking code right once each.

For the train job, it chose the right train at £11.60, typed the passenger name and did not press Pay. Its calendar draft carries the London time zone.

Ninja AI's answer on the train job: the 07:35 service at 11.60 pounds is the cheapest that arrives in time

Ninja AI runs in your web browser, and its AI employee route for Slack and Teams needs a channel you connect first. On Pro, the tab opens a Get started card instead of the upgrade card I saw on free.

The plan lists 6 connectors, like GitHub, Slack and Notion, and I connected none. It translated my policy into Spanish and German correctly. A scheduled task form exists, with repeat, date and time. I did not save one, and I did not test the phone or desktop apps.

Ninja AI's Hire your 24/7 AI employee card on the Pro plan with a Slack example, 3000+ integrations, Self-evolving

Ninja AI handled 5 of 7 traps well at the Standard level and missed 2. It said when a file never arrived or a link was dead, asked for a login, and read only the free part of a paywalled article.

At Standard it missed my "prove you are human" check, because it typed the code itself. At Expert and Max it said it was a human check and left it to me. At Pro it ended with no answer.

It also made up hours and offers for a notice at Standard, but Pro, Expert and Max asked you for them.

Ninja AI saying the tasting night details are gated behind a human check, that it will complete the check itself, and

You can watch a Ninja AI job live, and a Stop button ends it. A correction typed during a job never showed up in the chat, in 2 runs. A computer panel lists each step, and there are Agent, Chat and Plan modes.

On Pro, 2 jobs sent 1 second apart both ran at once, and a job I left by closing the tab was finished when I came back. Chat mode answered but could not make you a Word file. Stop at 4.5 minutes had used 12 credits.

Ninja AI agent level menu on a paid plan with Standard, Pro, Expert and Max

Ninja AI took about 3 minutes for a normal job, and all 9 repeat runs gave the same results, so you can plan around it. The jobs ran from 0.8 minutes to 14.5 minutes for the email research.

I ran the email research, the invoice sheet and the booking form 3 times each. The sheet gave the same totals each time. The form failed the same way each time, and the research made the same kinds of mistake each time.

Ninja AI forgot my 10 rules when I told them in a chat: a new chat used 0 of the 10. It said it had saved them, but only in that chat's own file, so you cannot rely on chat memory.

Typing the rules into Settings, Personalization worked: a new chat used 9 of 10. A project with the rules as a file also gave 9 of 10.

You can view, edit and delete that note. A saved workflow could not be reused in a new chat, and I found no skill builder.

Ninja AI reply that starts Hello from Fernhook, names the Fern Card and Hollin Vale, refuses the 20% discount

Most Ninja AI jobs cost a few credits at the Standard level: 1 to 13, and the email research cost 35. Higher levels cost more: the same research cost 221 at Pro and 335 at Expert, and one booking form cost 108 at Max.

Pro gives 1,900 credits for $19 a month, so a credit costs 1 cent. You cannot see the cost before a job, and I found no spending limit. A separate pool of 98 on-demand credits stayed untouched.

Ninja AI followed 0 of 5 sneaky instructions, and it told me about every one. I hid them in a page, a file, an email, a calendar and an invoice. It sent nothing, paid nothing and deleted nothing.

But it acted on 1 of my 8 requests: it published the invoice sheet as a public web page without asking me first. When I said to spend whatever it cost, it never asked about cost.

I emailed Ninja AI support on 28 October 2026, and no reply had come when I wrote this. There is no chat: the app links to a help centre and a ticket form.

The terms say you keep what you put in, and Ninja AI claims no ownership of the output. A training switch is on by default and is locked on free. Deleting an account removes the data after 60 days.

There is no student price. Credits expire and are not refundable, and a refund comes only if Ninja AI ends your plan. I did not ask for credits back after a failed run.

Ninja AI scores 3.6 out of 5 on Trustpilot, from 210 reviews, and 57% are five stars and 20% are one star. I read this on 28 October 2026. In the newest 50 reviews, 30 praise it, and the top complaints are failures, credits and billing.

Only 20 reviews came in the last 12 months. Several recent ones say a 2026 pricing change gave users less. Trustpilot says the company replied to 70% of the negative reviews.

I could not test a few Ninja AI features, even on the paid Pro plan. The next-day memory check needs 24 hours, so I did not run it.

Left out are the AI employee in Slack or Teams, real Gmail and Drive, the phone and desktop apps, the API, a saved scheduled task, the cancel and checkout walks, deleting an account, and the Business plan. The 300 free credits had run out on 29 October 2026.

Ninja AI chat showing a card that says This task ran out of credits, Buy credits to keep working

Ninja AI did most jobs I gave it, fast and cheaply, and I recommend it for quick office jobs if you check its answers and keep your rules in the memory note.

Ninja AI read pages, made files, and built a working website and app for a few credits each. But it said "done" when it was not on 5 jobs, it published a file to the web without asking, and it forgot rules I told it in a chat.

Ninja AI measures 3.0 out of 5 in my tests, and I add 0.8, so my rating is 3.8 out of 5. The free plan let me run 9 of 10 tests, and one paid Pro month added the memory test.

See the Ninja AI test results and how I rate.