Promptmonitor vs Sellm (2026): which should you pick?
As of Oct 23, 2026, Promptmonitor grades higher than Sellm: 2.2 against 2.0 out of 4.0.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Promptmonitor grades higher on the free plan and features. Sellm grades higher on platforms. They get the same grade on value for money and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Promptmonitor
AI search tracking in 8 models, with citations and publisher contacts
Sellm
Weekly AI search tracking that runs each prompt ten times per engine
Which one is for you
Pick Promptmonitor if
- Fits if you plan to pitch the sites AI answers cite, using the publisher contacts it pulls
- Works for teams that need prompts run from a particular city, from 200-plus locations
Look elsewhere if
- Skip it if you need daily checks on Starter, which runs twice a week on 3 engines with 1 seat
- Tight if you want all 8 engines, which only come with Pro at $149 a month
- Not for you if you need an API, SSO or integrations, as the API and SSO need Enterprise and none are listed
- Watch out: every plan caps AI answers a month, and one prompt in one model counts as one
- Watch out: Pro's yearly toggle shows $83 a month, which doesn't match the stated 15% saving
Pick Sellm if
- Fits if single AI answers feel too random and you want each prompt run ten times
- Works for teams that want an API and an MCP server on the entry plan
Look elsewhere if
- Skip it if you need daily numbers, as checks are weekly unless you're on the custom Agency plan
- Tight if you track many engines and regions, since each one uses up prompts
- Not for you if three days is too short to judge a tool, as that's the whole trial
- Too light for agencies: white-label reports and multi-brand monitoring need the custom Agency plan
- Pricey if 200 prompts runs out, as the next step is Pro at $249 a month
How we grade them
| 2.2GPAPromptmonitorFair | 2.0GPASellmFair | |
|---|---|---|
| Value for money | CStarter is $33 a month billed yearly ($39 monthly) for 25 prompts, just above this category's cheaper quarter ($29 or less). It's thin, with 3 engines checked twice a week, and Growth, with 5 engines daily, is $67, above the $49 middle. | CEssential is $89 a month for 200 prompts checked weekly, with every engine and region. That's above this category's middle of $49 but below the dearer quarter of $95, and each engine and region counts against the 200. |
| Free plan and trial | CNo free plan, but every paid plan has a 7-day free trial with no card needed. | DNo free plan, and the free trial of Essential lasts only 3 days. |
| Features | BEight engines, mentions and sentiment, share of voice, cited sources with publisher contacts, AI crawler logs and prompts run from 200-plus locations down to city level. It covers the whole job; the limits are which plan gets which engines. | CSix engines, ten runs per prompt, list position, sentiment, share of voice, cited URLs, page audits and opportunity finding. The gap is in its own listing: prompts are re-checked weekly, and only the custom Agency plan sets its own schedule. |
| Ease of use | CNo rating on record. You add prompts, pick locations and put a snippet on your site for the crawler logs, so there's some setting up. | CNo rating on record. Prompts count once per engine and region, so working out how far the allowance goes takes a few sums. |
| Platforms and integrations | CWeb only, and the listing names no integrations. The API and SSO come only with the custom Enterprise plan. | BWeb only, with an API and an MCP server from the Essential plan, so the data can go straight into your own tools. |
| Best for | AI tracking with publisher contacts for outreach | steadier numbers from repeated prompt runs |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Promptmonitor and Sellm. How we grade
Price against what you get
Promptmonitor starts at $33 a month and scores 2.3 out of 4 on features, ease of use and platforms. Sellm starts at $89 a month and scores 2.3.
They score the same, and Promptmonitor starts $56 a month lower. Of the other AI search visibility tools on the chart, 7 score higher than Promptmonitor for less, and 18 score higher than Sellm for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Promptmonitor also covers content optimization, link outreach and log file analysis.
- Sellm also covers reports.
At a glance
| Promptmonitor | Sellm | |
|---|---|---|
| Pricing | Free trial | Free trial |
| Starts at | $33 per month for 25 prompts, billed yearly ($39 billed monthly) | $89 per month for 200 prompts checked weekly |
| Free plan | None | None |
| Free trial | 7-day free trial on any paid plan, no credit card required | 3-day free trial of the Essential plan |
| Web | ||
| Made by | Stackdirectory LLC | Sellm |
| Price read from | promptmonitor.io | sellm.io |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Promptmonitor
- Starter tracks only ChatGPT, Gemini and Perplexity and checks prompts twice a week, not daily.
- Claude, DeepSeek and the other models need Growth or Pro; all 8 models come with Pro.
- API access and SSO come only with the custom Enterprise plan.
- Each plan caps the AI answers it runs a month; one prompt run in one model counts as one answer.
Sellm
- Prompts are re-checked weekly, not daily; only the custom Agency plan can choose its own schedule.
- Usage counts each prompt once per engine and region, so tracking many engines or countries uses the allowance faster.
- The free trial is 3 days and covers the Essential plan only.
- White-label reports and multi-brand monitoring need the custom Agency plan.
Key features
Promptmonitor
- Eight AI models
- Tracks ChatGPT, Claude, Gemini, Perplexity, DeepSeek, Grok, Google AI Overviews and AI Mode; Starter covers 3, Growth 5 and Pro all 8.
- Mentions, sentiment and share of voice
- Logs every answer with your brand's mentions and sentiment, and works out share of voice against competitors per model and prompt.
- Citation tracking and publisher contacts
- Lists every source an answer cites and pulls contact details for the publishers, with a suggestion to reach out or outrank.
- AI crawler analytics
- A snippet on your site logs visits from GPTBot, ClaudeBot, PerplexityBot and other AI crawlers, page by page.
- City-level locations
- Prompts can be run from more than 200 locations, down to city level.
- Prompt research
- Shows the queries AI tools use when they search the web for answers that lead to your site.
Sellm
- Six AI engines
- Tracks ChatGPT, Google AI Overviews, Perplexity, Gemini, Grok and Microsoft Copilot, with every engine and region on each plan.
- Ten runs per prompt
- Runs each prompt ten times per engine every week and reports the share of runs that name the brand, rather than a single answer.
- Position, sentiment and share of voice
- Shows where the brand ranks among recommended options, the tone of mentions and how competitors compare.
- Citation tracking
- Lists the URLs and channels each engine cites for a prompt, so you can see where to get your brand placed.
- Opportunity discovery and audits
- Highlights prompts with high volume and low competition, and audits pages for the signals Sellm links to being cited.
- API and MCP
- An API and MCP server give access to projects, prompts and analyses from your own tools, from the Essential plan.
Plans
Promptmonitor
Starter$33
per month for 25 prompts, billed yearly ($39 billed monthly)
1 website, prompts checked twice a week, 1 seat, 2,250 AI answers a month, ChatGPT, Gemini and Perplexity only.
Growth$67
per month for 50 prompts, billed yearly ($79 billed monthly)
2 websites, prompts checked daily across 5 models, unlimited seats, 4,500 AI answers a month.
Pro$149
per month for 150 prompts, billed monthly
5 websites, all 8 models daily, 14,000 AI answers a month. The yearly toggle shows $83 a month, which does not match the stated 15% saving.
EnterpriseCustom
More than 20 websites, custom prompt volume, SSO, API access and a dedicated manager.
Sellm
Essential$89
per month for 200 prompts checked weekly
2,000+ AI queries a week (each prompt run 10 times), all engines and regions, optimization guide, API access and email support.
Pro$249
per month for 1,000 prompts checked weekly, billed monthly
10,000+ AI queries a week, advanced reporting and analytics, priority email support.
AgencyCustom
Unlimited prompts on your own schedule, 5, 10 or 20 runs per query, multi-brand monitoring, white-label reports and Slack support.
EnterpriseCustom
Everything in Agency plus a dedicated account manager, custom integrations, SLA guarantees and phone support.
Ways to pay less
Promptmonitor
- Annual discount
15% savings with yearly billing
Promptmonitor's pricing page lists yearly billing at 15% savings: Starter is $33 a month billed yearly instead of $39 billed monthly.
Sellm
No public discounts listed.
Common questions
Which is cheaper, Promptmonitor or Sellm?
As of Oct 23, 2026, Promptmonitor is cheaper to start with: $33 a month, against $89 a month for Sellm. Promptmonitor starts at $33 per month for 25 prompts, billed yearly ($39 billed monthly), and Sellm starts at $89 per month for 200 prompts checked weekly.
Which has a free plan, Promptmonitor or Sellm?
As of Oct 23, 2026, neither Promptmonitor nor Sellm has a free plan. Both have a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.