Voice Agents

Optimize for low latency and fast turn-taking.

Parameter	Recommended value	Why
`endpointing`	`0.05` - `0.1`	Closes utterances fast, keeping turn-taking snappy. See Endpointing.
`maximum_duration_without_endpointing`	`15`	Prevents very long utterances from staying open without cutting off the conversation.
`messages_config.receive_partial_transcripts`	`true`	Enables interim results so the agent can start processing early. Use the `speech_stop` event to know when the user has finished speaking. See Partial transcripts.
`realtime_processing.custom_vocabulary`	`true`	Add product names and action keywords so the agent can react accurately.

If utterances get cut off mid-sentence, raise endpointing slightly.

Meeting Recorders

Optimize for a structured, speaker-attributed live transcript.

Parameter	Recommended value	Why
`endpointing`	`0.3` - `0.5`	Lets speakers finish sentences.
`maximum_duration_without_endpointing`	`15`	Caps utterances when a speaker doesn’t pause.
`messages_config.receive_partial_transcripts`	`true`	Feeds live captions to the UI.
`language_config.languages`	Set explicitly	Avoids detection overhead.
`realtime_processing.custom_vocabulary`	`true`	Company, project, and participant names.

Call Centers

Optimize for speaker identification and accuracy on telephony audio.

Parameter	Recommended value	Why
`endpointing`	`0.2` - `0.4`	Responsive without cutting mid-sentence.
`maximum_duration_without_endpointing`	`15`	Caps monologue-style segments.
`language_config.languages`	Set explicitly (e.g. `["en"]`)	Avoids detection errors on noisy audio.
`realtime_processing.custom_vocabulary`	`true`	Product, plan, and internal terms.

For noisy telephony audio, set pre_processing.speech_threshold to 0.8.

Subtitles & Captioning

Optimize for syncing text with the speaker.

Parameter	Recommended value	Why
`endpointing`	`0.3` (live) / `0.8` (post-production)	Lower = closer to speech; higher = cleaner blocks.
`maximum_duration_without_endpointing`	`5`	Keeps subtitle segments readable.
`messages_config.receive_partial_transcripts`	`true`	Shows words as they are spoken.
`language_config.languages`	Set explicitly	Avoids detection lag.

For post-production subtitles from a recording, use the Pre-recorded API with subtitles instead.

To enhance accuracy for any use case

Configure domain-specific words and phrases with Custom vocabulary or Custom spelling to capture context-specific terms (brand names, technical words, etc.).

Language set up

Set language_config.languages when the language is known. See Language detection for more details.

Code Switching

Enable language_config.code_switching when speakers mix languages in the same audio. See Code switching for more details.

Introduction

How to use Gladia

Speech-to-Text

Language

Audio Intelligence

Integrations

Developer tools

Limits & Specifications

Migrations

Recommended Parameters by Use Case

Voice Agents

Meeting Recorders

Call Centers

Subtitles & Captioning

To enhance accuracy for any use case

Language set up

Code Switching

​Voice Agents

​Meeting Recorders

​Call Centers

​Subtitles & Captioning

​To enhance accuracy for any use case

​Language set up

​Code Switching

Voice Agents

Meeting Recorders

Call Centers

Subtitles & Captioning

To enhance accuracy for any use case

Language set up

Code Switching