Botoi Readability API vs Oanor Readability API
Botoi Readability API
botoi.comOanor Readability API
oanor.comSide by side
| Figure | Botoi Readability API | Oanor Readability API |
|---|---|---|
| Price from | $9/mo | €6.80/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| API | Yes | Yes |
| Plans published | 4 | 4 |
| Spec score · AI Readability Checkers | 8.1 (#8) | 7.8 (#15) |
| Integration | The product page provides cURL, JavaScript, TypeScript, Python, and Go examples. | The page provides curl, JavaScript, PHP and Python request examples; clients authenticate with an x-oanor-key header. |
| Purpose | The Readability API analyzes English text and returns Flesch-Kincaid Grade, Flesch Reading Ease, Gunning Fog, and underlying counts. | The API scores text with six readability formulas: Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau and Automated Readability Index. |
| Use cases | Botoi suggests using the API to enforce plain-language standards, review legal and medical drafts, optimize blog posts for SEO, and compare writing across authors. | The API is described for content and copywriting tools, SEO and editorial workflows, education, accessibility checks and UX-writing review. |
Plans
Botoi Readability API
- FreeFree
- Starter$9 a month
- Pro$49 a month
- Business$199 a month
Oanor Readability API
- FreeFree
- Starter€6.80 a month
- Pro€21.50 a month
- Mega€56.80 a month
In their own words
Botoi Readability API
Botoi Readability API analyzes English text and returns Flesch-Kincaid Grade, Flesch Reading Ease, Gunning Fog, and underlying counts. A request sends a required text string to POST /v1/text/readability and receives JSON. Flesch Reading Ease scores run from 0 to 100, with higher values indicating easier reading; Gunning Fog estimates the years of formal education needed. The formulas and syllable heuristics are calibrated for English, so grade mapping is not meaningful for other languages. Botoi recommends sending at least 100 words because short samples can produce unstable scores. Suggested uses include enforcing plain-language standards, reviewing legal or medical drafts, refining blog posts for SEO, and comparing writing across authors. Examples are provided in cURL, JavaScript, TypeScript, Python, and Go. The Free plan is free and lists 1,000 requests per day and 10 per minute; the endpoint page separately states five requests per minute for its free tier. Starter costs $9 a month. Requests above a per-minute or daily cap receive HTTP 429, and daily limits reset at midnight UTC.
Oanor Readability API
Oanor Readability API has no write-up on Specifiction yet; its figures are above.