curl --request GET \
  --url https://api.example.com/v1/plans

{
  "data": {
    "items": [
      {
        "plan_id": "<string>",
        "display_name": "<string>",
        "price_inr": 123,
        "billing_cycle": "<string>",
        "tts_credits_per_cycle": 123,
        "asr_credits_per_cycle": 123
      }
    ]
  },
  "success": true
}