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The best AI agents can turn one person who knows how to set them up into a small business superpower. Or they can eat up hours of your time, cost you credits and deliver nothing useful at the end. I felt like this is where we were so far, but now, the best AI agents are ready to empower small businesses. I tested 10 of the best AI agents so you can skip the trial and error. This is based on real experience, not feature lists.
- Find blogs that mention AI tools like Gamma or ElevenLabs
- Check that the site has a similar authority score (or DR) to mine
- Find the editor's email address
- Write a link exchange email referencing their article and my relevant review page
- Save it as a draft in my inbox ready for me to review and send manually
I also have skin in the game here. I actually want to use one of these AI agents myself, so I'm looking at each one with the same critical eye you should.
I'll be strict and transparent, because I want to tell you which tools will actually work for small businesses and which ones are not worth your money yet.
Credits: More specific prompts cost fewer credits. Instead of asking your agent to search the whole internet, give it a defined list of verticals to work from. My task ran more efficiently once I narrowed the search to specific tool categories rather than leaving it open-ended.
Security: Agents run in a secure cloud environment, not on your local machine.
Integrations: Connecting AI agents to other apps via Zapier or Make.com is possible but can be brittle. These integrations break, and when they do the whole workflow stops.
Multiple Agents: You can also build multi-agent systems where different AI agents talk to each other and hand off tasks. One agent researches, another writes, another sends.
Invocation: Is how you wake an agent up. That can be a Slack message, a scheduled time, an email trigger or a manual run. Each workflow has its own settings and its own custom prompt.
Barriers: HITL Stands for Human in the Loop. It just means you build in a checkpoint where you review before the agent continues. In my test, saving the email as a draft rather than sending automatically was my HITL step.
Models: Most AI agent platforms let you choose which AI model powers the agent. Some use Claude, some use GPT-4, some let you mix models across different steps.
- Filtering out competitor blogs was genuinely difficult for them. I could have defined that part of the task more clearly upfront.
- The DR lookup was a real hurdle since most tools sit behind a paywall, but some handled it better than expected. Hyperagent & Kortix stood out here.
- How you set up your agentic workflow matters as much as which tool you pick.
- A vague prompt will burn through your credits fast.
- Add feedback loops to make sure the agent doesn't go too much astray.
- Work out your workflow logic before you let it run. In my case, getting the URLs first and filtering competitors manually would have saved a lot of wasted steps.

Hyperagent is not quite on the market yet, but I was invited to test while in development.
I wanted to add it to this comparison anyways because it's such a useful tool.
First I created my agent and gave it its own custom instructions in form of my test prompt with the backlink research task. From now on I can use this custom agent in different sessions, schedule or trigger it via slack (invocations).
Within the settings for the agent I can set individual integrations, I connect my Gmail address here.
Once we get started I feel like Hyperagent is what ChatGPT had promised to us about 1 year ago: an autonomous agent that can work within its own browser environment. I can watch how it opens Ahrefs, queries a few of the websites it researched and then hits a captcha hurdle.
Hyperagent then moves on to another backlink checker website.
Only at one point it stops working and I have to prompt it again to continue.
But what it comes up with then is really impressive: by far the best list of websites I can ask about backlinks because they are not my direct competitors. The draft emails are perfectly formulated and all links are correct.
It wasn't able to send out emails directly from my inbox, but none of the tools were honestly, so maybe it's some issue on my side with Google workspace.
I'm already coming up with a million use cases for this tool, I'm really excited and sad at the same time because my next employee will not be human anymore.
As I said, the tool is not on the market anymore, but if you ask me real nicely, I will ask the hyperagent team also real nicely to whitelist you for the tool.
Kortix is not wasting any time and gives me a full analysis of competitors and even screenshots from Semrush about domain ratings.
I also love how it provides me with multiple choice options on how to proceed next, similar to how Claude asks me about details.
And also in the next step, Kortix keeps giving me screenshots as proof of how it's visited the potential pages to determine if they are a good fit. I am truly impressed.
The email research works great, and I only have to correct the tool once about an address it falsely flags as a competitor.
I connect Kortix to my email inbox and feel a little bit naked at this point, but so far Kortix has impressed me so much, I don't really have a choice.
Everything seems fine, but in the end it's not able to draft the emails directly in my inbox, even after I try to connect it to my non-workspace Gmail address.
Still, Kortix really impressed me with how it's built, how it communicates with me and how relevant the output is in general. And I still can't get over all the screenshots it gave me of third-party tools and the blogs it was collecting for me. So cool!
Manus was bought by Meta, but I'll still be kind and neutral reviewing it, I promise!
You can only set Manus up via an integration in Telegram, LINE or Slack. Scanning the QR code with your phone will link both accounts, in my case Telegram with Manus. I personally find this distracting, because I typically separate phone time from work time. After a while I realized that I can work on desktop too, if I download the app.
Manus is right away frank about its limitations and that it won't be able to write emails for me. And Domain Ratings will be based on its estimations.
It also tells me that this ask is a fairly intense research task and that I should expect 15-20 minutes, but will update me.
Manus also determines my Domain Rating 20 points off on Ahrefs, which establishes a wonky base already because it will match pages with lower domain rating to mine now.
Blog link quality is very low, it basically output ONLY competitors.
Drafted emails are good, but again the files are on my phone and I have to first send them to my desktop to copy and paste the requests to my emails.
I also ask Manus if it can make changes to the sheets it provides to me, but it can't and will output a new file for me every time. Kind of like in the middle ages, when we had so many files we completely lost the overview.
So overall I would love to work with Manus because it would be a great free alternative (you do pay with giving your data to Meta though) but this AI agent is just not useful enough yet.
After signing up, Lindy right away threatens to label my emails, draft replies for me, and take notes in my meetings. No warm up phase, no hi how are you? I didn't even allow Claude yet to take over these things, despite our mutual love for each other.
I connected it to my former virtual assistant's inbox where we used to do backlink outreach. I can also just ask Lindy to look through my messages and get me specific information. So I tested this and asked how many backlink requests we've received in the last 2 months, and Lindy determined it was only 8 to this email address, which is possible.
Next I copied the full 5-step task into the Lindy chat window. It thought for a while and I wondered if I was in the right place. Lindy keeps showing these escalated windows with scripts and I'm unsure why I have to even see them when I only have read access and can't change them.
As expected, Lindy has issues with figuring out the DR (domain ratings) of the pages and determines mine way too low instead of just asking me.
Next it researches potential partner pages and also sorts out lots of competitor pages, but in the end 2 out of 3 email suggestions are direct competitors still. I scold it and it continues to research non-competitors and drafts relevant emails.
In the same flow it also deletes an event it never created, which Lindy catches itself, but still, this is stealing my attention for an unnecessary moment.
Also I wish Lindy would just share the email draft text with me before creating the emails in my inbox right away. This just wastes credits and I'm unhappy with the formulation for 2 more times because it just doesn't understand me well (Claude understood my instructions right away, so I'm not the problem here).
Overall I don't think Lindy is helpful enough yet to really outsource big chunks of work to it. It still needs too much manual review and often wastes credits for no good reason.
Ok, sheepishly I have to admit: At first I'm a little bit in love with Relevance AI. It just looks so cool.
The interface is so clean and easy to get around right away, and the free credits are really generous.
My Outreach agent gets right to work and correctly identifies the competitors. It only outputs one address at first, but that one is on point. Even though I connect it to my Ahrefs account, it later is unable to fetch the correct data for me.
I get so excited that I right away connect it to my Gmail address, sadly I can't find the draft email it created there for me. Relevance AI doesn't really explain it, but I still trust it enough to consider connecting it to my Airtable for a moment. Mmmh, maybe we need a longer runway.
It wants me to manually copy and paste my outreach emails, which of course is a pity, but bearable if the output generally is good.
Next I throw in another challenge: Create a sheet for me where you document all the addresses and status. It thinks about it for a very long time, even though I give it the playground with a link to an existing sheet.
After 5 minutes of thinking (Relevance), I have to admit that not all that glitters is gold.
I've tested Genspark on the workflow function because Claw required me to sign up to a plan.
The AI Agent takes a bit longer than other agents, but the output is solid. Genspark creates a workflow for me with details that absolutely make sense:
The thought process regarding DRs is solid. The email draft is good. I'm able to set a trigger. It flags that Gmail is not connected yet.
I can't determine where Genspark will check the DR, though, because I ran out of credits to actually run the tool. So to be fair I'll rank it in the middle somewhere.
It's a bit harder to determine the quality of Enso's output because it hits the credit limit at step 2 of 10. It ran out of credits so fast because it had collected 100 addresses and quite some data on all of them.
The output is more or less relevant because the pages aren't AI review pages but mostly (and ironically) AI agent companies. Which is fair, as long as they wrote about the topics I had provided.
The DRs are correct, which impresses me because hardly any other tool was able to research them properly.
I had just connected my email address when I ran out of the 2000 free credits - the tool simply used too many by running 17 tools. What a waste! This is also concerning because the next tier only gives you 3000 credits for $49, which means Enso might waste a lot of your paid credits too.
Because it was able to pull the DR data I gave enso a good for performance but a bad rating for value for money. The rest is neutral because I couldn't evaluate them.
It might not really be fair to measure i10x against the other tools in this category, because it's not a full-grown agent. It can't connect to other tools or external services like inboxes, but it's eager to help anyway.
I was a bit annoyed with how generous i10x was throwing my credits around. I didn't feel like it should repeat every instruction over and over again - just get to work!
So for this multistep setup with Gmail integration, this is definitely not the tool for you.
Cassidy AI is really weird: it tells me it can't browse the web to research the blogs, but at the same time it was able to pull the data of my pages I want the backlinks for. Make it make sense.
It literally wants me (or a VA haha) to make a google search and copy screenshots so it can take a look. It provides me with the keywords for this search, which are the same keywords I had given in my prompt.
I don't know what I would need Cassidy for then?
Not ready to waste any more time with this tool and you shouldn't either at this point.



In our AI Agents Comparison, we found Kortix to be particularly impressive. It provides a full analysis of competitors, even showing screenshots from tools like Semrush about domain ratings. We loved how it offered multiple-choice options on how to proceed next and shared proof of its research with screenshots of potential pages. Its email research worked great, and the drafted emails were spot on.
When looking for a free AI Agent, Manus offers a 14-day free trial and provides a daily refresh of 300 credits. While it has some limitations, such as outputting a new file every time changes are made and sometimes providing only competitor blogs, we found its drafted emails to be good, and it can be triggered conveniently via Telegram, Line, or Slack, making it a strong contender in our AI Agents Comparison.
For autonomous task execution, both Manus and Kortix highlight this as a core capability in our AI Agents Comparison. Manus is designed for autonomous task execution with multi-modal capabilities, while Kortix also features autonomous task execution and impressed us with its ability to perform comprehensive analyses and research independently.
Yes, some AI Agents can generate images and videos. For instance, i10x includes image and video generation as a key feature. Similarly, Hyperagent also has image and video generators directly within the tool, which we found to be a useful capability in our AI Agents Comparison.
Yes, some AI Agents are designed for extensive integration. Relevance AI, for example, boasts over 2000 app integrations, making it an LLM agnostic platform with a multi-agent system builder. In our AI Agents Comparison, we found this promising for connecting with various tools, though we noted some integrations didn't work as expected initially.
For document analysis, i10x offers a key feature of document analysis with ChatPDF. This allows it to process and understand information within documents, making it a useful tool for tasks requiring content extraction or summarization in our AI Agents Comparison.
For generating workflows, Genspark showed solid capabilities in our AI Agents Comparison. We tested its workflow function and found that it created a workflow with details that absolutely made sense, including a good email draft and the ability to set a trigger. Lindy also offers workflow automation as a key feature.
For email management, Lindy stands out in our AI Agents Comparison. It offers AI Inbox Management, and we found its integrations to Gmail and Calendar very easy to set up. It can look through your messages to get specific information, though we did note it can be a bit too eager with its access requests right after signup.
In our AI Agents Comparison, Hyperagent impressed us with its transparency regarding credit usage. It features a little window that clearly indicates the exact credit use per task, which is very helpful for managing resources effectively.
In our AI Agents Comparison, we observed that several tools struggled with accurate Domain Rating (DR) assessment. Manus based its DRs on estimations which were sometimes off, and Lindy determined our DR way too low. Relevance AI correctly flagged that it couldn't access DR data, relying on estimates. However, Kortix was an exception, providing accurate DRs and even screenshots from external tools like Semrush as proof.
