Athena HQ vs Radarkit in 2026: Free GEO audit + content gap vs $29/mo 4-engine API tracker
Athena HQ has a free Essential tier with content gap analysis on ChatGPT, Claude, Gemini, and Perplexity. Radarkit starts at $29/month with API access included on every plan and citation source analysis on Growth.
Athena HQ
Radarkit- Athena HQ has a free Essential tier with real Generative Engine Optimization (GEO) audit functionality. Radarkit has no free tier; pricing starts at $29/month on Lite with API access included.
- Both tools cover the same four engines: ChatGPT, Claude, Gemini, and Perplexity. The differentiator is editorial depth: Athena HQ includes content gap analysis on the free tier; Radarkit offers citation source analysis on Growth.
- Radarkit includes API access on every paid plan, including the $29/month Lite tier. Athena HQ locks API access to the $295/month Starter tier. For budget-conscious teams that need API access on day one, Radarkit is the cheaper choice.
- Athena HQ includes unlimited competitor benchmarking on the $295/month Starter tier. Radarkit limits competitor benchmarking to Growth ($79/month) and above.
- Athena HQ includes content gap analysis as a core differentiator. Radarkit focuses on citation source identification and competitor benchmarking. The two approaches are complementary but distinct.
- Neither tool includes white-label delivery or Google AI Overviews coverage, which limits both for agencies managing multiple clients.
Choosing between Athena HQ and Radarkit is a question about whether you want a free starting tier with content gap depth or a $29/month self-serve tracker with API access included. Both tools cover the same four engines: ChatGPT, Claude, Gemini, and Perplexity. Athena HQ has a free Essential tier with content gap analysis tied to citation data, while Radarkit starts at $29/month with API access included on every plan and citation source analysis from the Growth tier. Athena HQ is the right pick if you want to start with a free GEO audit and pay for content gap depth at $295/month. Radarkit is the right pick if you have $29-79/month budget for an AI visibility tracker with API access on day one. The right pick depends on whether free entry plus content depth beats $29/month entry with API access.
The tools at a glance
Athena HQ
Free-to-start GEO audit platform with citation gap analysis and API access on paid plans
Athena HQ is a generative engine optimization platform built around a free GEO audit, paired with paid plans that unlock deeper analysis. It tracks brand appearances across ChatGPT, Claude, Gemini, and Perplexity on all tiers, including the free Essential plan. The standout feature is the Essential tier itself: a genuine free plan that runs a real audit of your AI citation performance, surfaces which competitors are winning in your category, and identifies content gaps that may be holding your brand back.
The paid plans focus on depth rather than coverage. Citation source tracking, unlimited competitor benchmarking, and API access unlock at the $295/month Starter tier, with no mid-priced option in between. The content gap analysis is the centerpiece of the platform: Athena HQ compares your site content coverage to the topics AI models are pulling from competitor sites, and flags specific topic areas to prioritize in your content calendar.
The main gap versus Radarkit is API access timing. Athena HQ locks API access to the $295/month Starter tier, while Radarkit includes API access on every paid plan starting at $29/month. For budget-conscious teams that need programmatic access on day one, Radarkit is the cheaper choice. For teams whose priority is free entry plus content gap depth at $295/month, Athena HQ is the focused choice.
| Feature | Essential Free | Starter $295/mo | Enterprise Contact |
|---|---|---|---|
| AI models tracked | 4 | 4 | 4 |
| GEO audit | ✓ | ✓ | ✓ |
| Content gap analysis | Basic | Full | Full |
| Citation source tracking | ✗ | ✓ | ✓ |
| Competitor benchmarking | 2 competitors | Unlimited | Unlimited |
| API access | ✗ | ✓ | ✓ |
| White label | ✗ | ✗ | ✗ |
Radarkit
AI brand monitoring across ChatGPT, Claude, Gemini, and Perplexity with API access
Radarkit monitors brand mentions and citations across ChatGPT, Claude, Gemini, and Perplexity. The platform tracks how often a brand appears in AI-generated answers, which sources the AI models cite, and how visibility compares to competitors over time.
Where Radarkit stands out is its pricing accessibility. At $29/month for the Lite plan, it is one of the cheapest ways to get structured AI visibility data with API access included. Most tools at this price point are either read-only dashboards or restrict API use to higher tiers. Citation source identification is particularly useful: it tells teams which websites and content pieces AI models are using when they mention a brand, giving a starting point for content strategy decisions.
The trade-off versus Athena HQ is the absence of a free tier and content gap analysis. Radarkit focuses on citation source analysis and competitor benchmarking without editorial recommendations. For teams that want $29/month entry with API access and citation source tracking, Radarkit is the practical choice. For teams that want a free audit plus content gap depth, Athena HQ is the more appropriate fit.
| Feature | Lite $29/mo | Growth $79/mo | Pro $139/mo | Enterprise Contact |
|---|---|---|---|---|
| AI models tracked | 4 | 4 | 4 | 4 |
| API access | ✓ | ✓ | ✓ | ✓ |
| Competitor benchmarking | ✗ | ✓ | ✓ | ✓ |
| Citation source analysis | ✗ | ✓ | ✓ | ✓ |
| Historical trend data | 30 days | 90 days | Unlimited | Unlimited |
| White label | ✗ | ✗ | ✗ | ✗ |
Head-to-head feature comparison
| Feature | Athena HQ | Radarkit |
|---|---|---|
| AI engines tracked | ChatGPT, Claude, Gemini, Perplexity | ChatGPT, Claude, Gemini, Perplexity |
| Competitive share-of-voice | Yes | Yes |
| Prompt-level citation data | Yes | Yes |
| Answer / content gap analysis | Yes (content gap analysis) | No (citation source analysis instead) |
| Category intelligence | No | No |
| AEO content generation | No | No |
| Crawler / AI bot log access | No | No |
| Page content audits | No | No |
| API access | Paid plans only (Starter $295/mo+) | Yes (Lite $29/mo+) |
| Looker Studio / BI connector | No | No |
| White-label delivery | No | No |
| Pay-per-prompt pricing | No | No |
| Agency multi-brand support | Limited | Limited |
| Starting price | Free (Essential) | $29/mo |
Considering AI Peekaboo alongside Athena HQ and Radarkit?
Both Athena HQ and Radarkit lack white-label client delivery and skip Google AI Overviews and Google AI Mode coverage, which limits both tools for agencies running multiple client brands. AI Peekaboo is the best AI visibility tool for SEO agencies, with white-label reports, guest access links, and 5 AI surfaces including Google AI Overviews and Google AI Mode on every plan from $50/month. Built for agencies and marketing teams that need self-serve AEO monitoring with API access and multi-brand agency support.
Read the AI Peekaboo review →Which should you choose?
Athena HQRadarkitAthena HQRadarkitRadarkitAthena HQAthena HQAthena HQ and Radarkit cover the same four AI engines with monitoring and citation tracking, but address slightly different problems at different price points. Athena HQ is built around content gap analysis that surfaces what to write next. Radarkit is built around citation source identification that surfaces what AI models are pulling from. Both are valid Generative Engine Optimization (GEO) tools; the choice depends on budget tier and which action layer matters more.
Bottom line
If your priority is starting with a free GEO audit and content recommendations on a credit card, Athena HQ at free or $295/month is the practical choice. If your priority is $29/month entry with API access and citation source tracking on Growth, Radarkit is the more appropriate fit. Both cover the same four engines; the question is whether free or $29/month entry matters more for your team.
Frequently asked questions
How does Athena HQ compare to Radarkit for AI visibility?
Both track ChatGPT, Claude, Gemini, and Perplexity. Athena HQ has a free Essential tier with content gap analysis and a $295/month Starter tier with API access. Radarkit has no free tier; pricing starts at $29/month on Lite with API access included. Athena HQ fits teams that want a free entry plus content depth. Radarkit fits teams that want $29/month entry with API access on day one.
Which tool has cheaper API access?
Radarkit includes API access on the $29/month Lite tier, which is the cheaper API entry point in this comparison. Athena HQ locks API access to the $295/month Starter tier. For budget-conscious teams that need programmatic access, Radarkit is more economical.
Does Athena HQ include content gap analysis on the free tier?
Yes. The Essential free plan includes a basic version of content gap analysis, comparing your site content coverage to topics AI models are pulling from competitors. Radarkit does not include content gap analysis; it focuses on citation source tracking and competitor benchmarking. For editorial recommendations at free, Athena HQ is the appropriate choice.
Which tool is better for citation source tracking?
Radarkit is the stronger fit for citation source tracking. Citation source identification is a core feature at the Growth tier ($79/month), showing which URLs AI models are pulling from when they mention a brand. Athena HQ includes basic citation source tracking on Starter at $295/month.
Does Radarkit offer a free tier?
No. Radarkit does not offer a free tier; pricing starts at $29/month on Lite. Athena HQ has a permanent free Essential plan. For teams that want to evaluate indefinitely on a free plan, Athena HQ is the practical choice.
Which tool should I pick if I have $50-150/month budget for an AI visibility tool?
Radarkit is the practical choice in this budget band. The Lite plan at $29/month includes API access and citation tracking on the four major engines. The Growth plan at $79/month adds competitor benchmarking and citation source analysis. Athena HQ's Starter at $295/month is above this band. For tight budgets under $150/month, Radarkit is the more accessible option.