{
	"model_id": "unbiased/pareto",
	"provider_id": "unbiased",
	"name": "Pareto",
	"description": "Pareto is Unbiased's blended AI model. It engages multiple language models in parallel for each request, synthesizes one answer, and supports text and vision inputs through a single API response.",
	"task": "Text Generation",
	"tags": [
		"LLM",
		"Blended Model",
		"Reasoning",
		"Coding",
		"Vision"
	],
	"context_length": null,
	"max_output_tokens": null,
	"schema_version": "1.0.0",
	"pricing": {
		"Input tokens (per 1M)": 2.5,
		"Cached input tokens (per 1M)": 0.25,
		"Output tokens (per 1M)": 7.5
	},
	"examples": [
		{
			"name": "Simple Question",
			"description": "Ask Pareto for a concise answer.",
			"input": {
				"messages": [
					{
						"content": "What is the capital of France? Answer in one word.",
						"role": "user"
					}
				],
				"max_tokens": 16
			},
			"output": {
				"text": "Paris"
			},
			"raw_response": {
				"id": "chatcmpl-mu5ww8tss0mj6ofw",
				"object": "chat.completion",
				"model": "union-alpha",
				"choices": [
					{
						"index": 0,
						"message": {
							"role": "assistant",
							"content": "Paris"
						},
						"finish_reason": "stop"
					}
				],
				"usage": {
					"prompt_tokens": 11,
					"completion_tokens": 5,
					"total_tokens": 16,
					"prompt_tokens_details": {
						"cached_tokens": 0
					},
					"cost": 0.000045
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'unbiased/pareto',\n  {\n    messages: [{ content: 'What is the capital of France? Answer in one word.', role: 'user' }],\n    max_tokens: 16,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"unbiased/pareto\",\n  \"messages\": [\n    {\n      \"content\": \"What is the capital of France? Answer in one word.\",\n      \"role\": \"user\"\n    }\n  ],\n  \"max_tokens\": 16\n}'"
				}
			]
		},
		{
			"name": "System Guidance",
			"description": "Set a helpful system role before asking a question.",
			"input": {
				"messages": [
					{
						"content": "You explain technical topics in plain language.",
						"role": "system"
					},
					{
						"content": "What is an API? Explain it in two sentences.",
						"role": "user"
					}
				],
				"max_tokens": 64
			},
			"output": {
				"text": "An API (Application Programming Interface) is a set of rules that lets one software program request information or actions from another. For example, a weather app uses an API to get forecasts from a weather service."
			},
			"raw_response": {
				"id": "chatcmpl-mu5wwcpm6hxi7lsb",
				"object": "chat.completion",
				"model": "union-alpha",
				"choices": [
					{
						"index": 0,
						"message": {
							"role": "assistant",
							"content": "An API (Application Programming Interface) is a set of rules that lets one software program request information or actions from another. For example, a weather app uses an API to get forecasts from a weather service."
						},
						"finish_reason": "stop"
					}
				],
				"usage": {
					"prompt_tokens": 19,
					"completion_tokens": 45,
					"total_tokens": 64,
					"prompt_tokens_details": {
						"cached_tokens": 0
					},
					"cost": 0.000305
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'unbiased/pareto',\n  {\n    messages: [\n      { content: 'You explain technical topics in plain language.', role: 'system' },\n      { content: 'What is an API? Explain it in two sentences.', role: 'user' },\n    ],\n    max_tokens: 64,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"unbiased/pareto\",\n  \"messages\": [\n    {\n      \"content\": \"You explain technical topics in plain language.\",\n      \"role\": \"system\"\n    },\n    {\n      \"content\": \"What is an API? Explain it in two sentences.\",\n      \"role\": \"user\"\n    }\n  ],\n  \"max_tokens\": 64\n}'"
				}
			]
		},
		{
			"name": "Coding Example",
			"description": "Ask for a short coding example.",
			"input": {
				"messages": [
					{
						"content": "Write a JavaScript function that reverses a string. Include one example call.",
						"role": "user"
					}
				],
				"max_tokens": 128
			},
			"output": {
				"text": "```javascript\nfunction reverseString(str) {\n  return Array.from(str).reverse().join(\"\");\n}\n\nconsole.log(reverseString(\"Hello\")); // \"olleH\"\n```"
			},
			"raw_response": {
				"id": "chatcmpl-mu5wwj1mqcjfe7xb",
				"object": "chat.completion",
				"model": "union-alpha",
				"choices": [
					{
						"index": 0,
						"message": {
							"role": "assistant",
							"content": "```javascript\nfunction reverseString(str) {\n  return Array.from(str).reverse().join(\"\");\n}\n\nconsole.log(reverseString(\"Hello\")); // \"olleH\"\n```"
						},
						"finish_reason": "stop"
					}
				],
				"usage": {
					"prompt_tokens": 14,
					"completion_tokens": 37,
					"total_tokens": 51,
					"prompt_tokens_details": {
						"cached_tokens": 0
					},
					"cost": 0.00024875
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'unbiased/pareto',\n  {\n    messages: [\n      {\n        content: 'Write a JavaScript function that reverses a string. Include one example call.',\n        role: 'user',\n      },\n    ],\n    max_tokens: 128,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"unbiased/pareto\",\n  \"messages\": [\n    {\n      \"content\": \"Write a JavaScript function that reverses a string. Include one example call.\",\n      \"role\": \"user\"\n    }\n  ],\n  \"max_tokens\": 128\n}'"
				}
			]
		},
		{
			"name": "Follow-up Conversation",
			"description": "Continue a short conversation with prior assistant context.",
			"input": {
				"messages": [
					{
						"content": "I am planning a weekend trip to a coastal city.",
						"role": "user"
					},
					{
						"content": "Consider walkable neighborhoods, local food, and a nearby beach.",
						"role": "assistant"
					},
					{
						"content": "What should I prioritize when choosing where to stay?",
						"role": "user"
					}
				],
				"max_tokens": 96
			},
			"output": {
				"text": "For a weekend trip, **prioritize location over extra amenities**\u2014less time in transit means more time enjoying the city.\n\n- **Close to your main plans:** Stay near the beach for a beach-focused trip, or near restaurants and sights if you\u2019re more interested in exploring.\n- **Easy transportation:** Check airport or station connections, public transit, and parking costs if you\u2019re driving.\n- **Comfort and quiet:** Recent reviews can reveal street noise, cleanliness issues"
			},
			"raw_response": {
				"id": "chatcmpl-mu5wwqlruoazrxij",
				"object": "chat.completion",
				"model": "union-alpha",
				"choices": [
					{
						"index": 0,
						"message": {
							"role": "assistant",
							"content": "For a weekend trip, **prioritize location over extra amenities**\u2014less time in transit means more time enjoying the city.\n\n- **Close to your main plans:** Stay near the beach for a beach-focused trip, or near restaurants and sights if you\u2019re more interested in exploring.\n- **Easy transportation:** Check airport or station connections, public transit, and parking costs if you\u2019re driving.\n- **Comfort and quiet:** Recent reviews can reveal street noise, cleanliness issues"
						},
						"finish_reason": "length"
					}
				],
				"usage": {
					"prompt_tokens": 43,
					"completion_tokens": 96,
					"total_tokens": 139,
					"prompt_tokens_details": {
						"cached_tokens": 0
					},
					"cost": 0.00065375
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'unbiased/pareto',\n  {\n    messages: [\n      { content: 'I am planning a weekend trip to a coastal city.', role: 'user' },\n      {\n        content: 'Consider walkable neighborhoods, local food, and a nearby beach.',\n        role: 'assistant',\n      },\n      { content: 'What should I prioritize when choosing where to stay?', role: 'user' },\n    ],\n    max_tokens: 96,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"unbiased/pareto\",\n  \"messages\": [\n    {\n      \"content\": \"I am planning a weekend trip to a coastal city.\",\n      \"role\": \"user\"\n    },\n    {\n      \"content\": \"Consider walkable neighborhoods, local food, and a nearby beach.\",\n      \"role\": \"assistant\"\n    },\n    {\n      \"content\": \"What should I prioritize when choosing where to stay?\",\n      \"role\": \"user\"\n    }\n  ],\n  \"max_tokens\": 96\n}'"
				}
			]
		},
		{
			"name": "Creative Writing",
			"description": "Generate a compact piece of creative writing.",
			"input": {
				"messages": [
					{
						"content": "Write a four-line poem about finding light after a difficult day.",
						"role": "user"
					}
				],
				"max_tokens": 96
			},
			"output": {
				"text": "The day lay heavy, stitched with shades of gray,\nUntil one star shone through the frayed dusk\u2019s seam.\nI set my burdens down beside the way,\nAnd let its little light rekindle dream."
			},
			"raw_response": {
				"id": "chatcmpl-mu5wx6hq2jpgslxe",
				"object": "chat.completion",
				"model": "union-alpha",
				"choices": [
					{
						"index": 0,
						"message": {
							"role": "assistant",
							"content": "The day lay heavy, stitched with shades of gray,\nUntil one star shone through the frayed dusk\u2019s seam.\nI set my burdens down beside the way,\nAnd let its little light rekindle dream."
						},
						"finish_reason": "stop"
					}
				],
				"usage": {
					"prompt_tokens": 12,
					"completion_tokens": 46,
					"total_tokens": 58,
					"prompt_tokens_details": {
						"cached_tokens": 0
					},
					"cost": 0.0003025
				},
				"gatewayMetadata": {
					"keySource": "Unified"
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'unbiased/pareto',\n  {\n    messages: [\n      { content: 'Write a four-line poem about finding light after a difficult day.', role: 'user' },\n    ],\n    max_tokens: 96,\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"unbiased/pareto\",\n  \"messages\": [\n    {\n      \"content\": \"Write a four-line poem about finding light after a difficult day.\",\n      \"role\": \"user\"\n    }\n  ],\n  \"max_tokens\": 96\n}'"
				}
			]
		}
	],
	"default_example": null,
	"code_snippets": [],
	"supports_async": false,
	"zdr": true,
	"zdr_comment": null,
	"external_info": "https://unbiased.ai/model-card/",
	"terms": "https://unbiased.ai/terms/",
	"cover_image_url": "https://pub-26f1392c1b674324be6786695bd72257.r2.dev/unbiased/pareto.png",
	"metadata": {
		"Architecture": "Blended model",
		"Modalities": "Text and vision",
		"Provider": "Unbiased",
		"fedrampAvailable": "true"
	},
	"request_formats": [
		"chat-completions"
	],
	"providers": null,
	"provider_details": [
		{
			"id": "unbiased",
			"pricing": {
				"input_tokens": 2.5,
				"input_cached_tokens": 0.25,
				"output_tokens": 7.5
			}
		}
	],
	"banner": null,
	"created_at": "2026-09-17 23:10:39",
	"schema": {
		"input": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"messages": {
					"type": "array",
					"items": {
						"type": "object",
						"properties": {
							"role": {
								"type": "string",
								"enum": [
									"system",
									"developer",
									"user",
									"assistant",
									"tool"
								]
							},
							"content": {
								"anyOf": [
									{
										"type": "string"
									},
									{
										"type": "null"
									},
									{
										"type": "array",
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						},
						"required": [
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						"additionalProperties": {}
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				"temperature": {
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					"minimum": 0,
					"maximum": 2
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				"max_tokens": {
					"type": "number",
					"exclusiveMinimum": 0
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				"max_completion_tokens": {
					"type": "number",
					"exclusiveMinimum": 0
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				"top_p": {
					"type": "number",
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				"frequency_penalty": {
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				"presence_penalty": {
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				"stream_options": {
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					"properties": {
						"include_usage": {
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					},
					"additionalProperties": false
				},
				"tools": {
					"type": "array",
					"items": {}
				},
				"tool_choice": {},
				"response_format": {},
				"modalities": {
					"type": "array",
					"items": {
						"type": "string",
						"enum": [
							"text",
							"audio"
						]
					}
				},
				"audio": {
					"type": "object",
					"properties": {
						"voice": {
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							"enum": [
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								"ash",
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								"echo",
								"sage",
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						"format": {
							"type": "string",
							"enum": [
								"wav",
								"mp3",
								"flac",
								"opus",
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							]
						}
					},
					"additionalProperties": false
				},
				"reasoning_effort": {
					"description": "Optional reasoning control; availability and accepted values are model-dependent.",
					"type": [
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				}
			},
			"required": [
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									"audio": {
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													"expires_at": {
														"type": "number"
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													"transcript": {
														"type": "string"
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