Comparison
Otterly.AI alternative: OpenSEO vs Otterly.AI
Otterly.AI is a dedicated AI search monitoring tool on a monthly plan. OpenSEO tracks AI visibility per prompt run, with no subscription, next to a full set of SEO tools. Here is how they differ.
Starting price
Otterly.AI pricing vs OpenSEO
Otterly.AI Lite: $29 a month ($25 a month billed yearly) for 15 prompts.
- ChatGPT, AI Overviews, Perplexity and Copilot; others are paid add-ons
- Unlimited team members and brand reports
- API and MCP from Standard ($189 a month)
List prices, checked in October 2026. Otterly.AI sets its own prices and changes them; check its pricing page for current figures. OpenSEO's data costs are at the time of writing; see Pricing.
OpenSEO vs Otterly.AI: feature comparison
| Otterly.AI | OpenSEO | |
|---|---|---|
| Source code | Closed | Open source (MIT), self-hostable |
| Price model | Monthly plan by number of prompts, from $29 for 15 | Pay per prompt run, priced before it runs |
| AI engines | 4 included; Gemini, AI Mode and Claude as add-ons | 120+ models to choose from |
| Classic SEO | Not included | Keywords, rank tracking, backlinks, site audit and Search Console |
| AI Overviews | Tracked as an AI engine | AI Overview checker for up to 100 keywords, $0.01 each |
| API and agents | From the $189 Standard plan | 66 MCP tools and a REST API on every install |
When to choose Otterly.AI
- AI visibility is all you need, tracked daily, with ready-made brand reports for a team.
- You want GEO audits and recommendations specific to AI search.
When to choose OpenSEO
- You want to test prompts and models first, without committing to a monthly plan.
- You want AI visibility next to your rankings, keywords and backlinks.
- You want API and MCP access without the higher plan.
FAQ
OpenSEO vs Otterly.AI FAQ
Is OpenSEO a free Otterly.AI alternative?
The software is: OpenSEO is open source under the MIT licence and free to self-host, with no seats and no plan. Search data, like keyword volumes, rankings and backlinks, is paid per lookup at the price shown before it runs, so a quiet month costs little. The crawler, the site audit and your Search Console data cost nothing.
Is the data as good?
OpenSEO’s search data comes from YepAPI, a provider of a large commercial SEO dataset. It covers keyword volume, rankings, backlinks and SERPs well, but the big suites run their own crawlers and keyword databases, which are larger. For most site owners the difference matters less than the price; for agencies doing link research all day it can matter more.
What does OpenSEO actually cost?
The software is open source and free to self-host. Search data is paid per lookup, at the price shown before it runs: about $0.08 for a keyword search of 150 ideas, $0.02 to $0.10 for a rank check (top 20 to top 100). Tracking 100 keywords daily on desktop costs about $60 a month at the top 20.
Otterly.AI is a trademark of its owner. OpenSEO is not affiliated with or endorsed by Otterly.AI.