Last updated 07-03-2026
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Whisper API
Whisper API is a hosted speech-to-text service built around OpenAI's Whisper Large V3 model. You send audio from podcasts, meetings, or videos and get text back through a REST endpoint that follows the same request format as OpenAI's transcription API. The product is operated by Lemonfox.ai, and the site states it is not affiliated with OpenAI.
Integration is meant to be quick. The API accepts uploaded files or remote audio URLs, can label multiple speakers in a recording, and supports transcription in more than 100 languages. English translations and text summaries are also available through related models on the platform.
Pricing runs on usage rather than fixed monthly tiers. New sign-ups get the first month free with 30 hours of transcription included, then pay $0.17 per hour of audio processed. The homepage includes curl examples showing how to pass language, speaker labels, and response format parameters.
Backend developers wiring transcription into apps are the main audience, along with teams processing recorded content at scale. If you are not building software, the site links to Transcripo for browser-based speech-to-text without writing code.
Whisper Large V3 transcribes podcasts, meetings, and video audio on the latest model in the stack
OpenAI-compatible endpoint so existing Whisper client code needs only small changes
Speaker diarization tags who said what when multiple voices share a recording
More than 100 languages supported on the same transcription request
First month includes 30 free hours before the $0.17-per-hour rate applies
OpenAI-compatible API endpoint fits into existing Whisper integrations with minimal code changes.
At $0.17 per hour, pricing sits on the lower end for hosted transcription APIs.
The first month includes 30 free hours, giving teams room to test before usage charges start.
Speaker diarization and 100+ language support ship on the same transcription endpoint.
Billing and account management run through lemonfox.ai rather than whisperapi.com directly.
The site explicitly states it is not affiliated with OpenAI, which may matter for procurement teams.
Pricing is usage-only with no published subscription tiers for predictable monthly budgets.
Does Whisper API offer a free trial?
Yes. Whisper API includes the first month free with 30 hours of audio transcription. After that, usage is billed at $0.17 per hour of audio processed.
Is Whisper API affiliated with OpenAI?
No. Whisper API states on its website that WhisperAPI.com is not affiliated with OpenAI. The service is powered by Lemonfox.ai and uses the Whisper speech recognition model.
What speech recognition model does Whisper API use?
Whisper API uses Whisper Large V3, which the site describes as the latest speech recognition model in its stack for transcribing podcasts, videos, meetings, and other audio sources.
Can Whisper API identify different speakers in a recording?
Yes. Whisper API supports speaker diarization through a speaker_labels parameter on the transcription endpoint, so multiple speakers in an audio file can be separated in the output.
How much does Whisper API cost after the free trial?
After the first-month trial with 30 included hours, Whisper API charges $0.17 per hour of audio transcribed on a pay-as-you-go basis.
What programming languages work with Whisper API?
Whisper API is language-agnostic because it exposes an OpenAI-compatible REST endpoint. The site says any programming language or application stack can call the API, with documentation and code examples at lemonfox.ai.