> ## Documentation Index > Fetch the complete documentation index at: https://docs.pipeshub.com/llms.txt > Use this file to discover all available pages before exploring further. # OpenAI > Configure PipesHub to use OpenAI text-to-speech models # OpenAI Text to Speech Configuration OpenAI TTS Configuration Interface *The OpenAI TTS configuration screen in PipesHub where you'll enter your API Key, Model Name, Voice, and Audio Format* PipesHub allows you to integrate with OpenAI's text-to-speech models to enable voice output in AI workflows and agents. Once configured, PipesHub can convert AI-generated text responses into natural-sounding spoken audio using OpenAI's TTS models. ## Required Fields ### API Key \* The API Key is required to authenticate your requests to OpenAI's TTS services. **How to obtain an API Key:** 1. Log in to your [OpenAI account](https://platform.openai.com/api-keys) 2. Navigate to the API Keys section 3. Create a new secret key 4. Copy the key immediately (it will only be shown once) **Security Note:** Your API key should be kept secure and never shared publicly. PipesHub securely stores your API key and uses it only for authenticating requests to OpenAI. ### Model Name \* The Model Name field defines which OpenAI TTS model you want to use with PipesHub. **Available OpenAI TTS models:** * `tts-1` - Standard quality TTS model optimised for real-time, low-latency applications * `tts-1-hd` - Higher quality TTS model optimised for audio fidelity * `gpt-4o-mini-tts` - GPT-4o Mini powered TTS with natural, expressive speech **How to choose a model:** * For real-time voice output where speed matters, select `tts-1` * For higher audio quality, select `tts-1-hd` * For the most natural and expressive speech, select `gpt-4o-mini-tts` * Check OpenAI's [TTS documentation](https://platform.openai.com/docs/guides/text-to-speech) for the most up-to-date options ## Optional Fields ### Voice Select the default voice used for audio output. You can change this at any time by editing the configuration. **Available voices (default: Alloy):** * **Alloy** — balanced, neutral tone * **Echo** — warm, conversational tone * **Fable** — expressive, storytelling tone * **Onyx** — deep, authoritative tone * **Nova** — energetic, upbeat tone * **Shimmer** — clear, friendly tone ### Audio Format Select the output audio format for generated speech (default: MP3). **Available formats:** * **MP3** — widely compatible, good compression (default) * **Opus** — optimised for internet streaming, low latency * **AAC** — good quality with broad device compatibility * **FLAC** — lossless, highest quality, larger file size * **WAV** — uncompressed, broad compatibility ## Configuration Steps As shown in the image above: 1. Click **Configure** on the OpenAI provider card 2. Enter your OpenAI API Key in the designated field (marked with \*) 3. Specify your desired Model Name (marked with \*) 4. (Optional) Select your preferred **Voice** from the dropdown (default: Alloy) 5. (Optional) Select your preferred **Audio Format** (default: MP3) 6. (Optional) Set a **Model Friendly Name** — a human-readable label shown in the UI 7. Click **Add Model** to save and validate your credentials > Both the API Key and Model Name are required fields to successfully configure OpenAI TTS integration. ## Usage Considerations * Each TTS request will count against your OpenAI account's quota and billing * Different models have different pricing — check OpenAI's pricing page for details * Higher quality models (`tts-1-hd`) cost more per character than standard models * Longer texts require more tokens and cost proportionally more ## Troubleshooting * If you encounter authentication errors, verify your API key is correct and has not expired * Ensure your OpenAI account has billing set up * Check that the model name is spelled correctly (e.g. `tts-1`, not `TTS-1`) * Verify your account has access to the TTS API For additional support, refer to the [OpenAI TTS documentation](https://platform.openai.com/docs/guides/text-to-speech) or contact PipesHub support.