Lemonfox

Lemonfox is an AI transcriber tool. Lemonfox provides low-cost speech-to-text and text-to-speech APIs for developers, using Whisper large-v3 for transcription in over 100 languages with speaker diarization and optional translation. Pricing starts at $5 per month for 10 million credits, with a free trial.

Lemonfox is a developer-focused API platform offering speech-to-text and text-to-speech services at low cost. The speech-to-text API transcribes audio files in seconds and is powered by Whisper large-v3, the latest and most precise speech recognition model from OpenAI. It supports over 100 languages, can optionally translate during transcription, and includes speaker diarization to identify different speakers in a recording. The text-to-speech API is a newer addition positioned as an ElevenLabs alternative, generating natural-sounding audio from text. Pricing is straightforward: $5 per month buys 10 million credits, which covers roughly 30 hours of speech-to-text or 2 million characters of text-to-speech. Additional credits cost $0.50 per million. A one-month free trial is available, and the company reports usage by more than 10,000 developers. The service is clearly aimed at software developers and technical teams who need to add transcription or voice generation to their applications without building or maintaining models themselves. Because it is an API-first product, there is no graphical interface for uploading files or editing transcripts; users interact through HTTP requests and parse JSON responses. This makes Lemonfox a good fit for backend services, call analytics pipelines, podcast processing, and voice assistants. For non-developers, Lemonfox points to a separate tool called Transcripo for converting speech to text, which suggests the core platform is not intended for direct consumer use. In practice, getting started involves signing up for an account, obtaining an API key, and sending audio files to the transcription endpoint. The API returns transcripts quickly, with options for translation and speaker labels. Security and privacy are emphasized: all data is deleted immediately after processing, and EU-based processing is available for teams with data residency requirements. The text-to-speech endpoint works similarly, accepting text and returning audio. Among alternatives, Lemonfox competes with other Whisper-based API providers and larger cloud vendors. Its main differentiators are price, the inclusion of speaker diarization, and the option for EU processing. The trade-off is a narrower feature set and less ecosystem tooling than established players. Teams that need a simple, low-cost transcription API with good language coverage will find it a practical choice; those needing extensive customization or on-premise deployment may need to look elsewhere.