Deepgram Nova-2 is the best overall transcription API for voice dictation - it's the fastest (under 300ms latency), most accurate for accented speech, and cheapest at $0.0043/minute. OpenAI Whisper is best for multilingual use and the largest model ecosystem. ElevenLabs Scribe excels at speaker diarization. Here's our full comparison after extensive testing with Parrot across all three providers.
OpenAI Whisper
Whisper is the default choice for most users. It's the most well-known, has solid accuracy across accents and speaking styles, and the pricing is straightforward.
- Accuracy: Very good for general dictation. Handles technical terms reasonably well. Occasional issues with uncommon proper nouns (fixable with custom vocabulary).
- Speed: Moderate. Typical response time is 1–3 seconds for a 15-second clip. Not the fastest, but consistent.
- Pricing: $0.006 per minute of audio. A 10-minute dictation session costs about $0.06. Extremely affordable for individual use.
- Best for: General-purpose dictation, users who already have an OpenAI API key.
Deepgram
Deepgram is optimized for speed. If you care about getting your transcription back as fast as possible, Deepgram is the provider to pick.
- Accuracy: Comparable to Whisper for most content. Slightly better with conversational speech and filler words. Slightly worse with heavily technical content.
- Speed: Fast. Noticeably quicker than Whisper - often under 1 second for short clips. They also offer a streaming mode for real-time transcription.
- Pricing: Pay-as-you-go starting at $0.0043 per minute. Slightly cheaper than Whisper.
- Best for: Users who want the fastest turnaround, high-volume dictation.
ElevenLabs
ElevenLabs is primarily known for text-to-speech, but their speech-to-text offering has gotten surprisingly good. It's the newest option in Parrot.
- Accuracy: Strong, especially for clear speech. Their model handles punctuation particularly well - fewer corrections needed in the AI cleanup step.
- Speed: Good. Between Whisper and Deepgram in our tests.
- Pricing: Included in ElevenLabs plans. If you already pay for ElevenLabs (for TTS or other features), adding transcription is effectively free.
- Best for: Users already in the ElevenLabs ecosystem, content creators who use both TTS and STT.
Head-to-head comparison
We ran the same 50 audio samples through all three providers. The samples included professional dictation (emails, medical notes, legal text), casual speech, and technical content with jargon.
- Overall accuracy: Whisper and ElevenLabs tied at ~96%, Deepgram at ~95%. The differences are marginal.
- Speed: Deepgram was 40% faster on average. ElevenLabs second, Whisper third.
- Punctuation: ElevenLabs produced the most naturally punctuated output. Whisper was good. Deepgram occasionally missed commas.
- Proper nouns: All three struggled equally. This is where custom vocabulary matters most.
Our recommendation (if you need an API)
If you're building a product that must call a cloud transcription API: start with Whisper for accuracy and ecosystem, switch to Deepgram when latency dominates, and use ElevenLabs if you're already on that stack. Try one for a week on real audio before you lock in pricing.
How this relates to Parrot
Parrot is a different path: local dictation on your Mac. Transcription and cleanup run on-device — no API keys, no per-minute bills, no audio upload. Free for life. See our local setup guide.
Use this API comparison when you're evaluating cloud vendors. Use Parrot when you just want to speak and have text appear at your cursor without standing up infrastructure.