llmstxt.studio vs Prominara (2026): which should you pick?

Pick llmstxt.studio if

• Fits if you want a free, detailed check of what AI crawlers can reach on your site
• Works for teams that want an email when an llms.txt or sitemap breaks after a deploy, from Pro

Look elsewhere if

• Not for you if you want to track mentions across AI engines, as the citation check uses one engine it doesn't name
• Tight if you stay free: 3 AI-written files and 50 citation checks, once, never renewed
• Watch out: prices are shown in pounds even from the US, and the page description quotes $19.90 a month with no dollar price behind it
• Watch out: the vendor says Google Search doesn't read llms.txt and no major AI provider has confirmed using it
• Skip it if you need integrations or an API, as none are listed

Pick Prominara if

• Fits if you want to know whether a change moved AI answers, rather than guessing from the trend
• Works for agencies reporting to a few clients under their own brand, from Pro

Look elsewhere if

• Skip it if you need daily checks, as prompts are re-checked weekly at most
• Tight if you start on Starter: 15 prompts on 2 of the 5 AI surfaces, checked every two weeks
• Pricey if you want all five surfaces or white-label reports, which start on Pro at $149 a month
• Too light for agencies with more than 3 clients, as Agency includes 3 workspaces and more means asking sales
• Watch out: plans bill monthly, and yearly billing is arranged by email with no saving stated

llmstxt.studio

• Prices are shown in pounds by default, from the US too; the meta description says $19.90 a month but no dollar figure appears in the price data.
• The free account's 3 AI generations and 50 citation checks are one-time allowances that do not renew.
• The citation check runs against an AI search engine it does not name, so it is not a multi-engine tracker.
• The vendor says Google Search does not read llms.txt and that no major AI provider has confirmed using it.

Prominara

• Starter covers only 2 of the 5 AI surfaces, checks every two weeks rather than weekly and has no white-label reports.
• Prompts are re-checked weekly at most, not daily; the vendor says this is deliberate to judge changes against noise.
• Plans are billed monthly; annual billing is arranged by email, and the page states no saving for it.
• Agency includes 3 client workspaces; more clients means asking sales to raise the limits.

llmstxt.studio

AI Readiness Audit

41 checks in five groups: whether AI crawlers can reach the site, find its key pages, understand the content, read structured data and quote it safely.

Named AI crawler checks

Reads robots.txt the way crawlers do and reports whether GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot and Google-Extended are allowed.

llms.txt generator

Writes an llms.txt from the sitemap, with AI-written page descriptions; a free account gets 3 AI generations and Pro has no limit.

Deep Site Crawl

Runs the 18 page-level checks on up to 100 pages a run on Pro or 500 on Premium, showing which pages fail which check.

Audit monitoring

Daily re-audits and sitemap checks on paid plans, emailing only when the score moves, a check flips or the llms.txt disappears.

AI Citation Check

Writes 8 queries from your llms.txt, runs them against an AI search engine and reports where you stand and which competitors were named.

Prominara

Prompt tracking on five AI surfaces

Puts tracked buyer questions to ChatGPT, Perplexity, Gemini, Google AI Overviews and AI Mode, counting mentions and citations apart, with position and sentiment.

Source gaps and playbooks

Ranks the pages each answer cites and, where competitors are cited and you are not, writes a playbook with steps, effort and risks.

Share of voice

Shows how often AI names you against each competitor, engine by engine, counting only prompts that do not name you, with a range on each figure.

Site audit and generators

Scores more than 40 page and site checks into a 0 to 100 GEO score and generates llms.txt, robots.txt, sitemap and JSON-LD schema from the crawl.

Impact measurement

Log a change and it compares the prompts you worked on with ones you did not touch over 7, 14 and 28 days, giving a probability rather than a yes or no.

Accuracy monitor and agent access

Flags wrong facts AI states about your brand with a correction playbook, and an MCP connection lets Claude, ChatGPT, Cursor or Codex use the workspace.

llmstxt.studio

• Free£0

  The 41-check audit with fixes, 1 site, 3 AI-written generations ever, 50 citation checks ever and manual monitoring.

• Pro£15.83

  per month for 3 sites, billed annually (£19.99 billed monthly)

  Daily re-audits and sitemap checks with email alerts, 10 deep crawls of 100 pages a month, 100 citation checks and 10 custom prompts a month.

• Premium£40.83

  per month for 20 sites, billed annually (£49.99 billed monthly)

  30 deep crawls of 500 pages a month, 500 citation checks and 50 custom prompts a month, every competitor shown, longer history and priority support.

• EnterpriseCustom

  Unlimited sites and checks, crawls up to 5,000 pages and history kept for the life of the account. Sold through sales.

Prominara

• Starter$29

  per month for 15 prompts on 2 AI platforms, billed monthly

  1 website, citation checks every two weeks, 10 pages audited in depth per run, 3 months of history and 3 llms.txt or schema generations a month.

• Pro$149

  per month for 50 prompts on 5 AI platforms, billed monthly

  3 websites, weekly checks on all five AI surfaces, 50 pages audited per run, 12 months of history, unlimited generators and 5 white-label reports a month.

• Agency$299

  per month for 120 prompts on 5 AI platforms, billed monthly

  3 client workspaces with 6 websites, 200 pages audited per run, 24 months of history, unlimited white-label reports and client portals.

llmstxt.studio

• Annual discount

  Save at least 18% with annual billing

  The pricing page shows Save 18% on annual billing: Pro is £190 a year instead of £19.99 a month, Premium £490 a year instead of £49.99 a month.

Prominara

No public discounts listed.