OpenSpeaker Voice Changer review
A low-cost voice-conversion API with long uploads, controls, and consent-based cloning.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OpenSpeaker Voice Changer is a web-based speech-to-speech tool for creators, developers, and teams that need to transform recorded speech into a selected voice. It accepts MP3, M4A, and WAV uploads up to five hours per file, while retaining the original performance and pacing. Users can select a target voice and adjust stability, similarity, style, speaker boost, noise removal, and transcript handling. A separate workflow supports creating reusable voices from consented reference recordings.
Pricing is structured around a $5 charge per 1,000,000-credit package. The published plans show 1-month, 3-month, and 9-month options with a shared premium-credit balance and API access included. A no-expiry option adds no-expiry credits while retaining the shared balance and API access. According to the vendor's pricing page, the flat $5 package price applies through 30 September 2026. OpenSpeaker does not provide a free plan, so it suits buyers prepared to purchase credits before evaluating the workflow. The package-based model is particularly relevant for API projects that need a stated entry price rather than a recurring subscription structure.
The main differentiator is its developer workflow: asynchronous API tasks can be handled through polling or webhooks, alongside the web interface. The conversion process uses ElevenLabs speech-to-speech models, and the product includes noise removal, speaker boost, and several voice-character controls. MP3 export keeps delivery straightforward, although buyers needing other export formats should look elsewhere. OpenSpeaker is a good fit for low-cost API voice conversion, long recorded inputs, and consent-based voice workflows; it is less suitable for teams requiring a free plan or broader export-format support.
OpenSpeaker Voice Changer pros and cons
- Where it wins
- Converts speech while preserving the original performance and pacing
- Accepts MP3, M4A, and WAV files up to five hours
- Asynchronous API tasks support polling or webhooks
- Where it doesn't
- No free plan is available
- Export is limited to MP3
- The $5 package price applies through 30 September 2026
OpenSpeaker Voice Changer fact sheet, pricing and score →
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