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Managed speech-to-text and speech intelligence

AssemblyAI

A managed transcription platform with prerecorded and streaming models plus optional speech-intelligence capabilities.

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Editorial verdict

Choose AssemblyAI when managed transcription quality and speech-intelligence features matter more than running the pipeline, after testing the exact model and governing session duration, retention, and training settings.1234

Best for

  • Prerecorded transcription with structured intelligence
  • Streaming transcription with explicit session controls
  • Teams wanting diarization, key terms, or domain features from one API
1234

Not ideal for

  • Teams requiring full control of model infrastructure
  • Applications unable to close idle streaming sessions
  • Buyers who have not verified retention, training, region, or BAA needs
1234
Main trade-off

Managed transcription and intelligence reduce pipeline assembly while adding model, session, feature, retention, region, and provider dependence.1234

Product boundary

Whether AssemblyAI's transcription models and intelligence add-ons fit the audio, latency, language, retention, and session-billing requirements.

This page evaluates AssemblyAI speech-to-text and speech-intelligence APIs. Its Voice Agent and LLM Gateway products are separate decisions. Prerecorded audio and live sessions use different billing mechanics, and optional intelligence features add separate meters.1234

For: Teams prioritizing managed transcription and speech intelligence that can validate exact model behavior and data-policy settings

  • The production workload, language, model, provider, or deployment boundary changes
  • Current pricing, retention, data use, policy, or regional support changes
  • Measured quality, latency, reliability, or operating cost no longer fits

Why teams consider AssemblyAI

  • Two audio pathsOfficial pricing explains prerecorded audio-duration and streaming-session billing.1234
  • Speech intelligenceThe platform combines transcription with optional structured analysis capabilities.1234
  • Data controlsOfficial policy documents training opt-out, retention, regional, and BAA-dependent boundaries.1234

Pricing

Prerecorded transcription uses processed audio duration; streaming uses total session duration; model choice and speech-intelligence features can add separate charges.1

Current official route

Pay as you go or contracted scale

Verified 2026-07-27: AssemblyAI publishes model-specific hourly or session pricing and separate add-on rates. Total cost depends on actual audio or open-session duration, selected model, and enabled features.1

Prerecorded
Actual processed audio duration1
Streaming
Total connected session duration1
Add-ons
Diarization, key terms, medical, and other intelligence are model or feature specific1
Pricing checked View official pricing

AssemblyAI vs alternatives

Deepgram

Choose when
Choose Deepgram when real-time speech is central and measured performance on the exact audio, language, model, and region justifies a specialized provider; evaluate speech recognition and generation separately.
Avoid when
Teams assuming one model or price covers both modalities
Compared with AssemblyAI
Specialized streaming speech reduces integration latency work while increasing model-version, modality, add-on, data-policy, regional, and provider dependence.56

Google Cloud Speech-to-Text

Choose when
Choose Google Cloud Speech-to-Text when Google Cloud placement, supported languages, batch economics, or service governance fit, after validating the exact V2 model, region, channel, and logging configuration.
Avoid when
Text-to-speech or general Gemini model use
Compared with AssemblyAI
Google Cloud integration and scale reduce platform assembly while adding recognizer, model, language, region, channel, IAM, logging, and cloud-specific cost boundaries.78

Resources and sources

Official product, documentation, pricing, and policy sources

  • AssemblyAI pricing
    Open
  • How AssemblyAI pricing works
    Open
  • AssemblyAI documentation
    Open
  • AssemblyAI data retention and model training
    Open
  • Deepgram pricing
    Open
  • Deepgram speech-to-text models and languages
    Open
  • Google Cloud Speech-to-Text
    Open
  • Google Cloud Speech-to-Text pricing
    Open

Related tasks

  1. 1
    AssemblyAI pricing

    AssemblyAI · Accessed Official

  2. 2
    How AssemblyAI pricing works

    AssemblyAI · Accessed Official

  3. 3
    AssemblyAI documentation

    AssemblyAI · Accessed Official

  4. 4
    AssemblyAI data retention and model training

    AssemblyAI · Accessed Official

  5. 5
    Deepgram pricing

    Deepgram · Accessed Official

  6. 6
    Deepgram speech-to-text models and languages

    Deepgram · Accessed Official

  7. 7
    Google Cloud Speech-to-Text

    Google Cloud · Accessed Official

  8. 8
    Google Cloud Speech-to-Text pricing

    Google Cloud · Accessed Official