Readability scores
readability.openverbs.com
Compute the standard English readability formulas — Flesch Reading Ease, Flesch–Kincaid grade, Gunning fog, SMOG, Coleman–Liau and ARI — along with the underlying sentence/word/syllable statistics. Empty text is a clean 400.
- Category
- Service
- Networks
- Base
- Starting price
- $0.002
- Paid calls, 30 days
- 8
Paid endpoints
4 endpoints, sorted by usage. Prices are per request.
| Endpoint | Price | Network | Facilitator | Calls / 30d |
|---|---|---|---|---|
POST/v1/grade Summarise a text's difficulty as a single consensus US grade level (averaging the five grade formulas), plus the Flesch Reading Ease, a plain-language difficulty band and an approximate age range. | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/reading-time Estimate reading and speaking time for a text at configurable words-per-minute rates (defaults: 200 wpm reading, 130 wpm speaking). | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/score Compute the standard English readability formulas — Flesch Reading Ease, Flesch–Kincaid grade, Gunning fog, SMOG, Coleman–Liau and ARI — along with the underlying sentence/word/syllable statistics. Empty text is a clean 400. | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/syllables Count syllables per word and in total across the text. | $0.002 | Base | Coinbase CDP | 2 |
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