{
	"model_id": "thinkingmachines/inkling",
	"provider_id": "thinkingmachines",
	"name": "Inkling",
	"description": "Inkling is Thinking Machines' open-weights hybrid reasoning model, built on a mixture-of-experts architecture. It reasons by default, exposing its chain-of-thought as leading thinking content blocks, with reasoning effort tunable via a Tinker-specific output_config.effort parameter. Available through Tinker's beta Anthropic Messages-compatible endpoint alongside tool use, streaming, and multi-turn conversations. Currently intended for low-traffic testing and internal use rather than high-throughput production deployments; prompt caching, citations, and audio input are not supported through this endpoint.",
	"task": "Text Generation",
	"tags": [
		"LLM",
		"Reasoning",
		"Coding",
		"Agentic",
		"Open Source",
		"Tool Use",
		"MoE"
	],
	"context_length": 64000,
	"max_output_tokens": null,
	"schema_version": "1.0.0",
	"pricing": {
		"Input tokens (per 1M)": 1.87,
		"Output tokens (per 1M)": 4.68,
		"Cached input tokens (per 1M)": 0.374,
		"Cache creation tokens (per 1M)": 1.87
	},
	"examples": [
		{
			"name": "Simple Question",
			"description": "Basic message request",
			"input": {
				"max_tokens": 512,
				"messages": [
					{
						"content": "The capital of France is",
						"role": "user"
					}
				]
			},
			"output": {
				"text": "Paris."
			},
			"raw_response": {
				"id": "msg_922ec1780752447c802ec60be3dabfd6",
				"type": "message",
				"role": "assistant",
				"content": [
					{
						"type": "thinking",
						"thinking": "The user is asking a simple factual question: \"The capital of France is\". The answer is Paris. I should provide the answer clearly and concisely.",
						"signature": ""
					},
					{
						"type": "text",
						"text": "Paris."
					}
				],
				"model": "thinkingmachines/Inkling",
				"stop_reason": "end_turn",
				"usage": {
					"input_tokens": 0,
					"output_tokens": 41,
					"cache_creation_input_tokens": 19,
					"cache_read_input_tokens": 0
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'thinkingmachines/inkling',\n  { max_tokens: 512, messages: [{ content: 'The capital of France is', role: 'user' }] },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/messages \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"thinkingmachines/inkling\",\n  \"max_tokens\": 512,\n  \"messages\": [\n    {\n      \"content\": \"The capital of France is\",\n      \"role\": \"user\"\n    }\n  ]\n}'"
				}
			]
		},
		{
			"name": "Tool Use",
			"description": "Tool use round-trip: the model requests a tool call, then answers using the tool_result supplied in a follow-up user message",
			"input": {
				"max_tokens": 1024,
				"messages": [
					{
						"content": "What's the weather in Paris?",
						"role": "user"
					},
					{
						"content": [
							{
								"id": "toolu_01A1x1x1x1x1x1x1x1x1x1x1",
								"input": {
									"city": "Paris"
								},
								"name": "get_weather",
								"type": "tool_use"
							}
						],
						"role": "assistant"
					},
					{
						"content": [
							{
								"content": "Sunny, 22\u00b0C",
								"tool_use_id": "toolu_01A1x1x1x1x1x1x1x1x1x1x1",
								"type": "tool_result"
							}
						],
						"role": "user"
					}
				],
				"tools": [
					{
						"description": "Get the current weather for a city.",
						"input_schema": {
							"properties": {
								"city": {
									"type": "string"
								}
							},
							"required": [
								"city"
							],
							"type": "object"
						},
						"name": "get_weather"
					}
				]
			},
			"output": {
				"text": "The weather in Paris is sunny with a temperature of 22\u00b0C. Enjoy the nice weather!"
			},
			"raw_response": {
				"id": "msg_ddfc346862fc4a3f8afc1f8f53e1d932",
				"type": "message",
				"role": "assistant",
				"content": [
					{
						"type": "thinking",
						"thinking": "The user asked for the weather in Paris and the function returned \"Sunny, 22\u00b0C\". I should provide a clear, friendly answer with this information.",
						"signature": ""
					},
					{
						"type": "text",
						"text": "The weather in Paris is sunny with a temperature of 22\u00b0C. Enjoy the nice weather!"
					}
				],
				"model": "thinkingmachines/Inkling",
				"stop_reason": "end_turn",
				"usage": {
					"input_tokens": 0,
					"output_tokens": 57,
					"cache_creation_input_tokens": 95,
					"cache_read_input_tokens": 0
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'thinkingmachines/inkling',\n  {\n    max_tokens: 1024,\n    messages: [\n      { content: \"What's the weather in Paris?\", role: 'user' },\n      {\n        content: [\n          {\n            id: 'toolu_01A1x1x1x1x1x1x1x1x1x1x1',\n            input: { city: 'Paris' },\n            name: 'get_weather',\n            type: 'tool_use',\n          },\n        ],\n        role: 'assistant',\n      },\n      {\n        content: [\n          {\n            content: 'Sunny, 22\u00b0C',\n            tool_use_id: 'toolu_01A1x1x1x1x1x1x1x1x1x1x1',\n            type: 'tool_result',\n          },\n        ],\n        role: 'user',\n      },\n    ],\n    tools: [\n      {\n        description: 'Get the current weather for a city.',\n        input_schema: {\n          properties: { city: { type: 'string' } },\n          required: ['city'],\n          type: 'object',\n        },\n        name: 'get_weather',\n      },\n    ],\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/messages \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"thinkingmachines/inkling\",\n  \"max_tokens\": 1024,\n  \"messages\": [\n    {\n      \"content\": \"What'\\''s the weather in Paris?\",\n      \"role\": \"user\"\n    },\n    {\n      \"content\": [\n        {\n          \"id\": \"toolu_01A1x1x1x1x1x1x1x1x1x1x1\",\n          \"input\": {\n            \"city\": \"Paris\"\n          },\n          \"name\": \"get_weather\",\n          \"type\": \"tool_use\"\n        }\n      ],\n      \"role\": \"assistant\"\n    },\n    {\n      \"content\": [\n        {\n          \"content\": \"Sunny, 22\u00b0C\",\n          \"tool_use_id\": \"toolu_01A1x1x1x1x1x1x1x1x1x1x1\",\n          \"type\": \"tool_result\"\n        }\n      ],\n      \"role\": \"user\"\n    }\n  ],\n  \"tools\": [\n    {\n      \"description\": \"Get the current weather for a city.\",\n      \"input_schema\": {\n        \"properties\": {\n          \"city\": {\n            \"type\": \"string\"\n          }\n        },\n        \"required\": [\n          \"city\"\n        ],\n        \"type\": \"object\"\n      },\n      \"name\": \"get_weather\"\n    }\n  ]\n}'"
				}
			]
		},
		{
			"name": "Extended Thinking Effort",
			"description": "Controlling reasoning effort via Tinker's output_config.effort extension. The model's chain-of-thought is returned as a leading thinking content block before the answer.",
			"input": {
				"max_tokens": 1024,
				"messages": [
					{
						"content": "What is 17 * 23?",
						"role": "user"
					}
				],
				"output_config": {
					"effort": "high"
				}
			},
			"output": {
				"text": "17 \u00d7 23 = **391**\n\n(Breakdown: 17 \u00d7 20 = 340, plus 17 \u00d7 3 = 51; 340 + 51 = 391)"
			},
			"raw_response": {
				"id": "msg_a7e845f498bd44e9b1d63dca8b104a2e",
				"type": "message",
				"role": "assistant",
				"content": [
					{
						"type": "thinking",
						"thinking": "The user is asking for the product of 17 and 23. Let me calculate that.\n\n17 * 23 = ?\n\nI can compute this as:\n17 * 20 = 340\n17 * 3 = 51\n340 + 51 = 391\n\nAlternatively:\n17 * 23 = 17 * (25 - 2) = 425 - 34 = 391\nOr (20 - 3) * 23 = 460 - 69 = 391\n\nSo the answer is 391.",
						"signature": ""
					},
					{
						"type": "text",
						"text": "17 \u00d7 23 = **391**\n\n(Breakdown: 17 \u00d7 20 = 340, plus 17 \u00d7 3 = 51; 340 + 51 = 391)"
					}
				],
				"model": "thinkingmachines/Inkling",
				"stop_reason": "end_turn",
				"usage": {
					"input_tokens": 0,
					"output_tokens": 155,
					"cache_creation_input_tokens": 22,
					"cache_read_input_tokens": 0
				}
			},
			"code_snippets": [
				{
					"label": "typescript",
					"language": "typescript",
					"code": "const response = await env.AI.run(\n  'thinkingmachines/inkling',\n  {\n    max_tokens: 1024,\n    messages: [{ content: 'What is 17 * 23?', role: 'user' }],\n    output_config: { effort: 'high' },\n  },\n)\nconsole.log(response)"
				},
				{
					"label": "curl",
					"language": "bash",
					"code": "curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/messages \\\n  --header \"Authorization: Bearer $CLOUDFLARE_API_TOKEN\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\n  \"model\": \"thinkingmachines/inkling\",\n  \"max_tokens\": 1024,\n  \"messages\": [\n    {\n      \"content\": \"What is 17 * 23?\",\n      \"role\": \"user\"\n    }\n  ],\n  \"output_config\": {\n    \"effort\": \"high\"\n  }\n}'"
				}
			]
		}
	],
	"default_example": null,
	"code_snippets": [],
	"supports_async": false,
	"zdr": false,
	"zdr_comment": null,
	"external_info": "https://huggingface.co/thinkingmachines/Inkling",
	"terms": null,
	"cover_image_url": null,
	"metadata": {
		"Architecture": "Mixture-of-Experts (MoE)",
		"Thinking": "Yes"
	},
	"request_formats": [
		"anthropic-messages"
	],
	"providers": null,
	"provider_details": [
		{
			"id": "thinkingmachines",
			"pricing": {
				"input_tokens": 1.87,
				"output_tokens": 4.68,
				"input_cached_tokens": 0.374,
				"input_cache_creation_tokens": 1.87
			}
		}
	],
	"banner": null,
	"created_at": "2026-07-22 15:35:05",
	"schema": {
		"input": {
			"$schema": "https://json-schema.org/draft/2020-12/schema",
			"type": "object",
			"properties": {
				"messages": {
					"type": "array",
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}