Your competitors keep appearing above you when buyers search for your category. Now they are also being recommended in ChatGPT and Google’s AI results.
Publishing more content may close part of the gap, but your rankings also depend on technical health, site structure, authority, and how clearly your brand is represented across the web. Coordinating all of that can exceed the time and expertise available in-house.
An organic search agency can take a wider view of the program and identify where your team should focus.
This guide reviews 13 agencies across B2B SaaS, e-commerce, international, and enterprise SEO. I’ve organized them by use case so you can build a relevant shortlist. You’ll also learn about an alternative to consider when an agency is more than what you need.
Quick overview of the best organic SEO agencies
This is not a ranking from strongest to weakest. Each agency solves a different type of organic search problem.
| Agency | Choose it for | Starting cost |
| RankingOnAI.com | AI search and organic growth for SaaS | $4,000/month |
| Omniscient Digital | B2B software SEO tied to pipeline | $10,000/month |
| Foundation | B2B content distribution and AI visibility | Custom |
| Kairos Labs | Founder-led SEO and AEO for complex B2B products | $9,500 project or $6,500/month |
| Position Digital | Full-service B2B SEO at a lower entry point | Custom |
| Flying Cat Marketing | International SEO for B2B SaaS | Custom |
| Skale | SaaS SEO measured against signups and revenue | From $4,000/month |
| Discovered Labs | SEO and AEO execution for B2B SaaS | $7,995 |
| WebFX | Broad execution and revenue reporting | $3,000/month |
| Re:signal | International e-commerce SEO | Custom |
| Blue Array | Organic search for regulated B2B markets | Custom |
| iPullRank | Enterprise technical SEO and AI search | $15,000/month for AI Search Strategy |
| Agency Elevation | White-label SEO for marketing agencies | $429/domain/month |
These starting costs come from current public pricing. Some apply to a specific service or package. Your quote will depend on the site, markets, production volume, and implementation support you need.
If you run content at a SaaS company, you can find more category-specific options in this comparison of the best SaaS SEO agencies.
What is an organic SEO agency?
An organic SEO agency helps your company attract customers from unpaid search results.
That work now extends beyond Google’s conventional listings. Buyers may also discover your company through Google AI Overviews, ChatGPT, Perplexity, Gemini, Claude, Reddit, YouTube, and third-party comparison articles.
A complete organic search program can cover:
- Keyword and buyer research
- Technical audits and implementation
- Website architecture
- Product and service page optimization
- Content strategy and production
- Internal linking
- Link acquisition and digital PR
- International SEO
- AI-search visibility
- Analytics and conversion reporting
You may not need every service. A company with strong technical foundations could need content and links. Another may have hundreds of useful articles sitting on a site that search engines struggle to crawl.
Start with the part of the program that limits growth. This diagnostic breakdown of why a website may not appear on Google can help you separate an indexing problem from weak rankings or low click-through rates.
You should also check whether your team needs outside execution at all. Better SEO tools may close the gap when you already have the expertise and capacity to act on the data.
How I chose these organic SEO agencies
I haven’t worked with all 13 agencies. I reviewed their current service pages, methods, case studies, pricing, and client testimonials.
Each company needed a clear reason to make the list. A long service page was not enough.
I looked for documented organic search work, a defined delivery model, and evidence tied to a useful business result. Traffic growth counted, but leads, signups, sales, and revenue carried more weight.
The agencies have case studies too. Use them to identify a suitable candidate, then ask for proof from a client with a similar website and market.
A structured process for finding a good SEO company will help you verify the team and methods behind the sales presentation.
1. RankingOnAI.com: Best for AI search-led SaaS SEO
Best for: SaaS companies that want to appear in ChatGPT, Perplexity, Google AI Overviews, and traditional search results.
RankingOnAI.com is one of the clearest choices for a SaaS company that treats AI search as part of customer acquisition.
The agency’s work covers content, citations, programmatic SEO, technical SEO, AEO, and off-site visibility. This gives the team enough scope to improve your website and the third-party sources AI tools may use when recommending products.
For an enterprise SaaS client, RankingOnAI created a product-led page around a high-intent feature search. The page generated 1,800 clicks and more than 50,000 impressions, leading to $30,000 in direct sales.
Their work for editGPT shows a different route. RankingOnAI targeted “best AI proofreader,” built a detailed comparison asset, and secured supporting mentions from relevant sites. Google’s AI Overview later displayed editGPT beside Grammarly for the query.
Choose RankingOnAI when AI recommendations are already shaping how buyers compare products in your category. Its SaaS focus also reduces the time needed to explain trials, demos, product-led acquisition, and recurring revenue.
Services
AI SEO strategy, AEO, content production, programmatic SEO, technical SEO, citation building, and off-site visibility.
Pricing
Retainers start at $4,000 per month.
2. Omniscient Digital: Best for B2B software SEO tied to pipeline
Best for: Established B2B software companies that need organic search to generate qualified leads and sales opportunities.
Omniscient Digital is a strong choice when leadership expects SEO to contribute to pipeline.
Every engagement starts with research into the product, buyers, competitors, and current performance. The team then builds a program that may include technical SEO, new content, content updates, link building, and GEO.
The agency’s work with 360Learning shows how this approach connects to revenue. Omniscient prioritized topics with clear commercial intent and matched each page with a relevant gated asset. The program increased sales-qualified leads from organic blog traffic by 215%. Blog-attributed pipeline doubled, while the organic conversion rate improved in the US and UK.
Omniscient can also work with your existing writers. For 360Learning, the internal team produced content from the agency’s briefs while Omniscient handled strategy, measurement, and ongoing prioritization.
Choose Omniscient when you already have a proven product and enough search demand to justify a five-figure monthly investment. The program will be harder to defend if you cannot track trials, demos, or influenced opportunities.
Services
Organic growth strategy, technical SEO, GEO, content strategy, content production, link acquisition, and reporting.
Pricing
Full-service engagements start at $10,000 per month.
3. Foundation: Best for B2B content distribution and AI visibility
Best for: B2B technology companies that need their expertise to reach buyers beyond the company blog.
Foundation combines organic search with content distribution. Its work can extend across Reddit, digital PR, social platforms, third-party websites, and AI search results.
Choose Foundation when you already have product knowledge and original ideas, but those assets receive limited visibility. The agency can turn one piece of research into content for several channels while supporting the search program behind it.
For an event-management SaaS company, Foundation cut 488 weak pages and refreshed more than 100 existing articles. It also created new content around competitive gaps. Monthly organic traffic grew from 22,500 to 58,000 over 18 months.
One refreshed article rose from 12 monthly sessions to more than 3,300. Foundation-produced URLs accounted for 58% of the company’s blog traffic by the end of the engagement. The case study provides a useful example of growing an established site without relying on constant publishing.
Foundation makes less sense for a narrow technical audit. Its wider model works when content creation and distribution need to support the same search goals.
When editorial direction is the main gap, compare Foundation with other content strategy agencies before committing to a broader organic program.
Services
SEO strategy, content production, technical SEO, AI visibility, digital PR, Reddit marketing, and content distribution.
Pricing
Custom.
4. Kairos Labs: Best for founder-led SEO and AEO
Best for: B2B companies selling complex products in cybersecurity, privacy, AI, or automation.
Kairos Labs gives you direct access to senior SEO and AEO expertise. It is a good fit when your product takes time to understand, and generic content would fail to convince the buyer.
The engagement starts with buyer research, subject-matter interviews, competitor analysis, and a review of current visibility. Kairos then maps topic clusters and builds an editorial calendar around the strongest opportunities.
Its work for CertifID increased non-branded organic clicks by 247% and contributed to 31% year-over-year pipeline growth. For Alphamoon, organic traffic grew by 247% in ten months and generated more than 300 product signups.
The smaller team is part of the appeal. You work closely with the person shaping the strategy instead of passing every question through an account manager. Kairos also limits the demands placed on your internal team once the product and editorial standards are clear.
Choose Kairos when content quality depends on real subject knowledge. Check the monthly production levels against your goals, though. The entry plan includes four articles and two backlinks per month. Large sites may need a broader delivery team.
Services
SEO and AEO strategy, keyword research, topic clustering, expert-led content, link acquisition, AI-visibility tracking, and conversion support.
Pricing
The four-week strategy sprint starts at $9,500. Ongoing execution starts at $6,500 per month.
5. Position Digital: Best for full-service B2B SEO at a lower entry point
Best for: Growing B2B companies that need content, technical SEO, authority building, and AI-search support.
Position Digital gives smaller B2B teams a practical route into full-service organic search.
The team covers strategy, technical audits, content, link building, digital PR, and AI-search optimization. You can begin with a defined problem and expand the scope as the program matures.
For HR Datahub, Position Digital used first-party salary data to create more defensible content. It refreshed key pages and added comparison articles for buyers closer to a decision. Calls to action were also updated across important pages.
Organic traffic increased by 315%. Free-trial bookings rose by 80.4% year over year, while call bookings increased by 180%. The company also gained 37 AI citations. Position Digital breaks down the work in its HR Datahub case study.
Services
SEO strategy, technical audits, content marketing, link building, digital PR, GEO audits, and AI-search optimization.
Pricing
Custom.
6. Flying Cat Marketing: Best for international B2B SaaS SEO
Best for: B2B SaaS companies expanding into the US, UK, Europe, or Latin America.
Flying Cat Marketing is a strong option when international SEO requires more than translating an English content calendar.
The agency studies how buyers search and evaluate products in each market. It then decides which existing assets can be localized and where the company needs original content. Native-language writers and local link acquisition support the strategy.
For Stonly, Flying Cat created content for several audiences across four languages. SEO-sourced conversions grew by 620%, while traffic increased by 938%. The number of ranking keywords rose from 175 to 2,577.
The strategy covered the whole funnel. Flying Cat created educational content to build topical authority before expanding into comparison pages and sales-focused articles. Product experts also contributed to the drafts, which gave the content more depth.
Choose Flying Cat when several markets need one coordinating partner. Ask who will manage each country, which writers are native speakers, and how technical localization will be handled.
Services
International SEO, B2B SaaS SEO, native-language content, technical localization, link building, and programmatic SEO.
Pricing
Custom.
7. Skale: Best for SaaS SEO measured against revenue
Best for: SaaS teams that judge organic performance through signups, SQLs, opportunities, and new revenue.
Skale builds organic growth programs around SaaS economics. Its reporting focuses on commercial metrics instead of stopping at traffic and keyword positions.
For Perkbox, Skale addressed technical issues and updated existing content. It also created new product-led pages aimed at high-intent searches. Non-branded organic SQLs increased by 102%, while sales opportunities rose by 40%. The cost per opportunity reached £110 within ten months.
Skale can take over strategy and execution or support an existing SEO manager with content and link acquisition. Choose it when your analytics can connect organic visits to meaningful product or sales actions.
Agree on the attribution model before work begins. Long SaaS buying journeys rarely fit neatly into a single last-click report.
Services
SaaS SEO strategy, GEO, technical SEO, content production, link building, outreach, and website migrations.
Pricing
Published estimates start at approximately $4,000 per month. Request a current quote based on your scope.
8. Discovered Labs: Best for SEO and AEO execution
Best for: B2B SaaS companies competing for visibility across Google and AI-generated recommendations.
Discovered Labs is one of the clearest choices for a B2B SaaS team that wants SEO and AEO handled through the same program.
The team researches conventional keywords alongside the prompts buyers use in AI tools. It then creates content and improves the technical signals that help search systems retrieve it. Off-site visibility is included where third-party sources influence recommendations.
For incident.io, Discovered Labs focused on searches linked to competitor alternatives and industry changes. Organic meetings increased by 22% within four months. AI visibility moved from 38% to 64%, while top-three keyword rankings rose from 142 to 228.
Choose Discovered Labs when you need content produced quickly and want AI visibility measured from the start. Your product experts will still need to support the team with information and timely reviews.
Services
SEO and AEO strategy, content production, technical optimization, internal linking, schema, off-site visibility, and AI-search measurement.
Pricing
The Establish plan starts at $7,995 per month. Larger custom programs start at $14,853 per month.
9. WebFX: Best for broad execution and revenue reporting
Best for: Companies that want one large agency to handle SEO alongside content, development, analytics, and CRO.
WebFX offers more delivery capacity than the smaller agencies on this list. Its team covers technical SEO, on-page optimization, content, links, AI-search visibility, development support, and revenue reporting.
Choose WebFX when your website needs work across several areas and managing separate vendors would slow the program down.
For The Difference Card, WebFX increased producer proposal requests by 77% year over year. Its work with B2B software company IGX Solutions increased brand appearances in relevant AI chatbot queries by 53%.
WebFX also uses proprietary software to connect marketing activity with leads and revenue. That can simplify reporting when leadership wants more than rankings. Ask which parts of the reporting system require you to keep using WebFX technology.
Meet the delivery team before signing. A large agency gives you access to more capabilities, but you still need regular contact with the people making strategic decisions.
Services
B2B SEO, technical SEO, content, off-page SEO, GEO, CRO, development support, analytics, and revenue tracking.
Pricing
Custom SEO plans start at $3,000 per month. Enterprise engagements cost more.
10. Re:signal: Best for international e-commerce SEO
Best for: E-commerce brands managing large product catalogs across several markets.
Re:signal is the strongest e-commerce-focused option in this guide. Its work covers technical SEO, international content, category optimization, and digital PR.
The agency understands the operational issues behind e-commerce search. Product availability changes, category pages overlap, and one template can affect thousands of URLs. Search behavior also differs between markets.
For ASICS, Re:signal coordinated an international content strategy across ten languages and fourteen countries. Organic revenue increased twentyfold over the course of the partnership. The campaign also achieved 81% year-over-year organic revenue growth in 2024 and a 438% return on investment.
The team created two content hubs and optimized important category pages around commercial demand. It also trained ASICS’ internal SEO team and supported ongoing site maintenance.
Choose Re:signal when international e-commerce revenue is the main goal. SaaS companies will find closer category experience elsewhere on this list.
Services
E-commerce SEO, technical SEO, international content, category optimization, digital PR, and AI-search visibility.
Pricing
Custom.
11. Blue Array: Best for finance and regulated B2B search
Best for: UK companies in finance, fintech, insurance, and other regulated markets.
Blue Array combines search consultancy with agency-level execution. It can support technical SEO, content, digital PR, GEO, international search, migrations, and training.
Its experience in regulated sectors makes it a sensible choice when content must satisfy search intent without creating compliance problems.
Business lender iwoca hired Blue Array after non-branded traffic fell as government loan schemes ended. The agency rebuilt visibility around permanent business-lending needs rather than temporary programs.
Non-branded organic clicks increased by 356% year over year. Clicks from business-loan searches rose by 1,581%, and more than a third of non-branded traffic came from those commercial queries.
Choose Blue Array when your internal teams need an agency that can explain recommendations and work through implementation with them. Map its publishing process to your legal and compliance reviews before agreeing on deadlines.
Services
Organic search strategy, technical SEO, content, digital PR, GEO, migrations, international SEO, and training.
Pricing
Custom.
12. iPullRank: Best for enterprise technical SEO and AI search
Best for: Large companies with complicated websites and experienced internal marketing or SEO teams.
iPullRank belongs on the shortlist when organic search problems extend into site architecture, information retrieval, templates, and internal implementation.
Its technical work can include crawl analysis, log files, content audits, and recommendations written for product and engineering teams. The agency also helps enterprise brands understand visibility across AI-generated search results.
A major automotive publisher hired iPullRank after losing half its organic traffic across several algorithm updates. The team used crawl, log-file, and search-result analysis to identify the causes. It then worked directly with product teams to turn the findings into implementable requirements.
The site gained more than 13 million visits over two years. Top-three keyword rankings increased by 119%, while the number of top-ten rankings rose by more than 430,000.
Choose iPullRank when search performance affects substantial revenue and several internal teams control the website. Companies with smaller sites can compare more suitable options before paying for enterprise depth. This list of enterprise SEO agencies includes other firms built for large and complex websites.
Services
Enterprise SEO, technical audits, content engineering, AI-search strategy, audience research, and implementation support.
Pricing
The AI Search Strategy Program starts at $15,000 per month. Larger enterprise engagements use custom pricing.
13. Agency Elevation: Best for white-label SEO fulfillment
Best for: Marketing agencies that want to sell SEO without building a full delivery team.
Agency Elevation is the outlier on this list. It works behind other agencies instead of serving the end client under its own brand.
Its white-label plans cover keyword research, on-page optimization, technical audits, content, link building, local listings, Google Business Profile management, and branded reporting.
Choose Agency Elevation when your agency has client demand for SEO but lacks enough staff to fulfill the work. Its per-domain pricing also makes it easier to calculate your margin before creating client packages.
The company’s public proof focuses on reviews, client volume, its US-based team, and industry recognition. Detailed campaign breakdowns are harder to find. Ask for anonymized examples from businesses similar to your clients. Review sample audits, content, links, and reports before attaching your name to the service.
Agency Elevation is unlikely to suit an in-house marketing leader hiring directly for one company. The relationship and reporting structure are designed for resellers.
Services
White-label technical SEO, on-page optimization, content, link building, local SEO, Google Business Profile management, and reporting.
Pricing
Plans start at $429 per domain per month. Gold and Platinum plans cost $599 and $799 per domain per month.
How much does an organic SEO agency cost?
A smaller B2B engagement can start between $2,000 and $3,500 per month. Full-service SaaS programs often begin between $6,500 and $10,000. Enterprise SEO can exceed $15,000 per month.
Those ranges cover very different amounts of work.
A lower-priced retainer may focus on strategy and a few monthly articles. A larger engagement can include technical implementation, content production, link acquisition, analytics, and support across several websites.
Your quote will depend on:
- Website size and technical condition
- Content production volume
- Target markets and languages
- Digital PR or link requirements
- Development support
- Reporting needs
- Internal approval process
Ask what will be completed within the first 90 days. The proposal should also name the work your team must handle.
Decide which SEO services to outsource before you compare retainers. This prevents you from paying for capabilities already covered in-house.
How to choose the right organic SEO agency
Identify the problem you need the agency to solve
Avoid beginning with a broad request for “more traffic.”
Find out why organic search is underperforming. You may have technical issues, weak content, poor authority, or limited production capacity. Several problems can exist at once, but one usually deserves attention first.
Your shortlist should change with the diagnosis. iPullRank is a logical choice for enterprise technical work. Flying Cat suits international SaaS expansion. Re:signal makes sense for e-commerce. Omniscient is better aligned with B2B software pipeline.
Ask for a comparable case study
A traffic result from a small blog tells you little about an international marketplace.
Request an example involving a similar business model and website. Look at what the agency inherited, which changes it made, how long implementation took, and what happened next.
Ask for supporting data where client confidentiality allows it. You should also speak with a current or former client before signing a long contract.
Clarify who will implement the work
An audit has limited value when nobody can act on it.
Ask which recommendations the agency will implement directly. Find out what remains with your writers, developers, and marketing team.
The answer should match your capacity. An agency that provides clear technical tickets may work well with a strong engineering team. A smaller company may need the agency to handle the changes inside the CMS.
Meet the people working on your account
The person leading the sales call may disappear after you sign.
Meet the strategist who will manage the engagement. Find out who performs the audit, writes the content, reviews links, and prepares reports.
Ask how often team members change. Frequent handovers can force your company to explain the product and market repeatedly.
Define success before the engagement begins
Choose metrics that reflect the job you hired the agency to perform.
A B2B company may track qualified demos, trials, and influenced pipeline. An e-commerce brand will care more about organic revenue by category and country. AI-search reporting can include citations, recommendation share, referral visits, and how the brand is described.
Rankings and traffic can show progress, but they should connect to a wider business result.
Find out what AI-search optimization changes
Nearly every SEO agency now mentions GEO or AEO.
Ask what the service changes in practice. A serious answer may include prompt research, citation analysis, structured content, entity clarity, third-party visibility, and measurement across AI platforms.
Adding FAQs to existing articles is not enough.
You may need a content partner instead
A full organic SEO agency makes sense when several parts of the program need outside ownership. Your team, however, may already have the main pieces in place.
Perhaps the technical foundations are sound. You have keyword research, reporting, and someone who owns the roadmap. The remaining constraint is turning planned topics into strong articles.
In that situation, a freelance SEO content writer can give you the execution capacity you need without replacing the rest of the program.
That is where I fit.
I write SEO and GEO content for B2B SaaS companies. My work includes comparison pages, alternatives articles, product-led guides, software roundups, and content refreshes. I research the product, interview internal experts, and deliver drafts that are ready for your team to publish.
I have written more than 400 articles for companies including HubSpot, Zapier, Vimeo, Paddle, MoEngage, Softr, and Taboola.
Here’s an example from my work with Taboola. An article I wrote about the best native advertising platforms dominates the front pages and has a yearly traffic value of $120K.
Another piece for Softr, on the best knowledge management software, has a $1.6M/year traffic value.
This strategy is also how I show up consistently for my category keyword.
You can review my SEO content writing service or see how I approach bottom-of-funnel content.
If your strategy is ready and you need someone to execute it, we should talk.
Frequently asked questions about organic SEO agencies
What is an organic SEO agency?
An organic SEO agency helps companies improve unpaid visibility in search results. Its work can cover technical SEO, content, links, digital PR, international search, analytics, and AI-generated recommendations.
What is the difference between organic SEO and paid search?
Organic SEO improves unpaid visibility. Paid search lets you purchase placements through an advertising platform.
Paid campaigns can begin generating traffic quickly. Organic results take longer, but a strong page can continue attracting buyers after the initial investment.
How much does an organic SEO agency charge?
Smaller engagements may start between $2,000 and $3,500 per month. Full-service B2B and SaaS programs commonly cost $6,500 to $15,000 per month. Enterprise and international programs can cost more.
Technical audits and strategy projects may use one-time pricing.
How long does organic SEO take?
Technical fixes and content updates can produce movement within a few weeks. New content and authority-building programs often need three to six months before a clear trend appears.
Competitive categories and newer websites may take longer. You should still expect useful work to go live during the first 90 days.
Should I hire an SEO agency or a consultant?
Hire an agency when you need strategy and execution across several parts of SEO.
A consultant works well when your internal team can execute but needs senior guidance, an audit, or support through a defined project.
Should an organic SEO agency handle AI search?
Your agency should understand how AI tools affect discovery in your category.
SEO foundations still support AI visibility. However, the program may also need prompt research, citation analysis, clearer brand information, structured content, and stronger third-party mentions.
What should I ask before hiring an organic SEO agency?
Ask these questions:
- What is limiting our organic growth?
- Have you solved a similar problem?
- What will your team implement?
- What will remain with our team?
- Who will work on the account?
- What should be live within 90 days?
- How will you measure business results?
- Can we speak with a relevant client?
Clear answers will tell you more than a long list of deliverables.
