AssemblyAI alternatives
Looking for AssemblyAI alternatives? Below are 8 tools we track that share at least one capability tag with AssemblyAI (transcription, speech-to-text, speaker-identification, developer-api). Overlap is required on purpose: same-category tools that do different jobs are not listed as substitutes.
AssemblyAI itself is tracked as free plan (Free plan, then $0.02 usage-based). 6 of 8 have a free option; 2 are paid-only. Every price and free-tier claim on this site is read from the vendor's own pages and re-checked on a schedule, not invented for a listicle.
AssemblyAI is filed under audio: Voice AI infrastructure for builders. Use the table and cards to match overlapping capabilities, then open any tool page for full plan tiers and FAQs.
Voice AI infrastructure for builders. Full breakdown on the tool page · Free plan, then $0.02 usage-based
At a glance
Shared capability tags and pricing models we track. Open a row for the full fact sheet.
| Tool | Pricing | Shared with AssemblyAI |
|---|---|---|
| Castmagic | From $19/mo | transcription, speech-to-text, speaker-identification |
| Rev | Free plan, then $25.49/mo | transcription, speech-to-text, developer-api |
| Cartesia | Free plan, then $5/mo | speech-to-text, transcription |
| Deepgram | Free plan, then $200 usage-based | speech-to-text, speaker-identification |
| Notta | Free plan, then $8.17/mo | transcription, speaker-identification |
| Otter.ai | Free plan, then $8.33/mo | transcription, speaker-identification |
| Superwhisper | Free plan, then $8.49/mo | speech-to-text, transcription |
| Trint | Paid | transcription, speaker-identification |
Partner pick from this list
We have an affiliate relationship with Castmagic. It qualified for this list on the same shared-capability rule as every other tool here, and paying us does not move anything up the page.
- 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
All AssemblyAI alternatives
audio Castmagic audio
AI content platform for audio and video repurposing
Shared: transcription, speech-to-text, speaker-identification
audio Rev audio
Investigative evidence analysis and speech-to-text platform
Shared: transcription, speech-to-text, developer-api
audio Cartesia audio
Real-time speech synthesis, transcription, and voice agent platform
Shared: speech-to-text, transcription
audio Deepgram audio
Real-time APIs for speech-to-text, text-to-speech, and voice agents
Shared: speech-to-text, speaker-identification
audio Notta audio
AI meeting and transcription platform for capturing conversations
Shared: transcription, speaker-identification
audio Otter.ai audio
AI meeting assistant for audio recording, note-taking, and summaries
Shared: transcription, speaker-identification
audio Superwhisper audio
Voice to text dictation software powered by local and cloud AI
Shared: speech-to-text, transcription
audio Trint audio
Fast track your first draft with AI transcription software
Shared: transcription, speaker-identification
Compare AssemblyAI side by side
Facts only: pricing, platforms, and capabilities. No winner declared.
How we pick alternatives
We only list a tool as an alternative when it shares one or more capability tags with AssemblyAI. Tags that every AI product could claim (having an API, offering templates, generating something) do not count toward that on their own. Category membership can boost ranking in the list but never replaces tag overlap. We do not score tools, invent reviews, or declare a winner: those would be ratings, and this site is a tracker.
See also audio AI tools and how we track tools.
People also ask
What are alternatives to AssemblyAI?
We do not rank a single "best" option. The 8 tools below share capabilities with AssemblyAI: Castmagic, Rev, Cartesia, Deepgram, and others. Compare pricing and tags on this page, then open each tool's fact sheet for plans and sources.
Is there a free alternative to AssemblyAI?
Yes—6 of the 8 overlapping tools we track publish a free plan or free tier: Rev, Cartesia, Deepgram, Notta, Otter.ai, and more. "Free" here means a non-trial $0 plan when we have tier data, or a free/freemium pricing model otherwise.
How does AssemblyAI pricing compare?
AssemblyAI: Free plan, then $0.02 usage-based. Alternatives on this page show their own tracked prices in the table. We never annualize or convert figures the vendor did not print.
How do you choose AssemblyAI alternatives?
We only list a tool as an alternative when it shares one or more capability tags with AssemblyAI. Tags that every AI product could claim (having an API, offering templates, generating something) do not count toward that on their own. Category membership can boost ranking in the list but never replaces tag overlap. We do not score tools, invent reviews, or declare a winner: those would be ratings, and this site is a tracker.
Where can I compare AssemblyAI side by side?
Side-by-side pages (pricing and capabilities, no winner): AssemblyAI vs Cartesia; AssemblyAI vs Castmagic; AssemblyAI vs Deepgram; AssemblyAI vs Descript.