MolmoAct 2 vs gpt-oss-120b

At a Glance

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Pricing and Limits
Context windowMaximum documented tokensNot reported131K
Model facts checkedAug 29, 2026View model evidence →Aug 28, 2026View model evidence →
Different Model RolesThese models do not share a sourced market category. Their primary-source facts remain comparable below, while performance claims require matched evidence.

Available Benchmarks

All benchmark results →
No Protocol-Matched Benchmark Yet.Results appear here only when both models share the same benchmark version, metric, evaluation protocol, and evidence class.

Side-by-Side Facts

FieldMolmoAct 2gpt-oss-120b
DeveloperAi2OpenAI
FamilyMolmoAct 2Gpt Oss 120b
ModelMolmoAct 2gpt-oss-120b
Version2gpt-oss-120b
Lifecycleactiveactive
Released2026-05-05Unknown
Knowledge cutoffUnknownUnknown
Input modalitiesText, Image, Robot stateText
Output modalitiesRobot actionText
Context windowUnknown131K
Total parameters5B116.8B
Active parametersUnknown5.1B
Licenseapache-2.0apache-2.0
Open weightsYesYes
API availableNoYes
Self-hostableYesYes
Provider accessUnknownCerebras (Standard), Deepinfra (Standard), Fireworks Ai (Serverless, Standard), Groq (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Serverless, Standard)
Capabilitiesaction-reasoning, bimanual-manipulation, depth-reasoning, fine-tuningchat, generation, reasoning, tools
Robotics model typeAction reasoning modelUnknown
Action representationFlow-matching continuous action expertUnknown
Control architectureMolmo 2-ER backbone with KV-cache bridge and action expertUnknown
Inference locationFlexibleUnknown
Native control rate (Hz)UnknownUnknown
Supported embodimentsSO-100, SO-101, Franka, WidowX, bimanual YAMUnknown
Training dataOpen bimanual YAM, SO-100/SO-101, DROID, BC-Z, Fractal, Bridge, and prior MolmoAct data described by Ai2.Unknown

MolmoAct 2 Capabilities

action-reasoningbimanual-manipulationdepth-reasoningfine-tuning
Model typeAction reasoning model
InferenceFlexible
Action representationFlow-matching continuous action expert
Supported embodiments5
Canonical IDallenai/MolmoAct2

gpt-oss-120b Capabilities

chatgenerationreasoningtools
Model typeUnknown
InferenceUnknown
Action representationUnknown
Supported embodimentsUnknown
Canonical IDopenai/gpt-oss-120b

Primary Evidence

Sources and Freshness

Questions

MolmoAct 2 vs gpt-oss-120b FAQs

Is MolmoAct 2 or gpt-oss-120b better for coding?+

This comparison does not currently contain a protocol-matched coding benchmark for both MolmoAct 2 and gpt-oss-120b, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Which is cheaper, MolmoAct 2 or gpt-oss-120b?+

Only gpt-oss-120b has a directly sourced input price: $0.037 per million tokens. Only gpt-oss-120b has a directly sourced output price: $0.17 per million tokens.

Which has a larger context window, MolmoAct 2 or gpt-oss-120b?+

Neither model has a larger sourced context window in this comparison. MolmoAct 2 is — and gpt-oss-120b is 131K.

Which performs better in benchmarks, MolmoAct 2 or gpt-oss-120b?+

There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.

Can MolmoAct 2 or gpt-oss-120b be self-hosted?+

Both models have the same recorded self-hosting status: supported. MolmoAct 2 is open weight; gpt-oss-120b is open weight.

Can MolmoAct 2 and gpt-oss-120b understand images?+

MolmoAct 2 is documented with image input; gpt-oss-120b is not documented with image input. This reflects supported input modalities, not vision quality.

Which can generate longer answers, MolmoAct 2 or gpt-oss-120b?+

Neither has a larger sourced maximum output. MolmoAct 2 is — and gpt-oss-120b is —.

Do MolmoAct 2 and gpt-oss-120b support reasoning and tool use?+

MolmoAct 2: reasoning and image input. gpt-oss-120b: reasoning and tool calling. Feature support does not establish relative quality.

Which is available from more inference providers, MolmoAct 2 or gpt-oss-120b?+

MolmoAct 2 has 0 sourced provider routes; gpt-oss-120b has 7, so gpt-oss-120b has broader tracked availability.

Which offers better value, MolmoAct 2 or gpt-oss-120b?+

There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.

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