Whisper AI
OpenAI's open-source automatic speech recognition (ASR) system capable of transcribing and translating audio across 99 languages with high accuracy.
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✓ Free plan available
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⚡ At a glance
Best for: Developers and researchers needing reliable multilingual transcription or speech-to-text integration
✓ Genuinely strong multilingual accuracy, especially for major languages
✗ No real-time / streaming transcription support — processes audio in chunks, making live captioning impractical
An honest editorial snapshot from this tool's profile — not a paid placement.
Whisper is a general-purpose speech recognition model trained on 680,000 hours of multilingual and multitask supervised data from the web. It performs robust transcription, language identification, and translation to English across a wide range of accents, background noise, and technical vocabulary. The model is freely available on GitHub for self-hosting, and is also accessible via OpenAI's API for developers who prefer a managed solution.
Best for: Developers and researchers needing reliable multilingual transcription or speech-to-text integration
Key Features
- Transcription in 99 languages
- English translation from 99 source languages
- Multiple model sizes (tiny, base, small, medium, large, turbo)
- Timestamp-level word alignment
- Noise-robust transcription
- Open-source model weights available on GitHub
- OpenAI API access (whisper-1 model)
How to use Whisper AI
Pros
- Genuinely strong multilingual accuracy, especially for major languages
- Open-source weights allow full local/offline deployment at no cost
- Handles accents, technical jargon, and noisy audio better than many competitors
- Multiple model size options let users trade speed for accuracy
Cons
- No real-time / streaming transcription support — processes audio in chunks, making live captioning impractical
- Accuracy drops noticeably for low-resource languages despite 99-language claim
- Self-hosting large models (large-v3, turbo) requires significant GPU VRAM (≥8 GB), limiting local use on consumer hardware
- API pricing ($0.006/min) adds up quickly at scale compared to specialized ASR providers like Deepgram or AssemblyAI
- No built-in speaker diarization — identifying who said what requires additional third-party tooling
Pricing Details
| Pricing type | Freemium |
| Starting at | Free (self-hosted) or $0.006/min via API |
| Free plan | ✅ Available |
Whisper AI Pricing
Whisper AI pricing — 3 plans: Open Source (Self-Hosted) (Free (open source model weights and code)) · OpenAI API - Transcription (From $0.003/minute (gpt-4o-mini-transcribe) to $0.006/minute (gpt-4o-transcribe)) · Realtime Speech-to-Text API ($0.017/minute (gpt-realtime-whisper)). Compare monthly and yearly costs below.
Open Source (Self-Hosted)
Free (open source model weights and code)
Free (open source model weights and code)
- ✓ Trained on 680,000 hours of multilingual & multitask supervised web data
- ✓ Runs locally on your own hardware/GPU - no per-minute API fees
- ✓ Supports transcription in many languages plus speech translation to English
- ✓ Multiple model sizes available (tiny to large) for accuracy/speed tradeoffs
- ✓ Open-sourced model card and inference code available on GitHub
OpenAI API - Transcription
From $0.003/minute (gpt-4o-mini-transcribe) to $0.006/minute (gpt-4o-transcribe)
From $0.003/minute (gpt-4o-mini-transcribe) to $0.006/minute (gpt-4o-transcribe)
- ✓ Hosted transcription API - no need to manage your own infrastructure
- ✓ gpt-4o-mini-transcribe: lower cost, faster, good for high-volume use
- ✓ gpt-4o-transcribe: higher accuracy successor to the original Whisper API
- ✓ Pay-as-you-go billing based on usage, no monthly commitment
- ✓ Easy integration via OpenAI API with standard authentication
Realtime Speech-to-Text API
$0.017/minute (gpt-realtime-whisper)
$0.017/minute (gpt-realtime-whisper)
- ✓ Realtime/streaming transcription for live voice applications
- ✓ Low-latency speech recognition suitable for voice agents
- ✓ Part of OpenAI's Realtime API family of audio models
- ✓ Pay-as-you-go billing based on audio minutes processed
- ✓ Can be combined with other Realtime models for voice agent pipelines
See Current Pricing →
Pricing may change — always verify on the official site.
- Transcribing recorded interviews, podcasts, or meetings
- Building multilingual subtitle and caption pipelines
- Academic research requiring offline, reproducible ASR
- Translating foreign-language audio to English text
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| Rating | ★★★★☆ 4.2 | ★★★★½ 4.3 | ★★★★☆ 4.2 | ★★★★☆ 4.1 |
| Trust Score | 84/100 | 86/100 | 84/100 | 82/100 |
| Pricing |
Open Source (Self-Hosted)
Free
OpenAI API - Transcription
From $0.003/minute…
Realtime Speech-to-Text API
$0.017/minute |
Free
$0
Pay as you go
From $0.15/hour to…
Enterprise / Custom
Custom |
Free
$0/mo
Essentials
$25.49
Pro
$47.99
Unlimited
Custom |
Pro
$100
Team
$90
Business
Custom |
| Data updated | 1 month ago | 1 month ago | 1 month ago | 1 month ago |
| Try → | Compare → | Compare → | Compare → |
About Trust Score
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