Is there a free tier for TTS-1 HD?

No. You add credit and pay TTS-1 HD's list rate for each request — seats, projects, and API keys are free, and pay-as-you-go credit never expires.

Am I charged for failed requests?

No. A request that fails without returning a result is not billed. If a response fails part-way, the tokens already processed before the failure are charged.

Is TTS-1 HD included in Token Plans?

No. TTS-1 HD is pay-as-you-go only; Token Plans cover the other text models in the catalog.

Does TTS-1 HD support tool calling and vision?

TTS-1 HD takes text in and returns text.

Is it the real TTS-1 HD?

Yes. A request for tts-1-hd is answered by TTS-1 HD from OpenAI, billed at its published list price. Inferray never substitutes a different or smaller model.

OpenAIText to speechtts-1-hd

TTS-1 HD

TTS-1 HD for Speech generation.

Explore TTS-1 HD for Speech generation through the unified API. Supported interfaces and current availability are shown below.

Speech generation

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Model details

Context window: 4K tokens
Max output: —
Input: Text
Output: Audio
Capabilities: —
Interfaces: Speech generation

Pricing

Prices use the units shown below. No gateway fees. Usage, size and model options may affect the total.

TTS-1 HD pricing.
Metric	Price
/ 1M characters	$30

Why teams pick it

TTS-1 HD for Speech generation.

Call TTS-1 HD

TTS-1 HD answers on the API below — pick the one your code already speaks and just swap in your Inferray key.

/v1/audio/speechSpeech generation · openai SDK or plain HTTP

curl https://api.inferray.com/v1/audio/speech \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "tts-1-hd",
  "input": "Hello, welcome."
}' \
  --output speech.audio

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Questions about this model

Is there a free tier for TTS-1 HD?: No. You add credit and pay TTS-1 HD's list rate for each request — seats, projects, and API keys are free, and pay-as-you-go credit never expires.
Am I charged for failed requests?: No. A request that fails without returning a result is not billed. If a response fails part-way, the tokens already processed before the failure are charged.
Is TTS-1 HD included in Token Plans?: No. TTS-1 HD is pay-as-you-go only; Token Plans cover the other text models in the catalog.
Does TTS-1 HD support tool calling and vision?: TTS-1 HD takes text in and returns text.
Is it the real TTS-1 HD?: Yes. A request for tts-1-hd is answered by TTS-1 HD from OpenAI, billed at its published list price. Inferray never substitutes a different or smaller model.