OpenAI TTS-1 HD

OpenAI's higher-quality voices. By OpenAI, on GridPup at $36.23 per million characters, paid from your GridPup balance per request. No subscription.

Try it in the Playground Get an API key

Price

Made by: OpenAI
Price: $36.23 per million characters
Voices: 6
Languages: Read from the text

What it costs, roughly
A minute of speech (about 1,000 characters)	$0.036
A 10,000-word article read aloud (about 60,000 characters)	$2.17

Use it from your code

GridPup's API speaks OpenAI's format: use any OpenAI SDK with the base URL https://api.gridpup.com/v1/ai and a GridPup API key with Also use AI models. The answer tells you what it cost. More in the API docs.

from openai import OpenAI

client = OpenAI(base_url="https://api.gridpup.com/v1/ai", api_key="gp_live_…")

r = client.audio.speech.create(
    model="openai/tts-1-hd",
    input="Hello from GridPup.",
    voice="alloy",
)
open("hello.wav", "wb").write(r.content)

Questions

How much does OpenAI TTS-1 HD cost?: $36.23 per million characters, charged per request from your prepaid balance. You need a small balance to start ($1 for most models); there is no monthly fee.
Who runs it?: OpenAI made OpenAI TTS-1 HD. GridPup serves it through Cloudflare's AI Gateway, so you use it with one GridPup balance instead of an account with OpenAI.
Does it work with the OpenAI SDK?: Yes: set base_url to https://api.gridpup.com/v1/ai and the model to openai/tts-1-hd.

Similar text to speech models

Inworld TTS 1.5 miniInworld$18.11 per million characters
OpenAI TTS-1OpenAI$18.11 per million characters
Gemini 3.8 Flash-Lite TTSGoogle$24.15 per million characters
Inworld TTS-2Inworld$30.19 per million characters
Gemini 3.8 Flash TTSGoogle$36.23 per million characters
Inworld TTS 1.5 maxInworld$42.26 per million characters

All text to speech models and prices

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