Radarkit vs Writesonic GEO in 2026: Four engines with API from $29/mo versus 10+ engines with content rewriting
Cheapest API-enabled monitoring, or broad engine coverage plus an Action Center and white-label on Growth?
Radarkit
Writesonic GEO- Radarkit includes API access on every paid tier from $29/month. Writesonic GEO does not offer API access on any tier. For teams that need programmatic data delivery on a standard plan, Radarkit is the only answer in this AI visibility tool comparison.
- Writesonic GEO tracks 10+ AI engines including ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek, Copilot, Meta AI, Google AI Mode, and Google AI Overviews. Radarkit tracks 4: ChatGPT, Claude, Gemini, and Perplexity. Writesonic GEO wins on top-tier engine breadth.
- Radarkit Lite at $29/month is the cheapest paid entry point in the AI visibility category. Writesonic GEO Starter is $79/month with 10+ engines and content rewriting tools.
- Writesonic GEO includes an Action Center with impact-ranked recommendations and content rewriting tools that close the loop between diagnosis and execution. Radarkit is monitoring and citation source identification only.
- Writesonic GEO includes white-label delivery on Growth ($399/month) and Enterprise plans. Radarkit does not offer white-label delivery at any tier. For agencies that need white-label reports, Writesonic GEO is the better fit.
- Neither tool offers crawler log access. Writesonic GEO includes technical audits for AI crawler accessibility on Basic and above.
- For Generative Engine Optimization (GEO) workflows that need API access on a budget plan, Radarkit wins. For GEO workflows that need broad engine coverage, content rewriting, and white-label on Growth, Writesonic GEO is the practical answer.
If you are weighing Radarkit against Writesonic GEO, you are really choosing between two different AI visibility tool comparison philosophies. Radarkit tracks 4 engines with API access on every paid tier from $29/month, focused on accessible brand monitoring and citation source identification. Writesonic GEO tracks 10+ engines (ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek, Microsoft Copilot, Meta AI, Google AI Mode, and Google AI Overviews), includes an Action Center with impact-ranked recommendations and content rewriting tools, and starts at $79/month with white-label delivery on Growth ($399/month). The right pick depends on whether API access on a budget plan or broader engine coverage with content rewriting and white-label delivery matters more to your workflow.
The tools at a glance
Radarkit
AI brand monitoring across ChatGPT, Claude, Gemini, and Perplexity with API access
Radarkit monitors brand mentions and citations across 4 AI engines: ChatGPT, Claude, Gemini, and Perplexity. The platform tracks how often your brand appears in AI-generated answers, which sources the AI models cite, and how your visibility compares to competitors over time. The 4-platform scope is the defining feature: teams that prioritise Claude and Gemini coverage alongside the two biggest first-party AI search engines often shortlist Radarkit.
Where Radarkit stands out is on price and API access. The Lite plan at $29/month is the lowest paid entry point in the AI visibility category for a tool that includes API access across all four paid tiers. The Growth tier at $79/month unlocks competitor benchmarking and citation source analysis, and the Pro tier at $139/month adds unlimited historical data. For developers and analysts building custom reporting stacks, this combination is the deciding factor in this AI visibility tool comparison.
The gaps to plan around are scope and delivery. Radarkit does not currently track Google AI Overviews or Google AI Mode, which matters for SEO teams whose audiences are asking questions in Google search. There is no white-label delivery or branded client view on any tier, so agencies delivering AI visibility reports to clients would need a separate reporting layer. For internal Generative Engine Optimization (GEO) tracking on a tight budget, Radarkit is a credible option.
| 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 | ✗ | ✗ | ✗ | ✗ |
Writesonic GEO
AI Search Growth Engine tracking brand visibility across 10+ AI platforms with content optimization
Writesonic GEO is the AI visibility and generative engine optimisation layer built into the Writesonic platform. It tracks how and where your brand is mentioned across 10+ AI search engines: ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek, Microsoft Copilot, Meta AI, Google AI Mode, and Google AI Overviews. The core pitch is that monitoring alone is not enough; you also need tools to act on what the data shows.
The Action Center is the most distinctive feature. Rather than presenting a dashboard and leaving you to interpret it, the Action Center analyses your visibility gaps, ranks optimisation opportunities by estimated impact, and surfaces specific actions: rewrite this piece of content, build a citation here, fix this technical issue. This is meaningful for teams who want GEO guidance without having to become experts in the field.
Writesonic already has a large user base for its AI content generation tools, and GEO sits on top of that infrastructure. Teams already using Writesonic for content production get AI visibility monitoring as an add-on to their existing workflow. White-label delivery is included on Growth ($399/month) and Enterprise plans, which makes it a credible fit for agencies delivering client-facing AI visibility reports on a managed-service model.
| Feature | Starter $79/mo | Basic $199/mo | Growth $399/mo | Enterprise Custom |
|---|---|---|---|---|
| AI platforms tracked | 10+ | 10+ | 10+ | 10+ |
| 7-day trend data | ✓ | ✓ | ✓ | ✓ |
| Action Center | ✓ | ✓ | ✓ | ✓ |
| Content rewriting tools | ✓ | ✓ | ✓ | ✓ |
| Citation management | ✗ | ✓ | ✓ | ✓ |
| Technical audits | ✗ | ✓ | ✓ | ✓ |
| White label | ✗ | ✗ | ✓ | ✓ |
| API access | ✗ | ✗ | ✗ | ✗ |
Head-to-head feature comparison
| Feature | Radarkit | Writesonic GEO |
|---|---|---|
| AI engines tracked | ChatGPT, Claude, Gemini, Perplexity | ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek, Copilot, Meta AI, Google AI Mode, Google AI Overviews |
| Competitive share-of-voice | Yes (Growth and up) | Yes |
| Prompt-level citation data | Yes | Yes |
| Answer / content gap analysis | No | Yes (Action Center impact-ranked recommendations) |
| Category intelligence | No | No |
| AEO content generation | No | Yes (content rewriting tools) |
| Crawler / AI bot log access | No | No |
| Page content audits | No | Yes (technical audits) |
| API access | Yes, all paid plans | No |
| Looker Studio / BI connector | No | No |
| White-label delivery | No | Yes (Growth and Enterprise) |
| Pay-per-prompt pricing | No | No |
| Agency multi-brand support | No | Yes (white-label + multi-client on Growth) |
| Starting price | $29/mo | $79/mo |
Want API access and white-label together that Radarkit and Writesonic GEO do not provide?
Radarkit has no white-label on any tier, and Writesonic GEO has no API on any plan. AI Peekaboo is the best AI visibility tool for agencies that need both read and write API and white-label delivery from $50/month, with 5 AI surfaces and Looker Studio connector included. For marketing teams that need to deliver branded client reports with programmatic data access, AI Peekaboo is the self-serve AEO alternative under $100/month.
Read the AI Peekaboo review →Which should you choose?
RadarkitWritesonic GEORadarkitWritesonic GEOWritesonic GEORadarkitWritesonic GEORadarkit and Writesonic GEO serve different audiences at different price points. Radarkit wins on API access at the entry tier and lowest price; Writesonic GEO wins on engine breadth, content rewriting, and white-label delivery on Growth. The trade-off is API access on a budget versus broad coverage plus agency-ready delivery.
Bottom line
Radarkit answers how a developer or analyst can pull AI visibility data into a custom reporting stack at $29/month with API access on every paid tier. Writesonic GEO answers how an in-house team or agency can monitor 10+ AI engines and act on recommendations with content rewriting and citation management in one platform. If API access on a budget plan is the deciding factor, Radarkit. If broader engine coverage plus content rewriting and white-label on Growth is the deciding factor, Writesonic GEO.
Frequently asked questions
How does Radarkit compare to Writesonic GEO on API access?
Radarkit includes API access on every paid tier from $29/month. Writesonic GEO does not offer API access on any tier. For teams that need programmatic data delivery on a standard plan, Radarkit is the only answer in this AI visibility tool comparison.
Which tool tracks more AI engines, Radarkit or Writesonic GEO?
Writesonic GEO tracks 10+ engines: ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek, Microsoft Copilot, Meta AI, Google AI Mode, and Google AI Overviews. Radarkit tracks 4: ChatGPT, Claude, Gemini, and Perplexity. Writesonic GEO wins on top-tier engine breadth.
Is Writesonic GEO worth the cost compared to Radarkit for agencies?
Writesonic GEO includes white-label delivery on Growth ($399/month) and above, which is meaningful for agencies delivering client-facing reports. Radarkit does not offer white-label at any tier. Writesonic GEO Starter at $79/month is also more expensive than Radarkit at $29/month but includes 10+ engines and content rewriting tools. For agencies that need white-label, Writesonic GEO is the better fit.
Which is best for Generative Engine Optimization (GEO) workflows, Radarkit or Writesonic GEO?
For GEO workflows that need API access on the cheapest plan, Radarkit is the right choice. For GEO workflows that prioritise broad engine coverage, impact-ranked recommendations, content rewriting tools, and white-label delivery on Growth, Writesonic GEO is the right choice. Neither tool offers crawler log access on standard plans.
How much does Radarkit cost compared to Writesonic GEO?
Radarkit Lite is $29/month with API access; Growth is $79/month adding competitor benchmarking and citation source analysis; Pro is $139/month with unlimited historical data; Enterprise is contact-based. Writesonic GEO Starter is $79/month with 10+ engines and Action Center; Basic is $199/month adding citation management and technical audits; Growth is $399/month adding white-label; Enterprise is custom. Radarkit is dramatically cheaper at entry; Writesonic GEO delivers broader coverage plus white-label on Growth.
Can I use Radarkit or Writesonic GEO for agency client reporting?
Only Writesonic GEO supports white-label delivery, available on Growth ($399/month) and Enterprise plans. Radarkit does not offer white-label at any tier. For agencies delivering client-facing AI visibility reports under their own brand, Writesonic GEO is the practical answer in this comparison.