--- description: The 256K-context variant of Inkling, Thinking Machines' open-weights hybrid reasoning MoE model. Same hybrid reasoning, tool-use, and streaming support as the base model, with an extended context window for longer conversations and documents. Currently intended for low-traffic testing and internal use rather than high-throughput production deployments. title: Inkling 256K image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/llms.txt > Use this file to discover all available pages before exploring further. t # Inkling 256K Text Generation • thinkingmachines Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/ai/models/thinkingmachines/inkling-256k/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/) `thinkingmachines/inkling-256k` * Third-party The 256K-context variant of Inkling, Thinking Machines' open-weights hybrid reasoning MoE model. Same hybrid reasoning, tool-use, and streaming support as the base model, with an extended context window for longer conversations and documents. Currently intended for low-traffic testing and internal use rather than high-throughput production deployments. | Model Info | | | ------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------- | | Context Window[ ↗](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/workers-ai/platform/glossary/) | 262,144 tokens | | More information | [link ↗](https://huggingface.co/thinkingmachines/Inkling) | | Request formats | Anthropic Messages | | Pricing | [View pricing in the Cloudflare dashboard ↗](https://dash.cloudflare.com/?to=/:account/ai/models/thinkingmachines/inkling-256k) | ## Usage ```ts const response = await env.AI.run( 'thinkingmachines/inkling-256k', { max_tokens: 512, messages: [{ content: 'The capital of France is', role: 'user' }] }, ) console.log(response) ``` ```bash curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/messages \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "thinkingmachines/inkling-256k", "max_tokens": 512, "messages": [ { "content": "The capital of France is", "role": "user" } ] }' ``` The capital of France is **Paris**. ```json { "id": "msg_f3f0874570144f29add4272d4f07491d", "type": "message", "role": "assistant", "content": [ { "type": "thinking", "thinking": "The user is asking \"The capital of France is\". This is a straightforward factual question. The capital of France is Paris. I should provide the answer clearly and concisely.", "signature": "" }, { "type": "text", "text": "The capital of France is **Paris**." } ], "model": "thinkingmachines/Inkling:peft:262144", "stop_reason": "end_turn", "usage": { "input_tokens": 0, "output_tokens": 52, "cache_creation_input_tokens": 19, "cache_read_input_tokens": 0 } } ``` ## Examples **Tool Use** — Tool use round-trip: the model requests a tool call, then answers using the tool\_result supplied in a follow-up user message ```ts const response = await env.AI.run( 'thinkingmachines/inkling-256k', { max_tokens: 1024, messages: [ { content: "What's the weather in Paris?", role: 'user' }, { content: [ { id: 'toolu_01A1x1x1x1x1x1x1x1x1x1x1', input: { city: 'Paris' }, name: 'get_weather', type: 'tool_use', }, ], role: 'assistant', }, { content: [ { content: 'Sunny, 22°C', tool_use_id: 'toolu_01A1x1x1x1x1x1x1x1x1x1x1', type: 'tool_result', }, ], role: 'user', }, ], tools: [ { description: 'Get the current weather for a city.', input_schema: { properties: { city: { type: 'string' } }, required: ['city'], type: 'object', }, name: 'get_weather', }, ], }, ) console.log(response) ``` ```bash curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/messages \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "thinkingmachines/inkling-256k", "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°C", "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" } ] }' ``` The weather in Paris is sunny with a temperature of 22°C. ```json { "id": "msg_5711f240c8da46eeb462f8900281d087", "type": "message", "role": "assistant", "content": [ { "type": "thinking", "thinking": "The user asked for the weather in Paris. The function returned \"Sunny, 22°C\". I should provide a clear, concise answer.", "signature": "" }, { "type": "text", "text": "The weather in Paris is sunny with a temperature of 22°C." } ], "model": "thinkingmachines/Inkling:peft:262144", "stop_reason": "end_turn", "usage": { "input_tokens": 0, "output_tokens": 49, "cache_creation_input_tokens": 95, "cache_read_input_tokens": 0 } } ``` ## Parameters ▶messages\[\] `array`required max\_tokens `number`requiredexclusiveMinimum: 0 system `string` temperature `number`minimum: 0maximum: 1 top\_p `number`minimum: 0maximum: 1 top\_k `number`exclusiveMinimum: 0 stream `boolean` ▶metadata{} `object` id `string` type `string`const: message role `string`const: assistant ▶content\[\] `array` model `string` stop\_reason `string | null` ▶usage{} `object` ## API Schemas (Raw) Input Output Was this helpful? YesNo ## On this page [![](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/ai/models/thinkingmachines/inkling-256k/#page","headline":"Inkling 256K (thinkingmachines) · Cloudflare AI docs · Cloudflare AI docs","description":"The 256K-context variant of Inkling, Thinking Machines' open-weights hybrid reasoning MoE model. Same hybrid reasoning, tool-use, and streaming support as the base model, with an extended context window for longer conversations and documents. 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