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Free English Pronunciation Checker

Lucy OS1 is the world's first human-like superintelligence that sees, hears, and speaks with you, living in your browser and Mac.

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“Lucy OS1 corrected my pronunciation in ways no textbook ever could”

Free English Pronunciation Checker

Say a phrase out loud and see how closely your pronunciation matches. Works in Chrome and Edge. Uses your browser microphone and the Web Speech API. No audio is sent to any server.

Choose a phrase to practice:

Why pronunciation practice matters

Clear pronunciation is the difference between being understood and being misunderstood in real conversations. Many language learners have strong grammar and vocabulary but are held back by pronunciation patterns carried over from their native language.

Lucy OS1 gives you real-time feedback on your spoken English in natural conversation. Rather than practicing isolated words out of context, you practice pronunciation while saying things you actually want to say, which makes corrections stick faster.

Common questions about pronunciation

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Lucy OS1 adapts to your language level and speaks with you every day. Real-time voice conversations build the fluency that reading and grammar study alone cannot.

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