{
	"model_id": "bytedance/seedance-2.0-fast",
	"provider_id": "bytedance",
	"name": "Seedance 2.0 Fast",
	"description": "Faster variant of ByteDance's Seedance 2.0 video model. Trades some quality for speed while sharing the same multimodal architecture. Supports text-to-video, image-to-video, native audio generation, multimodal references (images, videos, audio), video editing, and video extension.",
	"task": "Text-to-Video",
	"tags": [
		"Video Generation",
		"Image-to-Video",
		"Fast",
		"Multimodal"
	],
	"context_length": null,
	"max_output_tokens": null,
	"schema_version": "1.0.0",
	"pricing": {
		"@480p non-video input (per second)": 0.06,
		"@480p video input (per second)": 0.132,
		"@720p non-video input (per second)": 0.12,
		"@720p video input (per second)": 0.286,
		"Default (per second)": 0.12
	},
	"examples": [
		{
			"name": "Quick Video",
			"description": "Fast text-to-video with default settings",
			"input": {
				"prompt": "A golden retriever running through a field of sunflowers on a sunny day",
				"aspect_ratio": "16:9",
				"duration": 5,
				"resolution": "720p"
			},
			"output": {
				"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/quick-video.mp4"
			},
			"raw_response": {
				"state": "Completed",
				"result": {
					"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/quick-video.mp4"
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'bytedance/seedance-2.0-fast',\n  {\n    prompt: 'A golden retriever running through a field of sunflowers on a sunny day',\n    aspect_ratio: '16:9',\n    duration: 5,\n    resolution: '720p',\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 $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"bytedance/seedance-2.0-fast\",\n  \"input\": {\n    \"prompt\": \"A golden retriever running through a field of sunflowers on a sunny day\",\n    \"aspect_ratio\": \"16:9\",\n    \"duration\": 5,\n    \"resolution\": \"720p\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Portrait Video",
			"description": "Vertical video for social media",
			"input": {
				"prompt": "A barista pouring latte art in a cozy coffee shop, close-up with shallow depth of field",
				"aspect_ratio": "9:16",
				"duration": 5,
				"resolution": "720p"
			},
			"output": {
				"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/portrait-video.mp4"
			},
			"raw_response": {
				"state": "Completed",
				"result": {
					"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/portrait-video.mp4"
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'bytedance/seedance-2.0-fast',\n  {\n    prompt: 'A barista pouring latte art in a cozy coffee shop, close-up with shallow depth of field',\n    aspect_ratio: '9:16',\n    duration: 5,\n    resolution: '720p',\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"bytedance/seedance-2.0-fast\",\n  \"input\": {\n    \"prompt\": \"A barista pouring latte art in a cozy coffee shop, close-up with shallow depth of field\",\n    \"aspect_ratio\": \"9:16\",\n    \"duration\": 5,\n    \"resolution\": \"720p\"\n  }\n}'"
				}
			]
		},
		{
			"name": "Virtual Avatar Reference",
			"description": "Use a virtual character avatar from the trusted asset library",
			"input": {
				"image": "https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/r2v_tea_pic1.jpg",
				"prompt": "The scene gently animates with subtle motion",
				"aspect_ratio": "16:9",
				"duration": 5,
				"resolution": "720p",
				"use_virtual_avatar": true,
				"generate_audio": false
			},
			"output": {
				"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/virtual-avatar-reference.mp4"
			},
			"raw_response": {
				"state": "Completed",
				"result": {
					"video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0-fast/virtual-avatar-reference.mp4"
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'bytedance/seedance-2.0-fast',\n  {\n    image: 'https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/r2v_tea_pic1.jpg',\n    prompt: 'The scene gently animates with subtle motion',\n    aspect_ratio: '16:9',\n    duration: 5,\n    resolution: '720p',\n    use_virtual_avatar: true,\n    generate_audio: false,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"bytedance/seedance-2.0-fast\",\n  \"input\": {\n    \"image\": \"https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/r2v_tea_pic1.jpg\",\n    \"prompt\": \"The scene gently animates with subtle motion\",\n    \"aspect_ratio\": \"16:9\",\n    \"duration\": 5,\n    \"resolution\": \"720p\",\n    \"use_virtual_avatar\": true,\n    \"generate_audio\": false\n  }\n}'"
				}
			]
		}
	],
	"default_example": null,
	"code_snippets": [],
	"supports_async": false,
	"zdr": false,
	"zdr_comment": null,
	"external_info": "https://seed.bytedance.com/en/seedance",
	"terms": null,
	"cover_image_url": "https://pub-26f1392c1b674324be6786695bd72257.r2.dev/bytedance/seedance-2.0-fast.png",
	"metadata": {
		"Aspect Ratios": "16:9, 4:3, 1:1, 3:4, 9:16, 21:9, 9:21",
		"Max Duration": "12 seconds",
		"Native Audio": "Yes",
		"Resolutions": "480p, 720p"
	},
	"request_formats": null,
	"providers": null,
	"provider_details": [
		{
			"id": "bytedance",
			"pricing": {
				"480p_non_video_in": 0.06,
				"480p_video_in": 0.132,
				"720p_non_video_in": 0.12,
				"720p_video_in": 0.286,
				"default": 0.12
			}
		}
	],
	"banner": null,
	"created_at": "2026-05-22 17:53:04",
	"schema": {
		"input": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"prompt": {
					"type": "string",
					"maxLength": 10000,
					"description": "Text prompt describing the video to generate"
				},
				"image": {
					"description": "Reference image (HTTP(S) URL or base64 data URI) for image-to-video",
					"type": "string"
				},
				"reference_video": {
					"description": "Reference video (HTTP(S) URL or base64 data URI) for style/motion guidance",
					"type": "string"
				},
				"last_frame_image": {
					"description": "Reference image (HTTP(S) URL or base64 data URI) for last-frame guidance. Only works if an image start frame is also given.",
					"type": "string"
				},
				"reference_images": {
					"description": "Reference images (1-4, HTTP(S) URLs or base64 data URIs) to guide video generation for characters, avatars, clothing, or environments. Cannot be used with first/last frame images.",
					"maxItems": 4,
					"type": "array",
					"items": {
						"type": "string"
					}
				},
				"duration": {
					"default": 5,
					"description": "Video duration in seconds",
					"type": "integer",
					"minimum": 4,
					"maximum": 12
				},
				"resolution": {
					"default": "720p",
					"description": "Video resolution",
					"type": "string",
					"enum": [
						"480p",
						"720p"
					]
				},
				"aspect_ratio": {
					"default": "16:9",
					"description": "Video aspect ratio. Ignored if an image is used.",
					"type": "string",
					"enum": [
						"16:9",
						"4:3",
						"1:1",
						"3:4",
						"9:16",
						"21:9",
						"9:21"
					]
				},
				"fps": {
					"default": 24,
					"description": "Frame rate (frames per second)",
					"type": "number",
					"const": 24
				},
				"camera_fixed": {
					"default": false,
					"description": "Whether to fix camera position",
					"type": "boolean"
				},
				"generate_audio": {
					"description": "Whether to generate audio with the video",
					"type": "boolean"
				},
				"watermark": {
					"default": false,
					"description": "Whether to add a watermark to the output video",
					"type": "boolean"
				},
				"seed": {
					"description": "Random seed for reproducible generation",
					"type": "integer",
					"minimum": -9007199254740991,
					"maximum": 9007199254740991
				},
				"use_virtual_avatar": {
					"default": false,
					"description": "Route image reference inputs (image, reference_images, last_frame_image) through ByteDance's trusted virtual avatar asset library before generation. Intended for AI-generated/virtual character avatars that would otherwise be blocked by face or deepfake detection",
					"type": "boolean"
				}
			},
			"required": [
				"prompt",
				"duration",
				"resolution",
				"aspect_ratio",
				"fps",
				"camera_fixed",
				"watermark",
				"use_virtual_avatar"
			],
			"additionalProperties": false
		},
		"output": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"video": {
					"type": "string",
					"format": "uri",
					"description": "URL to the generated video"
				}
			},
			"required": [
				"video"
			],
			"additionalProperties": false
		}
	}
}