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Tokenize, tag, and analyze natural language text using Apple's NaturalLanguage framework and translate between languages with the Translation framework.
Passed 22 of 23 test cases with the skill, and 19 of 23 without it.
and 2 more in the full report
4 fixed18 passed either way0 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
How can I tokenize a string into word components in Swift and inspect attributes during iteration to filter out numeric tokens?
| Checked | Without skill | With skill |
|---|---|---|
| Initializes NLTokenizer with unit word. | Missed | Passed |
| Checks attributes.contains(.numeric) inside enumerateTokens. | Missed | Passed |
The instructions your model reads when the skill loads.
Analyze natural language text for tokenization, part-of-speech tagging, named entity recognition, sentiment analysis, language identification, and word/sentence embeddings. Translate text between languages with the Translation framework.
This skill covers two related frameworks: NaturalLanguage (
NLTokenizer,NLTagger,NLEmbedding) for on-device text analysis, and Translation (TranslationSession,LanguageAvailability) for language translation.
Scope boundary: Use this skill after you already have text. It owns
tokenization, language identification, POS/NER tagging, sentiment, embeddings,
custom NLModel classifiers/taggers, and in-app translation. Hand off OCR to
vision-framework, speech-to-text to speech-recognition, UI strings and
locale formatting to ios-localization, and generative summarization or Apple
Intelligence workflows to apple-on-device-ai.
Import NaturalLanguage for text analysis and Translation for language
translation. No special entitlements or capabilities are required for
NaturalLanguage. Translation has split availability: system translation
presentation is iOS 17.4+ / macOS 14.4+, while TranslationSession,
.translationTask(), LanguageAvailability, and batch translation require
iOS 18+ / macOS 15+.
Direct TranslationSession(installedSource:target:) is the non-UI option, but
only when the source and target languages are already installed on device.
test cases passed, vs 19 / 23 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.