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Sørensen-Dice Bigram Similarity
x402
Sørensen-Dice Bigram Similarity is a paid API for AI agents from similarity.openverbs.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Computes the Sørensen-Dice similarity coefficient (0–1) between two strings using character bigrams, robust to word-order variation and minor edits.
Price / call$0.004
Success—
StatusUnknown
How this service works
Sørensen-Dice similarity coefficient in [0,1] over character bigrams — robust to word order and minor edits.
Output
A floating-point Dice coefficient in the range [0, 1], where 0 means no shared bigrams and 1 means the two strings are identical in bigram composition. The score is symmetric and tolerant of word-order differences.
Example use cases
Deduplication of product catalog entries
“I have two product names — 'Samsung Galaxy S23 Ultra 256GB' and 'Galaxy S23 Ultra Samsung 256GB' — can you give me their Dice similarity score so I can decide whether to merge them in my catalog?”
Plagiarism screening for submitted essays
“Score the Dice bigram similarity between these two essay paragraphs for me: 'The quick brown fox jumps over the lazy dog' and 'The lazy dog was jumped over by a quick brown fox' — I need a 0-to-1 number.”
Fuzzy address matching for record linkage
“How similar are '123 Main Street Apt 4B' and '123 Main St, #4B' using Dice bigram similarity? I'm trying to link records across two databases.”
Technical details
Endpoint
POSThttps://similarity.openverbs.com/v1/diceWhen to prefer
Choose this endpoint when you need a similarity score that is robust to word-order permutations and minor character-level edits, and when an intuitive 0–1 score (rather than a raw edit distance) is required. Prefer it over Levenshtein when word order may vary (e.g. name fields), and over Jaccard when you want bigram-level granularity rather than token-level. Use Jaro-Winkler instead if prefix matching matters most (e.g. autocomplete).
Side effects
- Missing required fields 'a' or 'b' returns a validation error
- Strings exceeding 20,000 characters are rejected
- Empty string inputs may produce a score of 0 or cause an error
- Network/payment failure if x402 payment is not properly handled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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