Thinking Machines is offering Inkling for free on OpenRouter for a limited time.

Thinking Machines will make Inkling available for free for several weeks while it's available on OpenRouter, but only for use initiated via Agent harness.

The company stated that it will use the data from the unlinked accounts to research and improve agent capabilities, therefore this is a temporary evaluation arrangement and not a permanent free tier.

refer to:Thinking Machines Lab