BestAIStack
Whisper (OpenAI) logo

Whisper (OpenAI)

Open-source automatic speech recognition system

Best for

Developers building transcription into apps, Users with technical skills wanting free local transcription, High-volume users needing cheapest per-minute pricing, Multilingual projects needing 99+ languages

Key strength

Extremely cheap — $0.003-0.006/min via API

Try now →

Affiliate disclosure: Some links below may earn us a commission at no cost to you.

Whisper (OpenAI) website screenshot

What is Whisper (OpenAI)?


Whisper is OpenAI's open-source automatic speech recognition (ASR) model that transcribes speech to text in 99+ languages, supporting translation to English, word-level timestamps, and speaker diarization — available via OpenAI API, local installation, or third-party integrations. ---

Key Features


Multilingual Transcription

99+ languages supported

Translation to English

Translate non-English audio to English text

Word-Level Timestamps

Precise timing for each word (legacy Whisper)

Speaker Diarization

GPT-4o Transcribe Diarize identifies speakers

Pros & Cons


What works

  • Extremely cheap — $0.003-0.006/min via API
  • 99+ languages with automatic detection
  • Free open-source option for local deployment
  • Speaker diarization at no extra cost (GPT-4o)

Watch out for

  • Requires technical knowledge for local deployment
  • Local deployment needs GPU for real-time processing
  • No built-in UI — must build or use third-party tools
  • 25MB file size limit per API request

Who is it for?


great

Developers building transcription into apps

Developers building transcription into apps

great

Users with technical skills wanting free local transcription

Users with technical skills wanting free local transcription

great

High-volume users needing cheapest per-minute pricing

High-volume users needing cheapest per-minute pricing

great

Multilingual projects needing 99+ languages

Multilingual projects needing 99+ languages

Alternatives to Whisper (OpenAI)


Turn video and audio into transcripts, summaries, and reusable content.

Freemium · $15/mo

AI meeting assistant and conversation intelligence platform

Freemium · $10/mo

Video editing, powered by text

Freemium · $16/mo