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May 22, 2026
SDK

TypeScript SDK

Added bypassRowLimit option for batch evaluator.

Python SDK

First release.
May 7, 2026
PurposeSDK

Purpose Evaluator

Released the Purpose Evaluator, which analyzes how clearly a text communicates its central purpose.

TypeScript SDK

Added Purpose evaluator support.
March 20, 2026
ConventionalitySDK

Conventionality Evaluator

Released the Conventionality Evaluator, which analyzes whether language is literal and explicit or relies on figurative, abstract, or implied meaning that requires interpretation.

TypeScript SDK

Added Subject Matter Knowledge and Conventionality evaluator support.
March 13, 2026
SDKSubject Matter KnowledgePlayground

TypeScript SDK

Released a TypeScript SDK for Grade Level Appropriateness, Vocabulary, and Sentence Structure evaluators.

Subject Matter Knowledge Evaluator

Released the Subject Matter Knowledge qualitative text complexity evaluator, which identifies key concepts in a text and evaluates background knowledge demands by grade level.

Playground

Introduced the Playground, an interactive environment for testing evaluators without setup or integration. Paste text, select a grade, and view results.
Feb 19, 2026
Vocabulary

Vocabulary Evaluator

Expanded grade support to include grades 5–12.
Feb 18, 2026
Sentence Structure

Sentence Structure Evaluator

Expanded grade support to include grades 5–12.
Sept 23, 2025
Grade Level AppropriatenessVocabularySentence Structure

Grade Level Appropriateness Evaluator

Released the Grade Level Appropriateness Evaluator.

Vocabulary Evaluator

Released the Vocabulary Evaluator with support for grades 3–4.

Sentence Structure Evaluator

Released the Sentence Structure Evaluator with support for grades 3–4.