AssemblyAI vs ElevenLabs: pricing, quotas & features (2025)
Best-in-class speech-to-text API — Universal models, 99 languages, low-latency streaming
vs. Best-in-class AI text-to-speech + voice cloning + Conversational AI
Data sourced from vendor documentation · Last updated May 2026
Summary
AssemblyAI and ElevenLabs are both ai-api platforms, addressing the same core use case with different implementation philosophies and trade-offs. Both offer a free tier, making it easy to prototype without a credit card. ElevenLabs offers paid plans from $6/month; AssemblyAI does not publish standard pricing. ElevenLabs has a broader documented feature set (13 vs 11 features). The right choice depends on your existing stack, team experience, and feature requirements. All pricing and quota data below is sourced from AssemblyAI and ElevenLabs's official documentation — not generated by AI or estimated.
AssemblyAI vs ElevenLabs: Comparativa de precios, cuotas y características (2025)
En esta comparativa analizamos AssemblyAI y ElevenLabs lado a lado — incluyendo precios mensuales, límites del tier gratuito, características técnicas, cuotas de uso (almacenamiento, transferencia, usuarios activos mensuales) y los interfaces de desarrollo disponibles. Todos los datos proceden de la documentación oficial de cada proveedor, no de respuestas generadas por IA.
AssemblyAI es una plataforma de la categoría ai-api — Best-in-class speech-to-text API — Universal models, 99 languages, low-latency streaming. Ofrece 3 tiers de precio: Free Credits gratuito, Pay-as-you-go gratuito, Enterprise (personalizado). Su catálogo en Staxly documenta 11 características y 7 interfazes para desarrolladores.
ElevenLabs pertenece a la categoría ai-api — Best-in-class AI text-to-speech + voice cloning + Conversational AI. Ofrece 7 tiers de precio: Free gratuito, Starter desde $6/mes, Creator desde $11/mes, Pro desde $99/mes. Su catálogo documenta 13 características y 6 interfazes para desarrolladores.
A continuación encontrarás los tiers de precio completos de ambas plataformas, una matriz de cuotas del tier gratuito (transferencia, almacenamiento, MAU, llamadas a la API y otros límites), el listado completo de características y los interfaces (CLI, SDKs, REST, GraphQL, MCP) disponibles para integrar cada servicio.
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Pricing tiers
AssemblyAI
ElevenLabs
Free-tier quotas head-to-head
Comparing free-trial on AssemblyAI vs free on ElevenLabs.
| Metric | AssemblyAI | ElevenLabs |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
AssemblyAI · 11 features
- Advanced Prompting — Streaming with disfluency + code-switching + realtime diarization.
- Audio Intelligence — Sentiment, topic detection, summarization, entity detection, content safety, IAB…
- Auto Punctuation — Smart capitalization + punctuation.
- Keyterm Prompting — Boost accuracy for domain vocabulary.
- LeMUR (LLM framework) — Run LLMs over transcripts: Q&A, summary, action items.
- Medical Mode — Specialized for clinical + medical vocabulary.
- PII Redaction — Auto-redact credit cards, SSNs, addresses, emails.
- Pre-recorded Transcription — Upload audio/video URL or file → transcript.
- Realtime Streaming — WebSocket-based low-latency STT.
- Speaker Diarization — Identify who spoke when.
- Webhooks — Auto-notify when transcription finishes.
ElevenLabs · 13 features
- Conversational AI — Voice agents with LLM orchestration + tools.
- Dubbing Studio — Auto-dub video to target languages with lip-sync.
- Projects — Long-form narration workflow — books, podcasts.
- Realtime Streaming — Low-latency TTS streaming via WebSocket.
- Scribe (STT) — High-accuracy speech-to-text with speaker diarization.
- Sound Effects — AI-generated SFX from text prompts.
- Text to Sound — Generate music + sound from text.
- Text-to-Speech — Studio-quality TTS across 29 languages with emotion control.
- Voice Changer — Transform one voice into another preserving delivery.
- Voice Cloning — Instant (short sample) + Professional (30 min +) voice cloning.
- Voice Design — Design voices from text descriptions.
- Voice Library — 3,000+ community voices. License per-voice.
- Voiceover Studio — Multi-character voiceover timeline.
Developer interfaces
| Kind | AssemblyAI | ElevenLabs |
|---|---|---|
| SDK | assemblyai (Node), assemblyai (Python), assemblyai (Ruby), assemblyai-go | elevenlabs (Node), elevenlabs (Python) |
| REST | AssemblyAI REST API | ElevenLabs REST API |
| MCP | — | ElevenLabs MCP |
| OTHER | Streaming WebSocket, Webhooks | WebSocket Streaming, Webhooks |
Key takeaways
- Both AssemblyAI and ElevenLabs offer a free tier — AssemblyAI ("Free Credits") and ElevenLabs ("Free") — with no credit card required to start.
- ElevenLabs's entry paid tier (Starter) costs $6/month; AssemblyAI does not list public pricing.
- ElevenLabs has a broader documented feature set (13 features) vs. AssemblyAI (11 features) in Staxly's catalog.
- Developer integrations differ: only ElevenLabs offers MCP.
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