Thinking Machines: Inkling

Thinking Machines' Inkling accepts text, image, and audio input and supports tool use and reasoning. Its context window is 524,288 tokens, with up to 471,859 completion tokens, so it can take in long documents or extended sessions and return lengthy outputs. Structured output support and open-weight availability are not specified, so confirm both before building around them. Pricing is $1.00 per million input tokens and $4.05 per million output tokens; output costs roughly four times as much as input, which matters for generation-heavy workloads. Its blended benchmark score of 39.4 rests on a single independent benchmark, an AI index score of 41.2, so its standing is thinly measured. Shortlist it if you need audio and image input combined with very long context and tool calling. Run your own evaluations before committing, since the published benchmark coverage is too narrow to settle how it compares.