AssemblyAI vs ElevenLabs

Tagline

Build with accurate speech recognition and voice AI models through modular and easy-to-integrate APIs.

Ultra-realistic AI voice generation and cloning

Category

Pricing

Rating

Platforms

API

Open source

Description

AssemblyAI is a voice AI infrastructure platform providing accurate transcription models. It offers developer APIs for Speaker Diarization, Language Detection, Real-time Streaming STT, Auto Chapters, Sentiment Analysis, and Conversational Voice Agents.

ElevenLabs offers state-of-the-art text-to-speech, dubbing, and voice cloning in 30+ languages.

Key features

• Speaker Diarization
• Automatic Language Detection
• Pre-recorded Speech-to-Text
• Real-time Streaming STT
• Synchronous Short STT
• Voice Agent API
• Sentiment Analysis
• Auto Chapters
• PII Redaction
• Profanity Filtering
• Medical Mode
• Voice Focus

• Emotion controls
• Multi-language

Pros

• Achieves a low 2.9% speaker diarization error rate.
• Supports multilingual speaker diarization across 95 languages.
• Language detection API supports 99 different languages.
• API integration is simple, requiring less than 10 lines of code to get started.
• Supports both pre-recorded audio and real-time streaming speech-to-text.
• Voice Agent API enables deployable conversational voice agents over browser or phone.
• Provides specialized features like Auto Chapters, Sentiment Analysis, PII Redaction, and Medical Mode.
• Integration capabilities with LiveKit, Pipecat, and Twilio are supported.

• State-of-the-art voice quality
• 30+ languages
• Instant and Professional voice cloning
• Multilingual dubbing
• Developer API
• Sound-effect generation
• Speech-to-speech
• Free tier available

Cons

• Specific pricing schedules and tier rates are not listed within the crawled snippets.
• No free-tier usage limits or trial size details are disclosed in the retrieved content.
• No mobile-native SDKs (like iOS or Android) are explicitly referenced in the documentation index.
• The exact compliance certifications (such as SOC2 or HIPAA) are not verified in the snippets.
• The core transcription models are proprietary and not provided as open source.

• Voice cloning raises ethical concerns
• Character-based pricing
• Watermark on free tier
• Cloning needs quality samples
• Emotion artifacts on edge cases
• No native lip-sync tool
• Limited real-time streaming
• Advanced features gated to paid

Pricing plans

• FreeUSD0/month
  • • Text to Speech
  • • Speech to Text
  • • Sound Effects
  • • Voice Design
• StarterUSD6/month
  • • Everything in Free, plus
  • • Commercial License
  • • Instant Voice Cloning
  • • Dubbing Studio
• CreatorUSD22/month
  • • Everything in Starter, plus
  • • Professional Voice Cloning
  • • Additional Credits
• ProUSD99/month
  • • Everything in Creator, plus
  • • 44.1kHz PCM audio output via API
  • • 192kbps quality audio
• ScaleUSD299/month
  • • Everything in Pro, plus
  • • 3 Workspace seats
  • • Team Collaboration
  • • 3 Professional Voice Clones
• BusinessUSD990/month
  • • Everything in Scale, plus
  • • Low-latency TTS as low as 5c/minute
  • • 10 Professional Voice Clones
  • • 10 Workspace seats
• Enterprise—
  • • Everything in Business, plus
  • • Custom terms & assurance around DPA/SLAs
  • • Custom SSO
  • • Significant discounts at scale
• Flash / Turbo—
  • • Ultra-low latency (~75ms)
  • • 32 languages supported
  • • 40,000 character limit
• Multilingual v2 / v3—
  • • Low latency (~250-300ms)
  • • High quality voice generation
  • • 32 languages supported
  • • 40,000 character limit
• Scribe v2—
  • • Over 98% transcription accuracy
  • • Keyterm prompting
  • • 90+ languages supported
  • • Dynamic audio tagging
• Scribe v2 Realtime—
  • • Low latency (~150ms)
  • • 90+ languages supported
  • • Precise word-level timestamps
  • • Realtime transcription
• Speech Engine—
  • • Add voice to your chat agent
  • • Get leading models in a single pipeline
  • • Optimized for conversations
  • • Expressive voices in 70+ languages
• Music—
  • • 5 minute duration limit
  • • Commercial use licensing on Starter+ plans
  • • 44.1kHz, 128-192kbps audio
• Voice Isolator—
  • • Removes ambient sounds, reverb, and interference
  • • WAV, MP3, FLAC, OGG and AAC audio inputs
  • • Files up to 500MB/1 hour long
• Voice Changer—
  • • Fast real-time processing
  • • 10,000+ human-like voices
  • • 70+ languages supported
• Sound Effects—
  • • Generate custom sound effects
  • • Royalty-free
  • • MP3 (44.1kHz) or WAV (48kHz) output
• Dubbing v1—
  • • Automatic speaker detection
  • • 29 languages supported
  • • MP3, MP4, WAV, and MOV formats
• CreatorUSD11/month
  • • Most popular
  • • First month 50% off
  • • Cancel anytime
• FreeUSD0/month
  • • Workflow Builder
  • • Knowledge Base
  • • Multilingual
  • • Widget
• StarterUSD6/month
  • • Everything in Free, plus
  • • Text messages
  • • Commercial License
• CreatorUSD22/month
  • • Everything in Starter, plus
  • • Additional Minutes
• ProUSD99/month
  • • Everything in Creator, plus
• ScaleUSD299/month
  • • Everything in Pro, plus
  • • 3 Workspace Seats
• BusinessUSD990/month
  • • Everything in Scale, plus
  • • 10 Workspace seats
  • • 10 Professional Voice Clones
• Enterprise—
  • • Everything in Business, plus
  • • Custom terms & assurance around DPA/SLAs
  • • Custom SSO
  • • Significant discounts at scale

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