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Model details

Inkling Small (free)

Inkling Small sits inside the broader "ling" family of models and is positioned as the lighter-weight option for multimodal work. It is described as an open-weight mixture-of-experts design, activating a much smaller slice of its capacity per token while keeping a large total parameter pool, which is the classic efficiency story for MoE architectures: lower inference cost than a dense model of the same total size, while preserving the reasoning breadth of a much larger network. The release emphasizes an open-weights posture, signaling that the model can be self-hosted, fine-tuned, or inspected by downstream teams rather than treated as a closed API-only system.

Practically, the model is aimed at developers and researchers who need a flexible multimodal workhorse for text and image understanding without committing to a heavyweight flagship. Its large context window lets it handle long documents, extended image-plus-text sessions, and multi-turn reasoning chains in a single prompt, and the MoE layout keeps each forward pass comparatively inexpensive in active compute. The fit is strongest for prototyping, evaluation pipelines, and lightweight production workloads where open weights and free access matter more than bleeding-edge benchmark leadership; heavier, frontier-grade tasks would typically call for a larger sibling or a denser model from a different family.

OpenRouterthinkingmachines/inkling-small:freeling

Quick Info

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Provider
OpenRouter
Model key
thinkingmachines/inkling-small:free
Release date
Jul 30, 2026
Last updated
Jul 30, 2026
Input modalities
Output modalities
Capabilities

Cost

A provider subscription or plan supersedes token-based pricing for this model.

Limits

Output tokens
262,144 tokens
Context window
1,048,576 tokens

Latest news about Inkling Small (free)

OpenRouter

CoverageBenchmark

A third-party benchmark leaderboard entry explicitly tracks the OpenRouter-hosted `thinkingmachines/inkling-small:free` endpoint, last tested on September 19, 2026. The page documents a 0% pass rate across six evaluation categories — code generation, context recall, JSON output, ping, reasoning, and throughput — meanin The same leaderboard page records that Inkling Small (free) exposes a 1,000,000-token context window and supports tool and function calling, though those capabilities could not be validated because of the universal test failures. The entry is hosted under EyesInAI's openrouter slug path and frames the model as propriet

OpenRouter

CoveragePreview

The Hugging Face papers page for arXiv 2609.10715 ("NCP-ArchPreview Technical Report: Moving towards Latent Space Language Models through Next Concept Prediction," submitted Sep 11, 2026 by the NCP Team / Shanghai AI Laboratory) explicitly states that the abstract was "Generated by thinkingmachines/Inkling-Small." This As supplied, the page does not provide benchmarks, architecture details, release notes, pricing, or API information for Inkling Small itself; the underlying paper describes an 8.9B-parameter latent-space language model (NCP-ArchPreview) trained on 5.73T tokens of Dolma-3 by a different team. The relevance to the subjec

OpenRouter

CoverageRelease Notes

A third-party directories changelog dated 2026-09-03 explicitly lists "Inkling Small (free)" as a distinct entry alongside the paid "Inkling Small" variant, attributing both to Thinking Machines Lab. The entry describes the model as an open-weight multimodal mixture-of-experts with 12B active parameters out of 276B tot No benchmark scores, API changes, or developer-tooling updates accompany the changelog entry — the evidence is limited to a directory listing with truncated description. Notably, the paid "Inkling Small" and "Inkling Small (free)" entries share identical architectural descriptions (MoE, 12B/276B, multimodal), and the e

OpenRouter

Official sourceBenchmark

Thinking Machines Lab's Inkling Small is now offered as a free endpoint on OpenRouter, available to developers through the openrouter.ai model page. Per the listing, Inkling Small is an open-weight multimodal mixture-of-experts model with 12B active parameters out of 276B total, a 1M-token context window, and a release Developers opting for the free tier should note meaningful usage constraints: the endpoint is restricted to agentic harnesses, and prompts and outputs are logged and used to improve Thinking Machines Lab's models, products, and services under the TML Free Research API Terms of Service, with logged data disassociated fr

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