Sure Oak and Geology operate in adjacent parts of the search stack. Sure Oak is an SEO and link-building agency, founded by Tom Casano, that runs technical audits, content optimization, and outreach-led link campaigns on retainer. Geology is a software platform for Generative Engine Optimization that measures how brands appear across ChatGPT, Perplexity, Gemini, Copilot, and Google AI Overviews and ships the page-level fixes the data points to. If you need a team to run a traditional organic SEO and backlink program, Sure Oak is the right fit. If you need to track and act on AI search visibility, Geology is built for that.
At a glance
| Dimension | Geology | Sure Oak |
|---|---|---|
| Best for | Teams that need AI visibility plus execution | Teams that want managed SEO and link building |
| AI platforms tracked | ChatGPT, Perplexity, Gemini, Copilot, Google AI Overviews | Not a focus area |
| Execution support | Yes. Page audits, prompt monitoring, content briefs, agentic optimization | Yes. SEO strategy, technical audits, outreach links |
| Pricing model | Subscription, transparent | Monthly retainer, custom quote |
| Time to first insight | Same-day audit | Onboarding cycle (weeks) |
| Reporting | Self-serve dashboard plus exports | Account-manager reporting |
| Best paired with | A team that wants AI visibility on top of organic SEO | An in-house team without an SEO operator |
What Sure Oak does
Sure Oak is an SEO agency that focuses on three things: technical SEO audits, content strategy, and outreach-driven link building. Per the Sure Oak homepage, the team is positioned around mid-market clients that want a senior SEO partner running the program end-to-end, with a public emphasis on white-hat link prospecting and earned placements. The agency was founded by Tom Casano, has a steady library of SEO content and tools, and is known in the SEO community for case studies and a detailed approach to link velocity. The retainer model pays for strategists, technical SEOs, content editors, and link prospectors working a defined scope each month.
What Geology does differently
Geology is software, not a retainer. It tracks how AI assistants describe your brand and category across ChatGPT, Perplexity, Gemini, Copilot, and Google AI Overviews, and pairs measurement with execution. Page audits flag the URLs an AI is misreading, prompt management captures the questions buyers actually run, the content workspace turns gaps into briefs, and an agentic optimization layer ships common fixes (schema, FAQ structure, internal linking) automatically. The job is different from organic SEO. Backlinks still matter, but the new layer is whether ChatGPT cites you when a buyer asks about your category. Geology measures that, then closes the loop with structured fixes the same week. For teams that already have an SEO partner, Geology covers what a link-building retainer does not address.
Pricing
Sure Oak runs custom-quoted monthly retainers scoped to SEO services and link volume. Geology is a transparent subscription with public tiers and no procurement cycle. The two are not direct substitutes: a Sure Oak retainer pays for human-led SEO strategy and link outreach, while Geology pays for AI visibility measurement and a software-driven optimization layer.
When Sure Oak wins
If you need an SEO team running a traditional organic program with white-hat link building attached, Sure Oak is built for that. Earned placements still need human relationships, and a software platform will not pitch your guest post to a target editor.
When Geology wins
If the gap is AI search visibility, Geology is the right buy. The platform reports how ChatGPT and Perplexity describe your category, identifies the prompts losing you to competitors, and ships schema and content fixes without a retainer cycle. For teams already running organic SEO, Geology covers the layer that link agencies do not.