Inkling API

Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total. It is designed for general-purpose reasoning, coding, agentic and tool-use systems.
Context
1.0M tokens
Input
$1.3 / 1M
Output
$5.265 / 1M

How to use Inkling API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to thinkingmachines/inkling.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "thinkingmachines/inkling",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "thinkingmachines/inkling",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"thinkingmachines/inkling","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Inkling API Pricing

TypePrice
Input
$1.3 / 1M
Output
$5.265 / 1M
Cached input
$0.221 / 1M

Inkling is offered at a 50% limited-time discount, and OpenRouter documentation also shows a free tier for thinkingmachines/inkling with 200 requests per day.

Inkling vs other models

ModelInputOutputContextBest for
Inkling
This page
$1.3 / 1M
$5.265 / 1M
1.0M tokens
Agentic workflows and structured output
$0.797732 / 1M
$1.980576 / 1M
524K tokens
Efficient open-weight multimodal reasoning

Start building with Inkling

Get API Key
1000+ models, one API.