{
	"model_id": "openai/tts-1",
	"provider_id": "openai",
	"name": "TTS-1",
	"description": "OpenAI's text-to-speech model optimized for real-time use with low latency.",
	"task": "Text-to-Speech",
	"tags": [
		"TTS",
		"Speech Synthesis"
	],
	"context_length": null,
	"max_output_tokens": null,
	"schema_version": "1.0.0",
	"pricing": {
		"Per character": 0.000015
	},
	"examples": [
		{
			"name": "Simple Speech",
			"description": "Generate speech with default voice and settings",
			"input": {
				"response_format": "mp3",
				"speed": 1,
				"text": "Hello! Welcome to Cloudflare AI Gateway. Let me show you what we can do.",
				"voice": "alloy"
			},
			"output": {
				"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/simple-speech.mp3"
			},
			"raw_response": {
				"gatewayMetadata": {
					"keySource": "Unified"
				},
				"result": {
					"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/simple-speech.mp3"
				},
				"state": "Completed"
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'openai/tts-1',\n  {\n    response_format: 'mp3',\n    speed: 1,\n    text: 'Hello! Welcome to Cloudflare AI Gateway. Let me show you what we can do.',\n    voice: 'alloy',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"openai/tts-1\",\n  \"input\": {\n    \"response_format\": \"mp3\",\n    \"speed\": 1,\n    \"text\": \"Hello! Welcome to Cloudflare AI Gateway. Let me show you what we can do.\",\n    \"voice\": \"alloy\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Different Voice",
			"description": "Use the Nova voice for a different tone",
			"input": {
				"response_format": "mp3",
				"speed": 1,
				"text": "The weather today is sunny with a high of 72 degrees. Perfect for a walk in the park.",
				"voice": "nova"
			},
			"output": {
				"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/different-voice.mp3"
			},
			"raw_response": {
				"gatewayMetadata": {
					"keySource": "Unified"
				},
				"result": {
					"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/different-voice.mp3"
				},
				"state": "Completed"
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'openai/tts-1',\n  {\n    response_format: 'mp3',\n    speed: 1,\n    text: 'The weather today is sunny with a high of 72 degrees. Perfect for a walk in the park.',\n    voice: 'nova',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"openai/tts-1\",\n  \"input\": {\n    \"response_format\": \"mp3\",\n    \"speed\": 1,\n    \"text\": \"The weather today is sunny with a high of 72 degrees. Perfect for a walk in the park.\",\n    \"voice\": \"nova\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Narration",
			"description": "Slower narration style with the Onyx voice",
			"input": {
				"response_format": "mp3",
				"speed": 0.85,
				"text": "In the beginning, the universe was a singularity of infinite density. Then, in a fraction of a second, it expanded into everything we know today.",
				"voice": "onyx"
			},
			"output": {
				"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/narration.mp3"
			},
			"raw_response": {
				"gatewayMetadata": {
					"keySource": "Unified"
				},
				"result": {
					"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/narration.mp3"
				},
				"state": "Completed"
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'openai/tts-1',\n  {\n    response_format: 'mp3',\n    speed: 0.85,\n    text: 'In the beginning, the universe was a singularity of infinite density. Then, in a fraction of a second, it expanded into everything we know today.',\n    voice: 'onyx',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"openai/tts-1\",\n  \"input\": {\n    \"response_format\": \"mp3\",\n    \"speed\": 0.85,\n    \"text\": \"In the beginning, the universe was a singularity of infinite density. Then, in a fraction of a second, it expanded into everything we know today.\",\n    \"voice\": \"onyx\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Echo Voice",
			"description": "Use the Echo voice for a deeper tone",
			"input": {
				"response_format": "mp3",
				"speed": 1,
				"text": "Welcome back to the podcast. Today we are going to talk about the future of artificial intelligence and its impact on creative work.",
				"voice": "echo"
			},
			"output": {
				"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/echo-voice.mp3"
			},
			"raw_response": {
				"gatewayMetadata": {
					"keySource": "Unified"
				},
				"result": {
					"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/echo-voice.mp3"
				},
				"state": "Completed"
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'openai/tts-1',\n  {\n    response_format: 'mp3',\n    speed: 1,\n    text: 'Welcome back to the podcast. Today we are going to talk about the future of artificial intelligence and its impact on creative work.',\n    voice: 'echo',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"openai/tts-1\",\n  \"input\": {\n    \"response_format\": \"mp3\",\n    \"speed\": 1,\n    \"text\": \"Welcome back to the podcast. Today we are going to talk about the future of artificial intelligence and its impact on creative work.\",\n    \"voice\": \"echo\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Fast Playback",
			"description": "Speed up speech for quick listening",
			"input": {
				"response_format": "mp3",
				"speed": 1.5,
				"text": "This is a fast-paced summary of the key findings from the quarterly report. Revenue is up fifteen percent, user growth exceeded expectations, and infrastructure costs remain stable.",
				"voice": "shimmer"
			},
			"output": {
				"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/fast-playback.mp3"
			},
			"raw_response": {
				"gatewayMetadata": {
					"keySource": "Unified"
				},
				"result": {
					"audio": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/openai__tts-1/fast-playback.mp3"
				},
				"state": "Completed"
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'openai/tts-1',\n  {\n    response_format: 'mp3',\n    speed: 1.5,\n    text: 'This is a fast-paced summary of the key findings from the quarterly report. Revenue is up fifteen percent, user growth exceeded expectations, and infrastructure costs remain stable.',\n    voice: 'shimmer',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"openai/tts-1\",\n  \"input\": {\n    \"response_format\": \"mp3\",\n    \"speed\": 1.5,\n    \"text\": \"This is a fast-paced summary of the key findings from the quarterly report. Revenue is up fifteen percent, user growth exceeded expectations, and infrastructure costs remain stable.\",\n    \"voice\": \"shimmer\"\n  }\n}'"
				}
			]
		}
	],
	"default_example": null,
	"code_snippets": [],
	"supports_async": false,
	"zdr": true,
	"zdr_comment": null,
	"external_info": "https://platform.openai.com/docs/guides/text-to-speech",
	"terms": "https://openai.com/policies/",
	"cover_image_url": "https://pub-26f1392c1b674324be6786695bd72257.r2.dev/openai/tts-1.png",
	"metadata": {
		"Voices": "alloy, echo, fable, onyx, nova, shimmer"
	},
	"request_formats": null,
	"providers": null,
	"provider_details": [
		{
			"id": "openai",
			"pricing": {
				"input_characters": 0.000015
			}
		}
	],
	"banner": null,
	"created_at": "2026-05-22 17:53:43",
	"schema": {
		"input": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"text": {
					"type": "string",
					"maxLength": 4096,
					"description": "The text to generate audio for. Maximum length is 4096 characters."
				},
				"voice": {
					"default": "alloy",
					"description": "The voice to use when generating the audio. Defaults to alloy.",
					"type": "string",
					"enum": [
						"alloy",
						"echo",
						"fable",
						"onyx",
						"nova",
						"shimmer"
					]
				},
				"response_format": {
					"default": "mp3",
					"description": "The output format for the audio. Supported formats are mp3, opus, wav, aac and flac.",
					"type": "string",
					"enum": [
						"mp3",
						"opus",
						"wav",
						"aac",
						"flac"
					]
				},
				"speed": {
					"default": 1,
					"description": "The speed of the generated audio. Select a value from 0.25 to 4.0. 1.0 is the default.",
					"type": "number",
					"minimum": 0.25,
					"maximum": 4
				}
			},
			"required": [
				"text",
				"voice",
				"response_format",
				"speed"
			],
			"additionalProperties": false
		},
		"output": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"audio": {
					"type": "string",
					"description": "URL to the generated audio file"
				}
			},
			"required": [
				"audio"
			],
			"additionalProperties": false
		}
	}
}