Inkling 2 Small is Thinking Machines' second-generation 594B-total, 17B-active mixture-of-experts model with image input. its weights are closed for now; the lab plans an Apache 2.0 release. on octomind it is served only through Tinker.
pick it if
want the lowest-priced Inkling on octomind, below Inkling Small on both input and output
need adjustable reasoning effort, with chain-of-thought you can switch off
work on long agent runs: the lab trained it with a 256K window plus compaction
skip it if
you need open weights today; the lab has not released them yet
you need audio input; Inkling 2 Small takes text and images only
GPT-OSS 120B is the larger of OpenAI's two Apache 2.0 open-weight models, with 117B total and 5.1B active parameters. it takes text only and sits above the cheaper GPT-OSS 20B.
pick it if
you want Apache 2.0 open weights you could also self-host
you need adjustable reasoning effort: low, medium or high
you need function calling and structured outputs from an open model
skip it if
you need image input; it takes text only
you are on the free plan, which includes only the 20B sibling
faq
which is cheaper, Inkling 2 Small or GPT-OSS 120B?
Inkling 2 Small lists the lower input price, while GPT-OSS 120B lists the lower output price. on a coding-agent session (2M tokens in, 60,000 out) Inkling 2 Small costs $0.66 and GPT-OSS 120B $0.75.
which has the larger context window?
Inkling 2 Small offers the larger context window. Inkling 2 Small: 256k tokens; GPT-OSS 120B: 128k tokens.
which one accepts images?
Inkling 2 Small supports vision; GPT-OSS 120B does not.
can i switch between Inkling 2 Small and GPT-OSS 120B mid-task?
yes. in an octomind session, /model octohub:inkling-2-small and /model octohub:gpt-oss-120b switch models without losing the conversation, so you can draft on one and review on the other.
try either model
switch between models inside the same octomind session.