Education

Speechace

AI speech assessment platform for pronunciation and fluency evaluation

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Pronunciation Assessment Language Learning Speech Recognition Fluency Scoring Speaking Tests Educational Technology Speech API AI Assessment
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About Speechace

Speechace is pronunciation-assessment AI for language learning: it listens to a learner speak and scores pronunciation, fluency, rhythm and intonation — down to the individual phoneme — telling them exactly which sounds to fix.

Where general speech recognition asks "what did they say?", Speechace asks "how well did they say it?" Its API returns detailed scoring against native-speaker models, highlighting the specific sounds a learner missed, and aligns with recognized proficiency frameworks (CEFR, IELTS/TOEFL-style speaking measures) so scores mean something educationally. Language-learning apps, schools and test-prep platforms embed it to give instant, objective speaking feedback at a scale human teachers can't.

Pricing is API/usage-based for developers and institutions, with trials available.

Strengths: phoneme-level diagnostic feedback (the pedagogically useful kind), alignment with standardized frameworks, and support for learners across many first languages. Weaknesses: it's infrastructure, not a consumer app — learners meet it inside other products; and automated scoring, however good, doesn't replace a teacher's judgment on communication and context.

Who it's for: EdTech developers, language schools and test-prep companies adding automated speaking practice — plus researchers in language acquisition.

Frequently Asked Questions

What is Speechace and how does it differ from traditional speech-to-text systems?
Most standard speech recognition providers focus entirely on transcribing what a user is saying. Speechace is a specialized, patented B2B speech assessment API explicitly engineered to evaluate how well a user is speaking. Built primarily for edtech publishers, universities, and corporate recruitment platforms, it analyzes audio files to pinpoint precise structural errors down to the individual syllable and phoneme levels while providing predictive scores matching standardized language exams.
What specific language proficiency frameworks and scoring rubrics does the API align with?
Speechace natively maps its grading metrics to major global language standards and high-stakes testing frameworks. The automated engine evaluates speaking samples and delivers immediate score estimates aligned directly with the Common European Framework of Reference for Languages, IELTS, PTE, TOEFL, and TOEIC. The system operates on a 0 to 100 internal scoring rubric, providing localized granularity for specific regional dialects across English, French, and Spanish.
What are the structural differences between the Basic, Pro, and Premium API tiers?
The capabilities scale logically based on the type of speaking activity being processed: Basic (Pronunciation API): Tailored for short, structured word or sentence repetition exercises, returning distinct quality scores for syllables and phonemes with a maximum 15-second audio limit. Pro (Fluency API): Adds lexical stress, intonation, pausing rates, length of run, and words-correct-per-minute metrics for long-form passage read-aloud activities up to 45 seconds. Premium (Spontaneous Speech API): Built for open-ended, free-speaking prompts up to 2 minutes long, evaluating natural vocabulary usage, grammar, coherence, task achievement, and contextual relevance.
How easily can a developer integrate Speechace into an existing LMS or learning platform?
The technology operates as a lightweight, developer-focused REST API that processes standard web audio formats like WAV, MP3, M4A, and WebM via direct HTTP requests. To accelerate deployment, Speechace provides public repositories containing ready-made HTML5 audio recording modules compatible with mobile iOS and Android browsers. Most development teams can safely configure, test, and deploy a fully automated speaking practice activity within a single week.
What does Speechace measure?
Pronunciation accuracy at phoneme level, plus fluency, rhythm and intonation — with specific feedback on which sounds need work.
Is Speechace a consumer app?
No — it's an API that language-learning products embed. Learners experience it inside those apps.
Does it align with IELTS or CEFR?
Yes — scoring maps to recognized proficiency frameworks, which is why test-prep platforms use it.
Which languages are supported?
English is the primary focus, with additional languages available — check current coverage for your use case.
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