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OpenAI: GPT-4o Mini TTS

openai/gpt-4o-mini-tts-2025-12-15

Released Apr 18, 20264,096 context$0.60 per 1M characters

GPT-4o Mini TTS is OpenAI's cost-efficient text-to-speech model. It converts text input into natural-sounding audio output, supporting a variety of voices and tones.

Providers for GPT-4o Mini TTS

OpenRouter routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.

Performance for GPT-4o Mini TTS

Compare different providers across OpenRouter

Effective Pricing for GPT-4o Mini TTS

Actual cost per million tokens across providers over the past hour

Apps using GPT-4o Mini TTS

Top public apps this month

Recent activity on GPT-4o Mini TTS

Total usage per day on OpenRouter

Requests
38

Total number of API requests made to this model per day on OpenRouter.

Uptime stats for GPT-4o Mini TTS

Uptime stats for GPT-4o Mini TTS across all providers

Sample code and API for GPT-4o Mini TTS

OpenRouter normalizes requests and responses across providers for you.

OpenRouter provides a text-to-speech API that converts text into natural-sounding audio. Send text and a voice selection, and receive raw audio bytes in your chosen format.

The response is a raw audio stream (not JSON). The generation ID is returned in the X-Generation-Id response header for tracking.

Using third-party SDKs

For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.