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ActionOpenAIUpdated June 2026

How do I convert text to speech with OpenAI?

Short answer: You can generate speech (tts) in OpenAI by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the OpenAI Generate Speech (TTS) action to a workflow, map its 4 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

Generate Speech (TTS) in OpenAI — start free All 16 OpenAI actions
Generate Speech (TTS) in OpenAI — start free
Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

FieldTypeRequiredDescription
Text
input
stringRequiredText
Model
model
optionsRequiredModel. Options: TTS-1, TTS-1 HD
Voice
voice
optionsRequiredVoice. Options: Alloy, Echo, Fable, Onyx, Nova, Shimmer
Format
response_format
optionsOptionalFormat. Options: MP3, Opus, AAC, FLAC
Sample request
{
  "input": "{{trigger.input}}",
  "model": "{{trigger.model}}",
  "voice": "{{trigger.voice}}",
  "response_format": "{{trigger.response_format}}"
}
Returns
{
  "success": true
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Generate Speech (TTS).

Any of these apps can fire this action as part of a workflow.

Gmail → OpenAI
1 Gmail triggers
Slack → OpenAI
13 Slack triggers
Google Sheets → OpenAI
2 Google Sheets triggers
HubSpot → OpenAI
18 HubSpot triggers
FAQ

Questions about Generate Speech (TTS).

What does the Generate Speech (TTS) action do in OpenAI?
Converts text to speech audio using OpenAI's TTS models, returning audio bytes (mp3 by default). Supports multiple voices (alloy, echo, fable, onyx, nova, shimmer).
What inputs does Generate Speech (TTS) require?
Required: Text, Model, Voice. Every input accepts a static value or a variable from any upstream node in your workflow.
Can I use dynamic inputs from earlier workflow nodes?
Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.
What happens if OpenAI returns an error?
The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.
Does Generate Speech (TTS) support batch operations?
Yes. Run Generate Speech (TTS) inside a Loop node to process arrays. TinyCommand handles OpenAI's rate limits automatically so you don't have to throttle manually.
More actions

Other OpenAI actions.

Action
Analyze Image
Analyzes an image using GPT-4o vision, accepting a URL or base64-encoded image plus a text prompt. Use for OCR, chart extraction, alt-text generation, or visual QA.
Action
Chat Completion
Sends a message and gets a response from an OpenAI chat model (gpt-4o, gpt-4o-mini, o-series, etc.). The standard chat-completion action; supports system prompts, temperature, and stop sequences.
Action
Chat with Tools
Chat completion with tool/function calling enabled. The model may return tool_calls instead of (or in addition to) text; you execute them and feed results back as tool messages for the next turn.
Action
Create Batch
Submits a batch of OpenAI requests at a 50% cost discount with a 24-hour SLA. Requires an uploaded JSONL file id with one request per line. Perfect for bulk classification or embedding jobs.
Action
Create Embedding
Generates vector embeddings for text using text-embedding-3-small or text-embedding-3-large. The de-facto embeddings default for RAG and semantic search.
Action
Create Image (DALL-E)
Generates images from a text prompt using DALL-E (or gpt-image-1). Supports size, quality, and style controls; returns a URL or base64-encoded image.
Generate Speech (TTS) in OpenAI — start free