MolmoAct 2 vs Mistral Medium 3.5 128B

At a Glance

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Pricing and Limits
Context windowMaximum documented tokensNot reported262K
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 2Mistral-Medium-3.5-128B
DeveloperAi2Mistral AI
FamilyMolmoAct 2Mistral Medium 3 5 128b
ModelMolmoAct 2Mistral-Medium-3.5-128B
Version2Mistral-Medium-3.5-128B
Lifecycleactiveactive
Released2026-05-05Unknown
Knowledge cutoffUnknownUnknown
Input modalitiesText, Image, Robot stateText, Image
Output modalitiesRobot actionText
Context windowUnknown262K
Total parameters5B127.7B
Active parametersUnknownUnknown
Licenseapache-2.0other
Open weightsYesYes
API availableNoUnknown
Self-hostableYesYes
Provider accessUnknownUnknown
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

Mistral Medium 3.5 128B Capabilities

chatgenerationreasoningtools
Model typeUnknown
InferenceUnknown
Action representationUnknown
Supported embodimentsUnknown
Canonical IDmistralai/Mistral-Medium-3.5-128B

Primary Evidence

Sources and Freshness

Questions

MolmoAct 2 vs Mistral Medium 3.5 128B FAQs

Is MolmoAct 2 or Mistral Medium 3.5 128B better for coding?+

This comparison does not currently contain a protocol-matched coding benchmark for both MolmoAct 2 and Mistral Medium 3.5 128B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Which is cheaper, MolmoAct 2 or Mistral Medium 3.5 128B?+

Neither model has a directly sourced input price in this comparison. Neither model has a directly sourced output price in this comparison.

Which has a larger context window, MolmoAct 2 or Mistral Medium 3.5 128B?+

Neither model has a larger sourced context window in this comparison. MolmoAct 2 is — and Mistral Medium 3.5 128B is 262K.

Which performs better in benchmarks, MolmoAct 2 or Mistral Medium 3.5 128B?+

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

Can MolmoAct 2 or Mistral Medium 3.5 128B be self-hosted?+

Both models have the same recorded self-hosting status: supported. MolmoAct 2 is open weight; Mistral Medium 3.5 128B is open weight.

Can MolmoAct 2 and Mistral Medium 3.5 128B understand images?+

MolmoAct 2 is documented with image input; Mistral Medium 3.5 128B is documented with image input. This reflects supported input modalities, not vision quality.

Which can generate longer answers, MolmoAct 2 or Mistral Medium 3.5 128B?+

Neither has a larger sourced maximum output. MolmoAct 2 is — and Mistral Medium 3.5 128B is —.

Do MolmoAct 2 and Mistral Medium 3.5 128B support reasoning and tool use?+

MolmoAct 2: reasoning and image input. Mistral Medium 3.5 128B: reasoning, tool calling, and image input. Feature support does not establish relative quality.

Which is available from more inference providers, MolmoAct 2 or Mistral Medium 3.5 128B?+

MolmoAct 2 has 0 sourced provider routes; Mistral Medium 3.5 128B has 0, a tie.

Which offers better value, MolmoAct 2 or Mistral Medium 3.5 128B?+

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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