Using OpenAI Speech Skill to synthesize reusable voice from text

# Official OpenAI Curated Skill: speech This article introduces the OpenAI Agent Skills-powered speech skill that calls the OpenAI Audio API. It allows users to synthesize text into narration, product voiceovers, IVR audio and accessible reading audio via the built-in CLI. The article covers the installation method, configuration of the OPENAI_API_KEY, usage of the `speak` and `speak-batch` commands, default models and built-in voices, as well as limitations including single audio length, speech rate and custom voices.