Inworld TTS 1.5 mini

Inworld's quick voices, built for games and agents. By Inworld, on GridPup at $18.11 per million characters, paid from your GridPup balance per request. No subscription.

Try it in the Playground Get an API key

Price

Made by: Inworld
Price: $18.11 per million characters
Voices: 14
Languages: Read from the text

What it costs, roughly
A minute of speech (about 1,000 characters)	$0.018
A 10,000-word article read aloud (about 60,000 characters)	$1.09

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="inworld/tts-1.5-mini",
    input="Hello from GridPup.",
    voice="Ashley",
)
open("hello.wav", "wb").write(r.content)

Questions

How much does Inworld TTS 1.5 mini cost?: $18.11 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?: Inworld made Inworld TTS 1.5 mini. GridPup serves it through Cloudflare's AI Gateway, so you use it with one GridPup balance instead of an account with Inworld.
Does it work with the OpenAI SDK?: Yes: set base_url to https://api.gridpup.com/v1/ai and the model to inworld/tts-1.5-mini.

Similar text to speech models

MeloTTSMyShellabout $0.25 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
OpenAI TTS-1 HDOpenAI$36.23 per million characters

All text to speech models and prices

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