Botoi Readability API
Botoi Readability API: A focused readability API with three scoring formulas and 150+ endpoints. Ranked #20 of 25 in Readability Checkers by our editors (6.4/10); pricing: Free plan; best for developers needing a simple readability API.
At a glance
- Editor score6.4 / 10
- PricingFree plan
- Best forDevelopers needing a simple readability API
- Free planYes
- Paid from$9/mo
- Readability formulas3 formulas
- Facts checked20 Sep 2026
Where it wins
- Three readability formulas plus sentence and word analysis
- Free plan includes all 150+ endpoints and JSON responses
- Paid plans add support, dashboards, webhooks, and an uptime SLA
Where it doesn't
- Meaningful grade mapping is calibrated for English
- Free usage is rate-limited
- API-only delivery requires workflow integration
Our verdict on Botoi Readability API
Botoi Readability API analyzes English text through a POST JSON endpoint and returns Flesch-Kincaid Grade, Flesch Reading Ease, and Gunning Fog scores. It also provides sentence, word, syllable, and complex-word counts, giving developers a focused way to add readability checks to CMS workflows, publishing systems, legal or medical drafting tools, and content analysis pipelines. Optional authentication and JSON responses support application-based integrations, while MCP server access is available across the published plans.
Pricing follows a freemium model. The Free plan costs $0 per month and includes all 150+ endpoints, MCP server access, JSON responses, and community support, with free usage subject to rate limits. Starter costs $9 per month and adds email support and a usage dashboard. Pro costs $49 per month and adds priority support, webhook notifications, and a 99.9% uptime SLA. Business costs $199 per month and includes dedicated support, webhook notifications, a usage dashboard, and the same 99.9% uptime SLA. All paid plans retain access to the 150+ endpoints and MCP server.
The product’s strength is its narrow, developer-oriented focus: teams can retrieve standardized readability scores and supporting counts in structured JSON rather than relying on a separate editorial interface. That makes it suitable for automated checks inside existing software, especially when English content is the target. Its scope is less suited to multilingual workflows, since the grade mapping is calibrated for English, and it does not provide AI features. Choose Botoi when an API-first readability layer and predictable plan progression are the priority; consider a broader tool when users need a wider language range or capabilities beyond readability analysis.
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Botoi Readability API pricing
All 4 Botoi Readability API plans and prices →
Botoi Readability API fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $9/mo |
| Readability formulas | 3 formulas |
| Sentence analysis | Yes |
| Clarity recommendations | Not verified |
| Browser extension | Not verified |
| API access | Yes |
| Language support | English |
| Deployment | Cloud |
| Compliance & security | GDPR |
| Support | Email, Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | botoi.com |
| Facts checked | 20 Sep 2026 |
Alternatives to Botoi Readability API
- Eclipse Readability StudioA free, open-source desktop checker for detailed multilingual document analysis.9.4
- ReadableA deep web and document readability checker for professional content teams.9.2
- Check ReadabilityA free browser checker combining nine formulas with practical clarity guidance.9.0
See all Botoi Readability API alternatives →
Also Ranked In
Botoi Readability API is ranked in 2 of our directories.
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Featured on iTechGuides
Botoi Readability API is listed in our Readability Checkers directory. Add the badge to your site — it links back to this page.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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