AssemblyAI vs Riverside.fm
A detailed comparison to help you choose between AssemblyAI and Riverside.fm.
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Verdict: AssemblyAI wins
AssemblyAI scores 4.3/5, edging out Riverside.fm at 4.2/5. Developers and product teams shipping speech-to-text, voice agents, or call-analytics features who want an API with published per-hour rates and built-in redaction.
AssemblyAI Speech AI models for developers | Riverside.fm Record studio-quality podcasts and videos | |
|---|---|---|
| Rating | 4.3 (1 review) | 4.2 (1 review) |
| Pricing Model | free | freemium |
| Starting Price | Free | Free tier available |
| Best For | Developers and product teams shipping speech-to-text, voice agents, or call-analytics features who want an API with published per-hour rates and built-in redaction. | Professional podcasters and video interviewers who need broadcast-grade remote capture with separate tracks and browser editing. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | api accessfree tier | free tierteam features |
| Visit AssemblyAI → | Visit Riverside.fm → |
AssemblyAI
Pros
- + Transparent, published rate card: $0.15/hr for Universal-2 and $0.21/hr for Universal-3.5 Pro at time of writing (assemblyai.com/pricing.md), with worked examples showing exactly how add-ons stack
- + $50 in free credits at signup with no credit card required, so I could benchmark real audio before paying anything
- + Guardrails (PII audio/text redaction, profanity filter, content moderation) are first-party add-ons instead of a second vendor contract
- + EU data residency at the same price as US processing — no GDPR surcharge in my review of the rate card
- + Voice Agent API bundles STT + LLM + TTS + turn detection at one $0.075/min rate, which I found cheaper than assembling the same pipeline by hand
Cons
- - No end-user app: everything runs through the API, so non-developers have no path in
- - Streaming bills by open-connection time, not audio sent — an idle socket left open after a call keeps charging in my testing
- - Add-ons stack on the base rate until a 'cheap' transcript approaches $0.40–$0.60/hr for the feature set most teams want
- - Long-file processing is async only; no synchronous option for large uploads
- - Legacy Auto Chapters and Summarization add-ons are deprecated and can fail silently on newer models per the vendor's own pricing reference
Riverside.fm
Pros
- + Local capture on each participant's device kept a guest's 4K/48kHz track clean in my test despite a freezing video call
- + Text-based editing plus silence and filler-word removal turned episode editing into a review pass
- + Separate high-quality track per speaker makes real multitrack repair possible
- + Publishing stack (hosting, show notes, magic clips, newsletter, live streaming) covers the whole podcaster workflow
- + 14-day trial on paid plans lets you pressure-test guest onboarding with your real guest list
Cons
- - Free plan is two hours of recording total at 720p with watermark — a demo, not a hobby tier
- - Guests need a modern browser or the app with camera/mic permissions; no phone dial-in on standard plans
- - Final high-quality tracks upload after the call, and long 4K sessions mean real waiting
- - Growth features (scheduling, newsletter, live studio, webinars) are tier-gated above Pro
- - Editing ceiling: no multi-track audio mixing or colour grading, so finishing happens in a real NLE
Frequently Asked Questions
Which is better, AssemblyAI or Riverside.fm?▼
AssemblyAI scores higher at 4.3/5 vs 4.2/5 for Riverside.fm, making it the better-rated option in our comparison.
What is the difference between AssemblyAI and Riverside.fm?▼
AssemblyAI: AssemblyAI is a developer API that converts recorded or live speech into text, with speaker labels and options to summarise transcripts. Pay-as-you-go from about $0.15 per audio hour. Riverside.fm: Riverside records podcasts and video interviews locally at each end, so the quality does not depend on the call connection, and edits the result in the browser.
Is AssemblyAI or Riverside.fm more affordable?▼
AssemblyAI pricing varies, Riverside.fm starts at €0/mo. Check the comparison table above for current pricing.
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