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IBM Speech To Text

Automate transcription, create custom language models, and convert audio recordings into text quickly.

Try IBM Speech To Text free
  • Free plan available
  • No credit card
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What is IBM Speech To Text?

IBM Speech to Text is a cloud-based service that converts audio files and live speech into written text. It uses machine learning models trained on various audio conditions, accents, and technical terminology to produce accurate transcriptions across multiple languages. The service is designed for businesses that need to process large volumes of audio, from customer service recordings to medical dictations. You can use it out of the box or train custom language models to improve accuracy for domain-specific vocabulary and acoustic conditions unique to your organisation.

Key features

Automatic speech recognition

converts audio in real-time or from pre-recorded files into text

Custom language models

train the system on your own vocabulary and acoustic patterns to improve accuracy for specialist terminology

Multi-language support

recognises speech in numerous languages and regional variants

Speaker labels

identifies different speakers in a recording and attributes text to each one

Confidence scoring

returns accuracy confidence levels for transcribed segments so you know which parts are reliable

Audio format flexibility

accepts various codecs and sample rates including MP3, WAV, FLAC, and others

Pros & cons

Advantages

  • Freemium option lets you test the service with a small monthly allowance before paying
  • Custom models significantly improve accuracy when you have domain-specific language like legal jargon or medical terms
  • Scales well for high-volume transcription work through cloud infrastructure
  • Speaker identification helps with multi-person recordings like interviews and meetings

Limitations

  • Accuracy depends heavily on audio quality; background noise and poor recording conditions reduce performance
  • Custom model training requires preparation time and technical setup to see real benefits
  • Pricing can accumulate quickly if you process large audio files regularly beyond the free tier

Use cases

Transcribing customer support calls and chat interactions for compliance and training

Converting medical dictations and patient notes into structured text

Generating searchable transcripts of meetings, webinars, and recorded presentations

Creating subtitles and captions for video and audio content

Automating documentation in legal discovery and contract review processes

Ready to try IBM Speech To Text?

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Pricing

Free

Free

500 minutes of audio per month; standard models only; ideal for testing and light use

Pay as you go

Variable based on usage

Charged per minute of audio processed; access to custom model training; scales with demand

Get started with IBM Speech To Text

Click through to IBM Speech To Text and start using it now.

Try IBM Speech To Text free
  • Free plan available
  • No credit card