How is Inkling Thinking billed?

Input is $1.30 and output is $5.26 per million tokens; cached input is $0.221. The charge for every request is listed in Usage Logs in the console.

How long is the context window?

1.04M tokens. In a long conversation every turn is billed for the full input, so keep the history under control.

Does it support streaming?

Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.

Thinking Machines: Inkling Thinking

inkling:thinking

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Inkling Thinking costs $1.30 per million input tokens and $5.26 per million output tokens, supports 1.04M context, and is available through the OpenAI-compatible API.

The thinking version of Thinking Machines' 975B-parameter open-weights Mixture-of-Experts generalist with 41B active parameters. It reasons natively over text, images, and audio, and is built for agentic coding, tool use, detailed instruction following, long-context work, and controllable thinking effort.

Modalities

Text + Image + Audio → Text

Input / output price

$1.30 / $5.26 per 1M

Context

1.04M · max output 33K

Capabilities

ReasoningVisionTool callingLong contextOpen weights

Pricing

Billed per token actually used and deducted from your credits.

Item	USD per 1M tokens
Input	$1.30
Output	$5.26
Cached input	$0.221

Calculator

Drag the sliders to estimate what this model will cost.

Input per request 3K tokensOutput per request 800 tokensRequests per day 500Cached input 0%(higher with long chats or a fixed system prompt)

Per request: $0.00811
Per day: $4.06
Per month (30 days): $121.68

Inkling Thinking: input $1.3/M · output $5.265/M · cached input $0.221/M

Request with these settings

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "inkling:thinking", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to inkling:thinking.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "inkling:thinking",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is Inkling Thinking billed?: Input is $1.30 and output is $5.26 per million tokens; cached input is $0.221. The charge for every request is listed in Usage Logs in the console.
How long is the context window?: 1.04M tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?: Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.

Pricing

Calculator

Code samples

Parameters

Related models

FAQ