const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    input: '<string>',
    voice: '<string>',
    provider: {
      order: ['<string>'],
      only: ['<string>'],
      ignore: ['<string>'],
      include_alpha: true,
      allow_fallbacks: true,
      require_parameters: true,
      required_execution_region: '<string>',
      required_data_region: '<string>',
      require_zero_data_retention: true,
      zdr: true,
      enforce_distillable_text: true,
      quantizations: ['<string>'],
      sort: '<string>',
      max_price: {prompt: 123, completion: 123, image: 123, audio: 123, request: 123},
      preferred_min_throughput: 123,
      preferred_max_latency: 123
    }
  })
};

fetch('https://api.phaseo.app/v1/audio/speech', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

"<string>"