AssemblyAI vs Notta
A detailed comparison to help you choose between AssemblyAI and Notta.
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Verdict: AssemblyAI wins
AssemblyAI scores 4.3/5, edging out Notta 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 | Notta Transform audio to text with AI summaries | |
|---|---|---|
| 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. | Multilingual teams and individual professionals who record meetings or interviews regularly and want capture, translation, summaries, and exportable deliverables in one subscription. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | api accessfree tier | mobile appapi accessfree tier |
| Visit AssemblyAI → | Visit Notta → |
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
Notta
Pros
- + Bot-free desktop capture records system audio plus microphone with no meeting bot joining Zoom, Teams, Meet, or Slack calls — in my use this removed the consent conversation from client meetings entirely
- + Widest language coverage in the category I test: 58 transcription languages, 23 bilingual live pairs, 80 real-time translation targets
- + Pro annual at $8.17/month for 1,800 minutes works out around $0.0045 per audio minute at time of writing (notta.ai pricing page), cheaper than most rivals
- + Practical export set — TXT, DOCX, PDF, SRT, XLSX — with a clean SRT I dropped straight into a video editor and clickable timestamps in the transcript
- + Documented security posture: SOC 2 Type II and ISO 27001 attestations, plus local offline transcription via Pro Privacy Mode on macOS 13+/Windows 10+
Cons
- - Free plan caps every conversation at 3 minutes, which rules out the main use case for a transcription tool and tests the interface rather than the workflow
- - Real-time translation is a paid add-on from $6/month at time of writing with only 2 free uses a month; bilingual transcription gets 4 free uses
- - Custom vocabulary covers only English and Japanese, so domain terminology in other languages gets no recognition help
- - The 98.86% accuracy figure is a vendor claim under optimal conditions; diarization stumbled on overlapping speakers and heavy accents in my testing and third-party reports
- - Monthly-billing prices disagree between Notta's pricing page and help centre ($13.99 vs $13.49 for Pro) and are hard to find on the site at all
Frequently Asked Questions
Which is better, AssemblyAI or Notta?▼
AssemblyAI scores higher at 4.3/5 vs 4.2/5 for Notta, making it the better-rated option in our comparison.
What is the difference between AssemblyAI and Notta?▼
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. Notta: AI-powered transcription tool that converts audio and video content into accurate text with intelligent summaries across multiple platforms.
Is AssemblyAI or Notta more affordable?▼
AssemblyAI pricing varies, Notta starts at €0/mo. Check the comparison table above for current pricing.
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