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    Conversation Intelligence API
    Freemium
    Free Trial
    Sponsored

    Symbl.ai

    Conversation Intelligence API

    Symbl.ai provides conversation intelligence APIs for developers to extract insights from audio, video, and text conversations. It offers real-time and async processing for transcription, sentiment analysis, topic detection, action items, call scoring, and the Nebula LLM model for conversational AI applications.

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    AI tools for

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    Alternatives & similar tools

    Related picks from editorial notes.

    Also mentioned

    • AssemblyAI (speech-to-text and audio intelligence API)
    • Deepgram (real-time transcription and voice AI API)
    • Google Cloud Speech-to-Text (enterprise speech recognition API)

    Features & details

    Full overview from our catalog (read-only reference).

    Category (short)
    Conversation Intelligence API
    Category
    Conversation Intelligence API
    Pricing (CSV)
    Free Trial
    Directory pricing
    Freemium
    Sponsored note
    no
    Target audience
    Developers embedding conversation AI into their own products via API. Not ideal for: end users wanting a ready-made meeting notes app; use Supernormal or Otter instead.
    Best for
    Developers embedding conversation AI into their own products via API. Not ideal for: end users wanting a ready-made meeting notes app; use Supernormal or Otter instead.
    Pricing notes
    Free: $0 with up to 1,000 audio/video minutes/mo, 10,000 text words/mo, 50 Call Score criteria, 5 Real Time Assist minutes, 5 concurrent connections. Pay-as-you-go: first 1,000 min/mo free, then $0.027/min (next 29K min), $0.017/min (over 30K min). Text: first 10,000 words free, then $0.0002/word (next 3.74M), $0.00012/word (over 3.75M). Call Score: $0.10/criteria per conversation on PayG. Enterprise: custom with up to 50+ concurrency, volume discounts, private deployment, SLAs.

    Pros & cons

    Editorial notes to help compare fit before opening the vendor site.

    Pros

    • Substantial free tier for development and testing
    • Competitive high-volume per-minute rates
    • Real-time and async processing options
    • Private environment deployment on Enterprise

    Cons

    • Developer-focused
    • no end-user application
    • Real Time Assist limited to 5 free minutes
    • Call Score API adds per-conversation costs
    • Higher concurrency requires Enterprise plan

    Review notes

    Context from the listing review and editorial research.

    Verified July 2026 at symbl.ai/company/pricing. Generous free tier for developer prototyping. High-volume audio rates ($0.017/min) competitive with AssemblyAI and Deepgram.

    Extended features

    In-depth description and capability notes.

    Audio/video conversation processing API Real-time and async transcription and analysis Call Score API for conversation quality metrics Real Time Assist API for live conversation coaching Nebula Model API for conversational LLM at scale Topic detection, action items, and sentiment extraction Enterprise deployment in private environments

    Use cases

    Developers and product teams building conversation intelligence features into contact center software, sales coaching tools, and meeting analytics platforms.