OpenAI Whisper
Whisper is OpenAI's open-source, MIT-licensed speech-to-text model trained on 680,000 hours of audio -- you can download it and run transcription fully offline and free on your own hardware. It supports ~99 languages plus translation to English and is remarkably robust to accents and noise. If you don't want to run GPUs, OpenAI's hosted transcription API runs Whisper (and newer gpt-4o-transcribe models) at roughly $0.006/min. It has no built-in speaker diarization and the core repo updates infrequently, but the surrounding ecosystem (whisper.cpp, faster-whisper, WhisperX) is enormous.
Krisp
Krisp is best known for AI noise cancellation that strips background sound from any call in real time, and has expanded into an AI meeting assistant with transcription, notes, and summaries. It works as a desktop app that sits between your mic and any conferencing tool, plus an embeddable Voice SDK for developers building voice products. Consumer plans run around $8-15/mo (billed annually); the old perpetual free tier appears to have narrowed to a trial, and Voice SDK pricing is contact-sales. Its noise-cancellation quality is its real moat -- it's a meeting and utility app, not a transcription API like AssemblyAI or Deepgram.
OpenAI Whisper edges Krisp on aggregate — 88 vs 73.
The default open-source speech-to-text -- free and offline if you self-host, or ~$0.006/min via OpenAI's API when you don't want to run GPUs. Krisp still wins for buyers who prioritise best-in-class real-time ai noise cancellation. Both tools are independently scored — the right pick depends on which dimensions matter most for your workflow.
Side-by-side, every cell sourced.
Pricing pulled from each tool's public site. Scores follow the BigBang Score rubric — pricing transparency, free tier, API support, update frequency, unique factor, documentation, and community.
Use-case picks.
Cut through the spec sheet. Here's what we'd recommend depending on what matters most.
Pick OpenAI Whisper if…
You prioritise free and mit-licensed and runs fully offline and locally.
Pick Krisp if…
You prioritise best-in-class real-time ai noise cancellation and works with any conferencing app at the mic level.
Editorial pick
OpenAI Whisper wins our composite score (88/100). It edges ahead on aggregate — but the right tool depends on which dimensions matter most.
Related head-to-heads in AI audio.
OpenAI Whisper vs ElevenLabs — AI audio
BigBang Scores 88/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
OpenAI Whisper vs AssemblyAI — AI audio
BigBang Scores 88/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
OpenAI Whisper vs Cartesia — AI audio
BigBang Scores 88/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
OpenAI Whisper vs Krisp - frequently asked.
Direct answers tuned for AI search engines (ChatGPT, Perplexity, Claude) and Google's People Also Ask.
The short answer.
OpenAI Whisper wins on aggregate, but Krisp pulls ahead on specific axes - the spec sheet above shows where each one earns its keep.