Custom Vocabulary allows you to add business-specific terms, product names, and industry jargon to improve transcription and post-call summaries accuracy across all AI Assist features.

Overview

Custom Vocabulary helps AI Assist recognize and accurately transcribe words that are unique to your business, such as:

  • Product names
  • Technical terms
  • Competitor names
  • Internal processes

Once added, these terms are automatically applied to all transcription services, including real-time transcription and call summaries.

Here is a revised version of that section you can drop in:

Who can use Custom Vocabulary?

Use this quick checklist to confirm access:

  • Plan requirement: You must have AI Assist or AI Assist Pro.
  • User role: You must be an Admin or Owner in Aircall.
  • Where to find it: Go to Aircall Dashboard → AI Assist → Settings → Glossary

If you do not see the Glossary tab:

  • Check that your account has AI Assist or AI Assist Pro
  • Ask an Admin or Owner to confirm your permissions

Adding custom terms

Steps:

  1.  Go to Aircall Dashboard → AI Assist → Settings → Glossary

  2. Click on Add term

    Image showing the path to add a term in AI Assist glossary
  3. Enter the term you want to add, for example:
    • Aircall
    • SalesForce
    • CSAT
  4. You can add a pronunciation hint if the term has an unusual pronunciation.
  5. Select one or more categories:
    • Product names
    • Processes
    • Competitors
    • People
    • Locations
    • Other
  6. Choose which languages the term applies to:
    • All languages: the term will be recognized across all supported languages
    • Specific languages: 
      • English
      • French
      • Spanish
      • German
      • Portuguese
      • Italian
      • Dutch

  7. Click Save.

    Image showing the add term details

Managing your custom terms

From the Glossary tab, you can:

  • Search: Use the search bar to find specific terms.
  • Filter by category: Show only terms from a selected category.
  • Filter by language: Show only terms that apply to a selected language.
  • Delete: Select one or more terms and click Delete to remove them.
  • Edit: To edit a term, you would need to delete it and re-add it.
Image showing filters and delete button in the glossary tab

Limits and best practices

Limits

LimitDetails
Maximum termsUp to 100 terms per company
Term lengthSingle words or short phrases

Best practices

  • Add terms that are frequently misheard or misspelled in transcriptions.
  • Include product names, acronyms, and industry-specific terminology.
  • Use pronunciation hints for terms with unusual pronunciations, such as foreign words or acronyms pronounced as words.
  • Focus on terms that directly impact transcription quality and avoid common everyday words.

How Custom Vocabulary improves transcription

When you add a term to your Custom Vocabulary:

  • The term is sent to the transcription engine with each call.
  • The AI model is primed to recognize and correctly spell these terms.
  • Accuracy improves for:
    • Post-call transcription
    • Post-call summaries

This applies automatically; no additional configuration is required after you add your terms.

FAQs

Will my custom terms appear in past transcriptions?

No. Custom Vocabulary applies to new calls only. Existing transcriptions are not updated.

Can I add terms in multiple languages?

Yes. Each term can be associated with multiple languages or set to All languages to apply universally.

Why is there a limit of 100 terms?

The limit helps maintain optimal transcription performance. Focus on terms that have the highest impact on accuracy.

Do I need AI Assist Pro for Custom Vocabulary?

No. Custom Vocabulary is available with both AI Assist and AI Assist Pro licenses.