Short answer: the cheapest Ahrefs alternative that still covers a small team’s real workload (500 tracked keywords, AI-search tracking, MCP access for your agents) is Mangools Premium at $52.70/mo billed annually, and the closest like-for-like swap is SE Ranking Core at $129/mo, the same sticker as Ahrefs Lite with far more tracking. If you only need a quick look at competitors, Ahrefs’ own $29 Starter plan is the cheap option, as long as you can live with its limits.
Most people searching for a cheaper Ahrefs aren’t upset about the $129 sticker. They’re upset about the credits. On Lite you get 1,000 credits per user a month, and Ahrefs charges 1 credit every time you open a report, plus another each time you apply a filter, change a date range or open the SERP viewer. Run out mid-month and the top-up is $50 per 500 credits. So the real question is what each tool costs at the way you actually work. That’s the table below.
The real-cost matrix
Prices checked on 26 Sep 2026 on each vendor’s own pricing page (as of September 2026), monthly billing unless noted. The workload: one user, one site plus competitors, 500 tracked keywords, AI-search tracking switched on, and MCP access so Claude or Cursor can query the data. Rows marked est. are my estimates, with the assumption stated under the table.
| Tool | Price (Sep 2026) | Cost at the workload | MCP / API | AI-search tracking |
|---|---|---|---|---|
| Ahrefs Lite | $129/mo | $129; est. $179 in a heavy month | API + MCP included | 5 prompts; Brand Radar AI from $199/mo |
| Ahrefs Starter | $29/mo | Doesn’t fit (50 keywords) | Not listed | No |
| SE Ranking Core | $129/mo, $103.20 annual | $129 | 25K API credits + MCP | 100 prompts included |
| Semrush Starter | $199/mo, $165.17 annual | $199 | MCP; API only on Advanced ($549) | 50 prompts included |
| Mangools Premium | $52.70/mo billed annually | $52.70 (annual) | API + MCP included | 500 prompts included |
| Moz Pro Medium | $179/mo, $143 annual | est. $199 (+ Moz API from $20) | MCP via separate Moz API | 100 prompts included |
| Ubersuggest Business | $27.17/mo billed annually | Doesn’t fit (150 keywords/project) | No API | 15 prompts/project, biweekly |
| Screaming Frog | Free to 500 URLs, $279/yr | $0 to $23/mo (audits only) | None listed | No |
| OpenSEO | $10/mo incl. $10 usage | $10 plus usage | MCP-first | Pay per check (about $1.09 each) |
And what each plan actually limits, plus the job it replaces:
| Tool | The limit that bites | Best job it replaces |
|---|---|---|
| Ahrefs Lite | 1,000 report credits/user, 750 tracked keywords, 5 projects | The benchmark |
| Ahrefs Starter | 200 credits, 50 tracked keywords, 250 rows per report, monthly only | Occasional competitor peeks |
| SE Ranking Core | 2,000 tracked keywords, 10 projects, 50K export rows | Full Ahrefs swap |
| Semrush Starter | 500 tracked keywords, 5 sites | SEO + AI search in one login |
| Mangools Premium | 500 keyword lookups/day, 700 tracked keywords, weekly rank updates | Keyword research + rank tracking |
| Moz Pro Medium | 1,500 tracked keywords, 5,000 keyword queries/mo | Link metrics (DA) + tracking |
| Ubersuggest Business | 500 credits/mo, no API | Budget keyword ideas |
| Screaming Frog | 500-URL crawl cap on free | Technical site audits |
| OpenSEO | Cost scales per call (about $0.05 per keyword search, $0.08 per backlink check) | Agent-driven SEO research |
Two things jump out. Mangools is the only flat-rate subscription that fits the whole workload for under $60 a month, and it ships API, MCP and AI-search tracking in the base price. The catch is weekly rank updates on Basic and Premium (daily only on Agency). Monthly billing costs more: the page lists Premium at $972 a year before the annual discount, and the monthly figure it showed varied by region when I checked, so confirm yours at checkout. Second, “MCP access” is now table stakes: Ahrefs, SE Ranking, Semrush, Mangools, Moz and OpenSEO all have a way to pipe data into an agent. What differs is which plan includes it.
The estimates, shown. Ahrefs heavy month: my assumption, not Ahrefs’ number. About 15 credit-consuming clicks per research session, 60 to 90 sessions a month, lands between 900 and 1,350 credits, so a heavy month needs one $50 top-up on top of $129. Count your own clicks for a week before you trust it. Moz: $179 plus the cheapest Moz API tier at $20, because Moz’s MCP server runs through the API, not the Pro plan.
The alternatives, one card each
SE Ranking: the closest full swap
SE Ranking covers keyword research, backlinks, rank tracking and audits in one place, and Core gives you 2,000 daily-tracked keywords against Ahrefs Lite’s 750. Ignore the “from $44 to $52” figures still floating around: the pricing page now starts at Core, $129/mo or $103.20 on annual billing. Core also tracks 100 AI prompts a day against Ahrefs Lite’s 5.
Gotcha: it isn’t cheaper than Ahrefs Lite, just more generous at the same price. The deeper AI toolkit (AI Results Tracker across AI Overviews, AI Mode, Perplexity and ChatGPT, with 200 prompts) is an $89/mo add-on ($71.20 annual), which puts you at $218.
Semrush: the widest toolset, not the cheapest
Semrush’s entry SEO plan is $139/mo and already includes AI-search performance tracking. MCP access starts on the $199 Starter plan. Pick it when you also run paid search or content and want one login. Pick something else if cheaper is the actual brief.
Mangools: cheapest plan that fits the workload
KWFinder, SERPWatcher and friends, now bundled with AI Search Watcher and API and MCP on every plan. Basic is $37.70/mo on annual billing but tracks only 200 keywords, so a 500-keyword team needs Premium. Great for solo marketers and small teams who found Ahrefs overwhelming.
Gotcha: weekly rank updates below the Agency tier. If you react to daily ranking moves, that’s a real limit.
Moz Pro: the calm one, now with AI visibility
Moz’s $49/mo starter plan covers one site. Standard at $99 tracks 300 keywords with only 150 keyword queries a month, so the 500-keyword workload needs Medium at $179. Standard and up include AI visibility dashboards across GPT, Gemini, Google AI Mode and Perplexity.
Gotcha: MCP goes through the Moz API, which is priced separately.
Ubersuggest: cheapest sticker, thinnest data
$16/mo billed annually for one site and 125 tracked keywords. Fine for keyword ideas on a side project. It has no API access, so it’s out if you want your agents in the loop.
Screaming Frog: the technical crawler
A desktop crawler, free up to 500 URLs and $279 a year for unlimited crawling. It won’t replace Ahrefs’ backlink data. For on-site issues it replaces Ahrefs Site Audit outright.
OpenSEO: pay-per-use, built for agents
OpenSEO is the honest entry most lists skip. It’s MIT-licensed on GitHub, runs on DataForSEO, and the hosted version is $10/mo including $10 of usage, with keyword research, backlinks, rank tracking, audits and AI visibility exposed over MCP. You can self-host and pay DataForSEO directly; the hosted service adds 28% on each DataForSEO request. If your team already lives in Claude Code and you mostly run ad-hoc research, this is probably the cheapest serious option on the page.
Gotcha: cost scales with usage, and AI brand checks at about $1.09 each add up fast if you track many prompts.
RunAgents: when you need to know what changed, not look it up
Every tool above answers questions you remember to ask. RunAgents watches your SEO, your AI-search visibility and your competitors, and sends real-time alerts to Slack, Discord, Telegram or email when something moves: a ranking drop, a lost AI citation, a competitor’s pricing or changelog change. Over MCP, your agents can query the joined picture (rankings next to AI share of voice next to competitor moves) instead of three separate exports. It won’t replace a deep backlink dig in Ahrefs, and it isn’t sold as the cheaper option. It’s for teams whose problem is missing changes, not running reports. More on the MCP side in our roundup of MCP servers for marketing teams.
The free stack
If the budget is zero, three free tools cover more than most people expect:
- Google Search Console: your real clicks, impressions, queries and average position on Google. This is first-party data, which no third-party estimate beats for your own site.
- Ahrefs Webmaster Tools: free Site Explorer and Site Audit for sites you verify, with 5K crawl credits per project a month and up to 1K backlinks and keywords visible at once.
- Screaming Frog free: crawl up to 500 URLs for technical issues.
What’s missing: competitor research at scale and AI-search tracking. Add Ahrefs Starter at $29 for competitor peeks, or OpenSEO’s pay-per-use for both.
Semrush vs Moz vs Ahrefs: the quick verdict
- Ahrefs if backlink research is the core of your job and credits don’t bite at your volume.
- Semrush if you want SEO and AI-search tracking in one plan and also run PPC or content. It costs more at entry ($139 vs $129) but bundles more.
- Moz if you want the gentlest learning curve and AI visibility from the $99 Standard plan up. You give up data depth: Standard’s 150 keyword queries a month won’t last a busy team a week.
For teams choosing mainly on AI-search features, our AI visibility tools comparison goes deeper.
Why Moz DA and Ahrefs DR disagree
They’re different formulas on different link indexes. Moz calls Domain Authority a 1 to 100 score from a machine-learning model that predicts how likely a site is to rank, relative to other sites. Ahrefs describes Domain Rating as a logarithmic 0 to 100 score calculated roughly like PageRank between websites, where nofollow-only links add nothing. A site can gain DR and lose DA in the same month, and neither is a Google metric: Moz itself says DA is not used by Google. Compare a site against its competitors in one tool, never across tools.
How to choose
- You mostly research keywords and track ranks: Mangools, or SE Ranking if you need daily tracking.
- You live in backlinks: stay on Ahrefs, or try SE Ranking’s backlink data first.
- You want AI-search tracking bundled: Mangools on a budget, SE Ranking or Semrush if you need more depth.
- You work through Claude or Cursor and want to pay per question: OpenSEO.
- Budget is zero: Search Console + Ahrefs Webmaster Tools + Screaming Frog free.
- Your gap is noticing changes across SEO, AI search and competitors: RunAgents alongside whichever research tool you keep.
Questions people actually ask
What’s the cheapest Ahrefs alternative that isn’t a toy? For a 500-keyword workload with agent access, Mangools Premium at $52.70/mo billed annually. For lighter, ad-hoc research through an agent, OpenSEO at $10/mo plus usage.
When did Ahrefs launch the $29 Starter plan? 2 September 2024. It includes 200 credits and 50 tracked keywords, and it renews monthly only.
Do I need a toxic backlink checker from any of these tools? Probably not. In May 2024 Google’s John Mueller put it bluntly: “The concept of toxic links is made up by SEO tools so that you pay them regularly.” Disavow is for manual actions or links you bought, not for a tool’s toxicity score.
Can I query these tools from Claude or ChatGPT? Yes, most of them now. Ahrefs (Lite and up), SE Ranking, Semrush (Starter and up), Mangools, Moz (via its API) and OpenSEO all offer MCP access. Check which plan includes it before you buy.
Where RunAgents fits
If you’re leaving Ahrefs because the credits hurt, the matrix above will save you money. If you’re leaving because you keep finding out about ranking drops, lost AI citations and competitor launches a week late, a cheaper database won’t fix that. Set up RunAgents to get real-time alerts on your rankings, AI-search visibility and competitor moves, and give your agents that joined picture over MCP.