OpenAI text-to-speech model with steerable delivery via instructions. Generates speech via the /v1/audio/speech endpoint.
Vichar routes requests to the best providers that are able to handle your prompt size and parameters.
OpenAI text-to-speech model with steerable delivery via instructions. Generates speech via the /v1/audio/speech endpoint. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for GPT-4o Mini TTS on LLM Gateway starts at $0.60 per million input tokens and $12.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
GPT-4o Mini TTS supports a context window of up to 2,000 tokens on its largest provider deployment.
GPT-4o Mini TTS is served by OpenAI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
No. GPT-4o Mini TTS does not currently support tool calling or structured JSON outputs through LLM Gateway.
GPT-4o Mini TTS was released on March 20, 2025.
GPT-6 Luna
1,050,000 context$0.10 in / $0.50 out per 1M
GPT-6 Sol
1,050,000 context$2.00 in / $10.00 out per 1M
GPT Image 2.5 Flare
$5.00 in / $0.00 out per 1M
GPT Image 2.5 Sunburst
$5.00 in / $0.00 out per 1M
GPT-6 Astra
1,050,000 context$10.00 in / $50.00 out per 1M
GPT Transcribe
$0.00 in / $0.00 out per 1M