English conversations

Make every detail easy to follow.

Build an English conversation around the names, dates, and decisions your customer needs to understand. Match the voice to your service tone, then test the complete workflow on the channel your customers use.

Explore English templates Listen to voices

Build for the way people speak

What to try in English.

Use these checks when rehearsing your own workflow. Listen to the spoken result and inspect the action it produces.

Names and business vocabulary

Test customer names, place names, product terms, and abbreviations. Include a way to repeat or spell an uncertain detail.

Numbers and commitments

Rehearse dates, times, reference numbers, and prices. Confirm consequential details before a connected tool takes action.

The actual listening channel

Compare browser audio and phone calls with representative callers. Review interruptions, background noise, and when a person should take over.

Your rehearsal script

Would you prefer Tuesday morning or Thursday afternoon?

An original rehearsal line for checking whether two appointment choices remain easy to distinguish. This is a written test prompt, separate from the provider audio below.

Choose one customer task and service tone.
Try the voices with your own vocabulary and rules.
Review understood details, completed actions, and human handoffs.

Listen, compare, then build

English voice previews.

We generated each preview through our own provider accounts and serve it from this site. A complete Voice workflow also includes recognition, reasoning, tools, and turn-taking.

Search voice previews

8 voice previews

Alloy

OpenAI · tts-1

English

Availability: Default voice The voice our live speech service is configured to use.
API voice: alloy

Start here: this is the voice live conversations use today. Listen to whether the two appointment options stay easy to tell apart.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Sarah

ElevenLabs · eleven_flash_v2_5

English · American accent

Availability: Configured The voice set for this provider in our live speech service.
Described by ElevenLabs as: Mature, reassuring, confident
API voice: EXAVITQu4vr4xnSDxMaL

The ElevenLabs voice our speech service falls back to. Compare pacing and sentence endings with Alloy on the same line.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Neural2-D

Google Cloud Text-to-Speech · Neural2

English · US

Availability: Configured The voice set for this provider in our live speech service.
API voice: en-US-Neural2-D

Listen to emphasis on the times and the pause before the question. Shortlist against your own service tone.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Echo

OpenAI · tts-1

English

Availability: Supported by the integration Our integration accepts this voice. It is not yet selectable per workflow.
API voice: echo

Listen to the rhythm across the whole line and how the final question lands.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Fable

OpenAI · tts-1

English

Availability: Supported by the integration Our integration accepts this voice. It is not yet selectable per workflow.
API voice: fable

Pay attention to emphasis and transitions between phrases.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Onyx

OpenAI · tts-1

English

Availability: Supported by the integration Our integration accepts this voice. It is not yet selectable per workflow.
API voice: onyx

Compare the weight of this voice with the others on the same appointment line.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Nova

OpenAI · tts-1

English

Availability: Supported by the integration Our integration accepts this voice. It is not yet selectable per workflow.
API voice: nova

Compare clarity on the days and times, the details a caller must not mishear.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”

Shimmer

OpenAI · tts-1

English

Availability: Supported by the integration Our integration accepts this voice. It is not yet selectable per workflow.
API voice: shimmer

Listen to pacing and consider how much detail your customers need to hear.

AI-generated voiceReads: “Hi, thanks for calling. I can help you move your appointment. Would you prefer Tuesday morning or Thursday afternoon?”