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Tools/AssemblyAI/vs Retell AI
AssemblyAI

AssemblyAI

ai-speech
vs
Retell AI

Retell AI

ai-speech

AssemblyAI vs Retell AI — Comparison

Pain: 1/10015 integrations10 featuresSeries C
15 integrations10 featuresSeed
Overview
What each tool does and who it's for

AssemblyAI

With AssemblyAI

AssemblyAI is widely praised for its advanced real-time transcription capabilities, particularly with the Universal-3 Pro model, which is recognized for its high accuracy and adaptability in challenging environments like subways. Developers appreciate the flexibility and functionality offered through tools like the Voice Agent API, enabling innovative applications in various industries. Key complaints seem to revolve around the accuracy of specific technical vocabulary, as demonstrated by the need for a Medical Mode feature. Pricing sentiment and detailed discussions on costs are not prominent in the social mentions, but overall, AssemblyAI enjoys a strong reputation within the voice AI community, highlighted by its active participation and support in developer-centric events.

Retell AI

Build, test, deploy, and monitor production-ready AI voice agents at scale with ease, boosting efficiency and performance across your operations.

User reviews and social mentions of Retell AI are sparse but suggest a specific niche usage, particularly in phone-based AI interactions. The tool seems to benefit from integration with Claude and is highlighted for its voice agent capabilities, allowing multitasking by managing AI sessions remotely, which is seen as a unique strength. However, there is no available feedback on specific complaints or issues with the service, making it difficult to gauge potential weaknesses. There is also no direct information on pricing sentiment, but the discussions surrounding its features indicate a positive overall reputation for innovation and utility.

Key Metrics
17
Mentions (30d)
1
Mention Velocity
How discussion volume is trending week-over-week

AssemblyAI

+71% vs last week

Retell AI

Stable week-over-week
Where People Discuss
Mention distribution across platforms

AssemblyAI

Twitter/X
55%
Reddit
42%
YouTube
3%

Retell AI

YouTube
63%
Reddit
38%
Community Sentiment
How developers feel about each tool based on mentions and reviews

AssemblyAI

11% positive85% neutral4% negative

Retell AI

0% positive100% neutral0% negative
Pricing

AssemblyAI

subscription + freemium + contract + tieredFree tier

Pricing found: $0.21 /hr, $0.15 /hr, $0.21 /hr, $0.15 /hr, $0.05 /hr

Retell AI

usage-based + subscription + contract + tieredFree tier

Pricing found: $0,, $10, $0.07, $0.31 / min, $0.002

Use Cases
When to use each tool

AssemblyAI (8)

Transcribing podcasts and interviews for content creationGenerating subtitles for videos and live streamsCreating voice commands for applications and devicesConverting customer service calls into text for analysisTranscribing lectures and educational content for accessibilityDeveloping voice-enabled applications for enhanced user experienceImplementing speech-to-text in healthcare for patient documentationFacilitating real-time transcription for meetings and conferences

Retell AI (8)

Customer support automationAppointment schedulingOrder processing and trackingLead generation and qualificationPersonalized marketing interactionsSurvey and feedback collectionTechnical support assistanceTelehealth consultations
Features

Only in AssemblyAI (10)

Transcribe speech with unmatched accuracyUnderstand context, intent, and meaningPower agentic workflows in real timeScale securely, from MVP to productionSpeech-to-Text APIStreaming Speech-to-Text APIVoice Agent APISpeech Understanding APIGuardrailsLLM Gateway

Only in Retell AI (10)

IVR Voice AgentIVA Voice Agent3rd Gen Voice AILowest LatencyUltra Realistic VoiceTurn takingHigh Configurable Agentic FrameworkReal-Time Function Calling with Preset FunctionsStreaming RAG for knowledge and auto Sync capabilityVoice Call
Integrations

Shared (7)

ZapierSlackMicrosoft TeamsSalesforceShopifyJiraMailchimp

Only in AssemblyAI (8)

Google CloudZoomTrelloNotionWordPressDiscordWebflowAsana

Only in Retell AI (8)

ZendeskTwilioGoogle CalendarHubSpotAmazon ConnectStripeServiceNowQuickBooks
Pain Points
Top complaints from reviews and social mentions

AssemblyAI

token usage (2)token cost (2)down (2)critical (1)API bill (1)API costs (1)outage (1)cost tracking (1)right now (1)

Retell AI

No complaints found

Top Discussion Keywords
Most mentioned keywords from community discussions

AssemblyAI

token usage (2)token cost (2)down (2)critical (1)API bill (1)API costs (1)outage (1)cost tracking (1)right now (1)

Retell AI

No data

Latest Videos
Recent uploads from official YouTube channels

AssemblyAI

No YouTube channel

Retell AI

Agent Handbooks are Live

Agent Handbooks are Live

Apr 9, 2026

Subagent Nodes are live!

Subagent Nodes are live!

Apr 7, 2026

Code Nodes are live on Retell

Code Nodes are live on Retell

Apr 2, 2026

Copy, paste, and undo shortcuts are live 🚀

Copy, paste, and undo shortcuts are live 🚀

Mar 19, 2026

Product Screenshots

AssemblyAI

AssemblyAI screenshot 1AssemblyAI screenshot 2

Retell AI

Retell AI screenshot 1Retell AI screenshot 2Retell AI screenshot 3Retell AI screenshot 4
What People Talk About
Most discussed topics from community mentions

AssemblyAI

streaming31
model selection15
support13
accuracy12
performance12
workflow11
agents10
open source9

Retell AI

Top Community Mentions
Highest-engagement mentions from the community

AssemblyAI

Real-time transcription just got a significant upgrade. Universal-3-Pro is now available for streaming — bringing AssemblyAI's most accurate speech model to live audio for the first time. Developers

Real-time transcription just got a significant upgrade. Universal-3-Pro is now available for streaming — bringing AssemblyAI's most accurate speech model to live audio for the first time. Developers building voice agents, live captioning tools, and real-time analytics pipelines now get three thing

Twitter/Xby @AssemblyAIpositive source

Retell AI

Retell AI AI

Retell AI AI

YouTubeneutral source
Company Intel
information technology & services
Industry
information technology & services
86
Employees
110
$113.1M
Funding
$4.7M
Series C
Stage
Seed
Supported Languages & Categories

Shared (3)

AI/MLDevOpsSecurity

Only in AssemblyAI (1)

Developer Tools

Only in Retell AI (2)

FinTechAnalytics
View AssemblyAI Profile View Retell AI Profile