AssemblyAI vs ElevenLabs
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | AssemblyAI | ElevenLabs |
|---|---|---|
| Best for | Developers and data teams building speech-to-text applications, voice agents, and audio analysis pipelines. | Content creators, publishers, and marketers needing high-quality text-to-speech, voice cloning, and dubbing. |
| Pricing | Free tier includes 100 hours of transcription; pay-as-you-go at $0.37/hr for all features; enterprise custom pricing. | Free tier offers 10K characters/mo; paid plans start at $5/mo for 30K characters; Pro at $22/mo for 100K characters. |
| Setup complexity | Straightforward API with SDKs for Python, Node.js, Go, Java; quick integration for developers. | Easy web interface and API; low barrier for non-developers; SDKs available but primary focus on UI. |
| Strongest differentiator | Accurate speech-to-text with speaker diarization, sentiment analysis, and LeMUR for LLM-powered audio insights. | Hyper-realistic voice generation with expressive controls, voice cloning, and a vast voice library. |
AssemblyAI vs ElevenLabs targets different core use cases, so the winner depends on your primary need. For developers building speech-to-text applications, voice agents, or audio analysis pipelines, AssemblyAI wins because of its high-accuracy transcription, speaker diarization, and LeMUR LLM integration. For content creators needing ultra-realistic voice generation, voice cloning, or dubbing, ElevenLabs leads with its expressive text-to-speech and all-in-one editor. If you're deciding based on voice input vs. output, pick the one that matches your workflow.
Feature-by-feature
Core Capabilities: AssemblyAI vs ElevenLabs
AssemblyAI focuses on speech-to-text and audio intelligence, offering high-accuracy transcription, speaker diarization, sentiment analysis, topic detection, and content moderation. Its LeMUR feature applies LLMs to audio data for summarization and insight extraction. ElevenLabs excels at text-to-speech and voice generation, providing hyper-realistic voices in 70+ languages, voice cloning, and expressive controls like tone and emotion. While AssemblyAI can output text, ElevenLabs generates spoken audio. Neither duplicates the other's primary function.
AI/Model Approach: AssemblyAI vs ElevenLabs
AssemblyAI uses specialized deep learning models optimized for ASR and speech understanding, including Universal-3 Pro Streaming for real-time transcription with disfluency control and code-switching. ElevenLabs leverages generative AI for voice synthesis, achieving industry-recognized realism. The two diverge in purpose: one models speech recognition, the other speech generation. No direct benchmarks compare them.
Integrations & Ecosystem: AssemblyAI compared to ElevenLabs
AssemblyAI provides official SDKs for Python, Node.js, Go, Java, and integrations with Twilio, Zoom, and LiveKit SDK, enabling embedding into telephony and video platforms. ElevenLabs offers a straightforward API and Zapier integration for no-code workflows but lacks the breadth of real-time telephony integrations. For voice agent or call center use, AssemblyAI's ecosystem is more targeted. ElevenLabs integrates better with content creation tools via direct connection.
Performance & Scale: AssemblyAI vs ElevenLabs in 2026
As of 2026, AssemblyAI offers pay-as-you-go pricing with no contracts, scaling from individual developers to enterprises handling millions of hours of audio. ElevenLabs' character-based pricing can become expensive at high volumes — 100K characters on Pro costs $22/mo, but exceeding that incurs overage. For bulk transcription, AssemblyAI's per-hour cost is more predictable. ElevenLabs is better for lower-volume, high-quality voice generation projects.
Developer Experience or Workflow: Switching from AssemblyAI to ElevenLabs
AssemblyAI's developer experience is top-tier, with clear API docs, code examples, and LeMUR for advanced audio analysis. ElevenLabs also has a developer-friendly API but emphasizes its web editor for non-coders. For developers building real-time voice applications, AssemblyAI's Voice Agent API and streaming capabilities provide a more complete toolkit. ElevenLabs' agents (ElevenAgents) are newer and less proven in production.
Pricing compared
AssemblyAI pricing (2026)
AssemblyAI operates on a freemium, pay-as-you-go model. The free plan includes 100 hours of core transcription, suitable for evaluation and small projects. The pay-as-you-go tier costs $0.37 per hour and grants access to all features including speaker diarization, sentiment analysis, and LeMUR. Enterprise plans offer volume discounts, SLA guarantees, and on-premise deployment options (custom pricing). There are no contracts or minimums, making it flexible for scaling.
ElevenLabs pricing (2026)
ElevenLabs also has a freemium model. The free plan provides 10,000 characters per month and 3 custom voices. Starter ($5/mo) gives 30,000 characters and 10 voices. Pro ($22/mo) offers 100,000 characters, 30 voices, and commercial use rights. Higher tiers (not listed) may be available for larger volumes. Character-based pricing can escalate quickly for text-to-speech projects requiring thousands of words, as each character counts.
Value-per-dollar: AssemblyAI vs ElevenLabs
For speech-to-text and audio understanding, AssemblyAI delivers high accuracy at a low per-hour rate, making it more cost-effective for bulk transcription or real-time voice processing. ElevenLabs excels in voice generation but its character-based pricing makes high-volume text-to-speech expensive. For content creators producing short audio (e.g., YouTube voiceovers), ElevenLabs' Pro plan at $22/mo is reasonable. For enterprises processing hundreds of hours of call audio, AssemblyAI's pay-as-you-go is significantly cheaper.
Who should pick which
- Developer building a voice agent for customer support callsPick: AssemblyAI
AssemblyAI offers the Voice Agent API, real-time transcription with Universal-3 Pro Streaming, and LeMUR for applying LLMs to audio, all essential for building a conversational IVR system.
- YouTuber needing voiceovers for weekly videos (approx. 10 min each)Pick: ElevenLabs
ElevenLabs' text-to-speech with expressive controls and voice cloning can generate natural-sounding voiceovers quickly; the Pro plan's 100K chars/mo covers several videos.
- Healthcare IT team transcribing medical consultations in real timePick: AssemblyAI
AssemblyAI's Medical Mode, support for 99+ languages, and real-time diarization meet HIPAA-like requirements (via enterprise plans) and provide accurate medical transcription.
- Indie game developer creating character dialoguePick: ElevenLabs
ElevenLabs' voice library and custom voice cloning allow creating unique character voices; the pay-as-you-go or Starter plan suits low-volume, high-quality needs.
- Podcast platform needing searchable transcripts with speaker labelsPick: AssemblyAI
AssemblyAI's high-accuracy speaker diarization and topic detection enable automatic transcript generation and search indexing, scalable via the pay-as-you-go model.
Frequently Asked Questions
Does AssemblyAI have a free tier?
Yes, AssemblyAI offers a free plan with 100 hours of core transcription. It is sufficient for evaluation and small projects.
Does ElevenLabs have a free tier?
Yes, ElevenLabs offers a free plan with 10,000 characters per month and 3 custom voices, suitable for testing.
Which tool is better for real-time voice agents?
AssemblyAI is better for real-time voice agents because it provides the Voice Agent API, Universal-3 Pro Streaming, and real-time diarization. ElevenLabs' conversational agents are newer and less production-proven for low-latency telephony.
Can ElevenLabs transcribe audio?
Yes, ElevenLabs offers speech-to-text transcription as one of its features, but its primary strength is text-to-speech. AssemblyAI is more specialized and accurate for transcription.
How do pricing models compare for large volumes?
AssemblyAI charges $0.37 per hour of audio, which is economical for large volumes. ElevenLabs charges per character, making it expensive for long text; for example, 100K characters on Pro costs $22 but may be inadequate for a full-length audiobook.
Which tool integrates with Zoom and Twilio?
AssemblyAI has native integrations with Twilio and Zoom via its SDKs. ElevenLabs does not list direct telephony integrations but can be used via API.
Is ElevenLabs good for dubbing videos?
Yes, ElevenLabs offers automatic dubbing and a dubbing studio, making it a strong choice for video localization. AssemblyAI does not provide dubbing features.
Which tool has better language support?
AssemblyAI supports 99+ languages for speech-to-text. ElevenLabs supports 70+ languages for text-to-speech. Both are broad, but AssemblyAI leads in transcription language coverage.
Can I use AssemblyAI for text-to-speech?
No, AssemblyAI does not offer text-to-speech generation. It focuses on speech-to-text and audio understanding. For TTS, you would need ElevenLabs or another provider.
Which tool is easier for non-developers?
ElevenLabs offers a user-friendly web editor and no-code integrations via Zapier, making it more accessible to non-developers. AssemblyAI is API-first and best suited for developers.
Last reviewed: May 12, 2026