AssemblyAI vs Superwhisper
AssemblyAI and Superwhisper are both audio AI tools, tracked here on price, platforms, integrations, and capabilities. Every figure below is read from the vendor's own pages and dated. No score and no winner: the facts do the picking.
AssemblyAI
Voice AI infrastructure for builders
AssemblyAI delivers production-ready Voice AI models, including pre-recorded and real-time streaming speech-to-text, speaker diarization, and voice agent APIs. It provides advanced models like Universal-3.5 Pro, supporting multiple languages and specialized medical transcription modes.
Superwhisper
Voice to text dictation software powered by local and cloud AI
Superwhisper is a desktop voice dictation application that converts speech into text across macOS and iOS. It runs models locally on Apple Silicon hardware or via cloud APIs for real-time transcription.
At a glance
Capability tags are factual labels we assign when a tool is added; they describe what a tool does, not how well it does it.
Checked against the vendors. Written from each vendor's own site and last re-checked there: AssemblyAI (under review since September 7, 2026) · Superwhisper (not yet re-checked). Vendors change pricing and features without notice, so confirm anything that decides your purchase on the vendor's page.
Also in audio
A tool we have an affiliate relationship with. It is not part of the comparison above and we are not calling it the better pick.
- Repurposing podcast and video recordings into social posts, newsletters, and blogs
- Content teams and agencies managing multi-brand client media pipelines
- Transcribing and summarizing meetings, webinars, and sales calls
Key features
AssemblyAI
- Pre-recorded and real-time streaming speech-to-text transcription
- Speaker diarization to segment utterances by speaker
- LLM-powered Speech Understanding and LLM Gateway
- Custom keyterms prompting and Medical Mode for specialized terminology
Superwhisper
- Real-time voice dictation into any application
- Local model processing using Apple Silicon Neural Engine
- Cloud transcription support through advanced speech models
- Custom vocabulary and prompt formatting support
What each one does well
AssemblyAI
- ✓ Building real-time voice agents
- ✓ Transcribing pre-recorded audio files with high accuracy
- ✓ Performing call analytics and medical transcription
Superwhisper
- ✓ Dictating emails and documents by voice
- ✓ Transcribing voice notes locally on macOS
- ✓ Converting spoken thoughts into formatted text
People also ask
What is the difference between AssemblyAI and Superwhisper?
Both are tracked for speech-to-text, transcription. Of the capabilities they do not share, only AssemblyAI is tracked for speaker-identification, developer-api, and only Superwhisper is tracked for voice-generation.
How much do AssemblyAI and Superwhisper cost?
AssemblyAI: free plan, then $0.02 usage-based. Superwhisper: free plan available.
Answers are generated from the tracked plans and capability tags shown above, so they move when the vendors' pages do.
Full fact sheets, FAQs, and discussion links: AssemblyAI · Superwhisper · all audio tools