Thinking Machines: Inkling (free)

thinkingmachines/inkling:free · Thinking MachinesTokenizer lineage measured

Tokenizer lineage (measured): GPT
Evidence confidence: High
Declared tokenizer tag: Other
Entered catalogue: 17 July 2026
Last tested: Not yet measured
Measurement: Variant: inherits its base model’s measurement

Evidence

✓ inherited from thinkingmachines/inkling: a serving variant shares its base model's tokenizer

This entry is a serving variant of Thinking Machines: Inkling. A variant shares its base model's tokenizer by construction, so the measurement lives on the base record and this page inherits it.

Identity statement

Thinking Machines: Inkling (free) is Thinking Machines's model. Its measured tokenizer sits with the GPT group, which is evidence that it builds on the GPT tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against Thinking Machines's authorship of the model itself.

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	Identical contract to 1 other entry	api_e0f61657
Context and output	1,048,576 context · 262,144 max output	declared
Reasoning contract	Optional · efforts max, high, medium, low, minimal, none · default high	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

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,...

Modalities: text+image+audio->text
Declared tokenizer: Other
Prompt price: $0 / M tokens
Completion price: $0 / M tokens

Supported parameters

frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortseedstoptemperaturetoolstop_p

defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}

Catalogue entry Weights on Hugging Face

History

Every observation, kept as taken

17 July 2026Enters the OpenRouter catalogue with no declared family.

Cite this page as the evidence record for Thinking Machines: Inkling (free): the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.