Model card

Made by
Ai2
Size
5.5B parameters
Published
4 May 2026
More about the model
Publication
arXiv 2605.02881
Weights licence
Apache 2.0, for research and education under Ai2's Responsible Use Guidelines source
Actions per chunk
15, at 15 Hz source
Smallest GPU
Under 16 GB of GPU memory, in bfloat16 source
Architecture
Molmo2-ER vision-language model and a flow-matching action expert that reads its key-value cache at every layer source
Training data
Fine-tuned on 74,604 filtered DROID episodes (17.8M frames) source

Run with Positronic

Start the server source

docker run --gpus all -p 8000:8000 positro/molmoact2-droid

Drive a DROID robot from a positronic checkout guide

uv run --extra hardware positronic-inference real \
  --policy=.remote \
  --policy.address.host=localhost --policy.address.port=8000 \
  --next_task.instruction="Put the marker on the plate"

Progress through an episode

Each band shows how many episodes of MolmoAct2 had succeeded, partly succeeded (some subtask score) or had no success at each second of simulated time. An episode that has ended stays in its band. The dashed line shows the mean Reliability, the mean subtask score.

Episodes

Each episode of MolmoAct2 on RoboLab-120, the newest first.

360 episodes
Task Task difficulty Result Subtask score, % Time to success, s
Put one (1) more bananas in the grey bin. Easy Success 100 14.1
Put one (1) more bananas in the grey bin. Easy Success 100 18.8
Put one (1) more bananas in the grey bin. Easy Success 100 16.1
Pick up the banana and put it on the plate Easy Success 100 20.7
Pick up the banana and put it on the plate Easy Success 100 30.3
Pick up the banana and put it on the plate Easy Success 100 25.1
Put the rubiks cube behind the bowl Easy Fail 67 -
Put the rubiks cube behind the bowl Easy Fail 33 -
Put the rubiks cube behind the bowl Easy Fail 33 -
Pick up a fruit Easy Fail 100 -
Pick up a fruit Easy Fail 100 -
Pick up a fruit Easy Success 100 21.1
Place the smaller object in the grey bin. Medium Fail 0 -
Place the smaller object in the grey bin. Medium Fail 0 -
Place the smaller object in the grey bin. Medium Success 100 21.1
Put the mustard in the right bin Easy Success 100 14.1
Put the mustard in the right bin Easy Success 100 16.4
Put the mustard in the right bin Easy Success 100 12.9
Place the mustard on the raisin box. Very hard Fail 0 -
Place the mustard on the raisin box. Very hard Fail 0 -
Place the mustard on the raisin box. Very hard Fail 0 -
Put the white mug in the center of the table. Easy Fail 33 -
Put the white mug in the center of the table. Easy Fail 33 -
Put the white mug in the center of the table. Easy Fail 33 -
Stack the right bowl on the left bowl Hard Fail 0 -
Stack the right bowl on the left bowl Hard Success 100 17.9
Stack the right bowl on the left bowl Hard Fail 0 -
Put the rubiks cube in front of the bowl Medium Fail 33 -
Put the rubiks cube in front of the bowl Medium Fail 33 -
Put the rubiks cube in front of the bowl Medium Fail 33 -
Put the red bbq sauce bottle in the crate Easy Success 100 10.6
Put the red bbq sauce bottle in the crate Easy Success 100 9.9
Put the red bbq sauce bottle in the crate Easy Success 100 10.8
Put the cube in the bowl Easy Success 100 20.1
Put the cube in the bowl Easy Fail 0 -
Put the cube in the bowl Easy Success 100 12.7
Put the onion on the plate Medium Fail 0 -
Put the onion on the plate Medium Fail 0 -
Put the onion on the plate Medium Fail 0 -
Stack the left bowl on the right bowl Hard Fail 0 -
Stack the left bowl on the right bowl Hard Fail 0 -
Stack the left bowl on the right bowl Hard Fail 0 -
Make sure there are 3 (three) bananas in the grey bin. Easy Success 100 16.1
Make sure there are 3 (three) bananas in the grey bin. Easy Success 100 13.9
Make sure there are 3 (three) bananas in the grey bin. Easy Success 100 14.9
put the bowl in the grey bin Easy Fail 0 -
put the bowl in the grey bin Easy Fail 0 -
put the bowl in the grey bin Easy Success 100 21.3
Put the mustard in the left bin Medium Fail 0 -
Put the mustard in the left bin Medium Fail 0 -
Put the mustard in the left bin Medium Success 100 14.9
Take the white colored measuring spoon out of the red bowl and put it on the table. Easy Success 100 16.7
Take the white colored measuring spoon out of the red bowl and put it on the table. Easy Fail 0 -
Take the white colored measuring spoon out of the red bowl and put it on the table. Easy Fail 0 -
Put the onion in the wood bowl Easy Fail 0 -
Put the onion in the wood bowl Easy Success 100 26.4
Put the onion in the wood bowl Easy Fail 0 -
Put the red dishware in the grey bin Easy Fail 50 -
Put the red dishware in the grey bin Easy Success 100 34.1
Put the red dishware in the grey bin Easy Fail 50 -
Put the rubiks cube to the left of the bowl Easy Fail 67 -
Put the rubiks cube to the left of the bowl Easy Fail 33 -
Put the rubiks cube to the left of the bowl Easy Fail 67 -
Pick up the green vegetable block Hard Fail 0 -
Pick up the green vegetable block Hard Fail 50 -
Pick up the green vegetable block Hard Fail 0 -
Pick up the eye glasses Medium Fail 50 -
Pick up the eye glasses Medium Fail 50 -
Pick up the eye glasses Medium Fail 50 -
Put the rubiks cube to the right of the bowl Easy Fail 67 -
Put the rubiks cube to the right of the bowl Easy Success 100 13.7
Put the rubiks cube to the right of the bowl Easy Fail 67 -
Pick up the cordless drill. Easy Fail 100 -
Pick up the cordless drill. Easy Fail 100 -
Pick up the cordless drill. Easy Fail 100 -
Put the cube or the banana in the bowl Easy Fail 0 -
Put the cube or the banana in the bowl Easy Fail 0 -
Put the cube or the banana in the bowl Easy Success 100 20.9
Stack the rubiks cubes in a tower Hard Fail (0/2) 0 -
Stack the rubiks cubes in a tower Hard Fail (0/2) 0 -
Stack the rubiks cubes in a tower Hard Fail (0/2) 0 -
put the banana then the cube in the bowl Medium Fail (0/2) 0 -
put the banana then the cube in the bowl Medium Fail (0/2) 0 -
put the banana then the cube in the bowl Medium Fail (0/2) 0 -
Put any white plastic bottle in the square pail Easy Success 100 15.1
Put any white plastic bottle in the square pail Easy Success 100 15.7
Put any white plastic bottle in the square pail Easy Success 100 21.4
Pick up the butter box and place it on top of the raisin box Very hard Success 0 29.4
Pick up the butter box and place it on top of the raisin box Very hard Success 0 20.5
Pick up the butter box and place it on top of the raisin box Very hard Fail 0 -
Grab a bagel Medium Fail 100 -
Grab a bagel Medium Fail 100 -
Grab a bagel Medium Fail 100 -
Pick up the large blue pitcher Medium Fail 50 -
Pick up the large blue pitcher Medium Success 100 29.5
Pick up the large blue pitcher Medium Fail 50 -
Stack the white mugs on top of each other. Hard Fail 0 -
Stack the white mugs on top of each other. Hard Fail 50 -
Stack the white mugs on top of each other. Hard Fail 0 -
Put the phone or the remote in the grey bin Hard Fail 0 -
Put the phone or the remote in the grey bin Hard Fail 0 -
Put the phone or the remote in the grey bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Place the larger object in the grey bin. Very hard Fail 0 -
Place the larger object in the grey bin. Very hard Fail 0 -
Place the larger object in the grey bin. Very hard Fail 0 -
Pick up the banana and place it in the bowl Easy Fail 0 -
Pick up the banana and place it in the bowl Easy Success 100 14.9
Pick up the banana and place it in the bowl Easy Fail 0 -
Put the lizard away in the bin Very hard Fail 0 -
Put the lizard away in the bin Very hard Fail 0 -
Put the lizard away in the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Make sure all the white mugs are upright so that the opening is facing upwards. Hard Success 100 22.5
Make sure all the white mugs are upright so that the opening is facing upwards. Hard Fail 0 -
Make sure all the white mugs are upright so that the opening is facing upwards. Hard Success 100 19.1
Put the whiteboard marker in the mug Very hard Fail 0 -
Put the whiteboard marker in the mug Very hard Fail 0 -
Put the whiteboard marker in the mug Very hard Fail 0 -
Put 2 bananas in the crate Easy Success 100 20.8
Put 2 bananas in the crate Easy Success 100 34.5
Put 2 bananas in the crate Easy Success 100 14.8
Stack the yellow block on the red block Medium Fail 0 -
Stack the yellow block on the red block Medium Fail 0 -
Stack the yellow block on the red block Medium Fail 0 -
Put the small red yogurt in the red bowl Very hard Fail 0 -
Put the small red yogurt in the red bowl Very hard Fail 0 -
Put the small red yogurt in the red bowl Very hard Fail 0 -
Put the bagels on the plate Very hard Fail 0 -
Put the bagels on the plate Very hard Fail 0 -
Put the bagels on the plate Very hard Fail 0 -
Put the cube and the banana in the bowl Easy Fail 50 -
Put the cube and the banana in the bowl Easy Fail 50 -
Put the cube and the banana in the bowl Easy Fail 50 -
Unstack the rubiks cube tower Easy Success 100 74.0
Unstack the rubiks cube tower Easy Success 100 32.8
Unstack the rubiks cube tower Easy Success 100 34.5
Stand the jug upright Very hard Fail 0 -
Stand the jug upright Very hard Fail 0 -
Stand the jug upright Very hard Fail 0 -
Put the canned food in the grey bin Hard Fail 0 -
Put the canned food in the grey bin Hard Success 100 39.0
Put the canned food in the grey bin Hard Fail 0 -
Pick up the orange measuring cup Medium Fail 0 -
Pick up the orange measuring cup Medium Fail 0 -
Pick up the orange measuring cup Medium Fail 0 -
Put the cube then the banana in the bowl Medium Fail (0/2) 0 -
Put the cube then the banana in the bowl Medium Fail (0/2) 0 -
Put the cube then the banana in the bowl Medium Fail (0/2) 0 -
Put the spring clamp in the right bin Hard Success 100 23.3
Put the spring clamp in the right bin Hard Fail 0 -
Put the spring clamp in the right bin Hard Fail 0 -
Take the bananas out Easy Success 100 53.2
Take the bananas out Easy Fail 100 -
Take the bananas out Easy Fail 100 -
Put the metal spoon that's in the wooden bowl in the mug Medium Fail 0 -
Put the metal spoon that's in the wooden bowl in the mug Medium Fail 0 -
Put the metal spoon that's in the wooden bowl in the mug Medium Fail 0 -
Put the serving bowl anywhere on the shelf in front of you Very hard Fail 0 -
Put the serving bowl anywhere on the shelf in front of you Very hard Fail 0 -
Put the serving bowl anywhere on the shelf in front of you Very hard Fail 0 -
Put all the red things in the grey bin Medium Fail 50 -
Put all the red things in the grey bin Medium Fail 0 -
Put all the red things in the grey bin Medium Fail 50 -
Take the keyboard out of the bin and put it on the table Hard Fail 0 -
Take the keyboard out of the bin and put it on the table Hard Fail 0 -
Take the keyboard out of the bin and put it on the table Hard Fail 0 -
Put the computer mouse on the keyboard Hard Fail 0 -
Put the computer mouse on the keyboard Hard Fail 0 -
Put the computer mouse on the keyboard Hard Fail 0 -
Put the pink spaghetti spoon in the pot Hard Fail 0 -
Put the pink spaghetti spoon in the pot Hard Fail 0 -
Put the pink spaghetti spoon in the pot Hard Fail 0 -
Take the spatula off the shelf and put it on the table Very hard Fail 0 -
Take the spatula off the shelf and put it on the table Very hard Fail 0 -
Take the spatula off the shelf and put it on the table Very hard Fail 0 -
Put the coffee pot in the grey bin Very hard Fail 0 -
Put the coffee pot in the grey bin Very hard Fail 0 -
Put the coffee pot in the grey bin Very hard Fail 0 -
Put the red mug upright so that the opening is facing upwards. Hard Success 100 55.3
Put the red mug upright so that the opening is facing upwards. Hard Fail 0 -
Put the red mug upright so that the opening is facing upwards. Hard Fail 0 -
Move an orange to the white bowl Very hard Fail 0 -
Move an orange to the white bowl Very hard Fail 0 -
Move an orange to the white bowl Very hard Fail 0 -
Throw away the apple Very hard Fail 0 -
Throw away the apple Very hard Fail 0 -
Throw away the apple Very hard Fail 0 -
Put all white objects and yellow objects in the grey bin Very hard Fail 0 -
Put all white objects and yellow objects in the grey bin Very hard Fail 0 -
Put all white objects and yellow objects in the grey bin Very hard Fail 0 -
Put the wooden spatula in the bowl Hard Fail 0 -
Put the wooden spatula in the bowl Hard Fail 0 -
Put the wooden spatula in the bowl Hard Fail 0 -
Put any white plastic bottle on the shelf Very hard Fail 0 -
Put any white plastic bottle on the shelf Very hard Fail 0 -
Put any white plastic bottle on the shelf Very hard Fail 0 -
Select the blue hammer and put it on the table Hard Fail 0 -
Select the blue hammer and put it on the table Hard Fail 0 -
Select the blue hammer and put it on the table Hard Fail 0 -
Stack the blocks into a tower Medium Fail (1/3) 33 -
Stack the blocks into a tower Medium Fail (1/3) 33 -
Stack the blocks into a tower Medium Fail (1/3) 33 -
Sort all rubiks cubes into the bin Easy Fail 67 -
Sort all rubiks cubes into the bin Easy Fail 33 -
Sort all rubiks cubes into the bin Easy Fail 67 -
Select the cordless drill and put it on the table Very hard Fail 0 -
Select the cordless drill and put it on the table Very hard Fail 0 -
Select the cordless drill and put it on the table Very hard Fail 0 -
Move the pink tool from this utensil container to the other utensil holder Very hard Fail 0 -
Move the pink tool from this utensil container to the other utensil holder Very hard Fail 0 -
Move the pink tool from this utensil container to the other utensil holder Very hard Fail 0 -
Put the lizards in the bin Hard Fail 50 -
Put the lizards in the bin Hard Fail 0 -
Put the lizards in the bin Hard Fail 0 -
Move an orange or a lime to the wood bowl Medium Success 100 56.9
Move an orange or a lime to the wood bowl Medium Fail 0 -
Move an orange or a lime to the wood bowl Medium Fail 0 -
Put the recyclable cartons in the grey bin Very hard Fail 0 -
Put the recyclable cartons in the grey bin Very hard Fail 0 -
Put the recyclable cartons in the grey bin Very hard Fail 0 -
Put the smartphone in the grey bin Very hard Fail 0 -
Put the smartphone in the grey bin Very hard Fail 0 -
Put the smartphone in the grey bin Very hard Fail 0 -
Clean up the white mugs Very hard Fail 0 -
Clean up the white mugs Very hard Fail 0 -
Clean up the white mugs Very hard Fail 0 -
Put the small pumpkin in the bin Very hard Fail 0 -
Put the small pumpkin in the bin Very hard Fail 0 -
Put the small pumpkin in the bin Very hard Fail 0 -
Put the red BBQ sauce bottles in the grey bin Hard Fail 0 -
Put the red BBQ sauce bottles in the grey bin Hard Fail 0 -
Put the red BBQ sauce bottles in the grey bin Hard Fail 0 -
Put the bigger pumpkin in the bin Hard Success 100 20.8
Put the bigger pumpkin in the bin Hard Success 100 27.5
Put the bigger pumpkin in the bin Hard Success 100 18.6
Put all the green fruit on the plate Easy Fail 0 -
Put all the green fruit on the plate Easy Fail 0 -
Put all the green fruit on the plate Easy Fail 0 -
Stack the blocks in the order from bottom to top: red, blue, green, yellow Very hard Fail (0/3) 0 -
Stack the blocks in the order from bottom to top: red, blue, green, yellow Very hard Fail (0/3) 0 -
Stack the blocks in the order from bottom to top: red, blue, green, yellow Very hard Fail (0/3) 0 -
Put three (3) fruits on the plate Easy Fail 33 -
Put three (3) fruits on the plate Easy Fail 33 -
Put three (3) fruits on the plate Easy Fail 67 -
Reorient all the mugs upright so that the opening is facing upwards. Hard Fail 0 -
Reorient all the mugs upright so that the opening is facing upwards. Hard Fail 0 -
Reorient all the mugs upright so that the opening is facing upwards. Hard Fail 0 -
Put the cartons that can be recycled on the box Very hard Fail 0 -
Put the cartons that can be recycled on the box Very hard Fail 0 -
Put the cartons that can be recycled on the box Very hard Fail 0 -
Put the cartons that can be recycled in the vertical crate Very hard Fail 0 -
Put the cartons that can be recycled in the vertical crate Very hard Fail 0 -
Put the cartons that can be recycled in the vertical crate Very hard Fail 0 -
Put all the oranges on the plate Easy Fail 50 -
Put all the oranges on the plate Easy Fail 50 -
Put all the oranges on the plate Easy Fail 50 -
Put the dishware in the grey bin Medium Fail 33 -
Put the dishware in the grey bin Medium Fail 33 -
Put the dishware in the grey bin Medium Fail 33 -
Put all the small plastic bottles in the square pail Easy Fail 0 -
Put all the small plastic bottles in the square pail Easy Fail 67 -
Put all the small plastic bottles in the square pail Easy Fail 67 -
Put all the jugs on the shelf Very hard Fail 0 -
Put all the jugs on the shelf Very hard Fail 0 -
Put all the jugs on the shelf Very hard Fail 0 -
Put all the pumpkins away in the bin Very hard Fail 50 -
Put all the pumpkins away in the bin Very hard Fail 50 -
Put all the pumpkins away in the bin Very hard Fail 50 -
Pack yellow objects in right container and blue object in the left container Very hard Fail (0/2) 0 -
Pack yellow objects in right container and blue object in the left container Very hard Fail (0/2) 0 -
Pack yellow objects in right container and blue object in the left container Very hard Fail (0/2) 0 -
Put the black items in the grey bin Hard Fail 20 -
Put the black items in the grey bin Hard Fail 20 -
Put the black items in the grey bin Hard Fail 20 -
Move the bananas to the bagel plate Hard Fail 50 -
Move the bananas to the bagel plate Hard Fail 50 -
Move the bananas to the bagel plate Hard Fail 50 -
Put away the snacks in the bin Very hard Fail 0 -
Put away the snacks in the bin Very hard Fail 0 -
Put away the snacks in the bin Very hard Fail 0 -
Put two (2) mugs on the wire shelf Hard Fail 0 -
Put two (2) mugs on the wire shelf Hard Fail 50 -
Put two (2) mugs on the wire shelf Hard Fail 0 -
Put the apple and yogurt in the bowl Hard Fail 0 -
Put the apple and yogurt in the bowl Hard Fail 0 -
Put the apple and yogurt in the bowl Hard Fail 0 -
Put hammers in the right bin and do not touch anything else Very hard Fail 0 -
Put hammers in the right bin and do not touch anything else Very hard Fail 0 -
Put hammers in the right bin and do not touch anything else Very hard Fail 0 -
Put the fork and spoon in the ceramicmug Very hard Fail 0 -
Put the fork and spoon in the ceramicmug Very hard Fail 0 -
Put the fork and spoon in the ceramicmug Very hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 50 -
Pack canned foods into the bin Hard Fail 0 -
Put the two mugs on the shelf Hard Fail 0 -
Put the two mugs on the shelf Hard Fail 0 -
Put the two mugs on the shelf Hard Fail 0 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Put the non-hammer tools in the right bin Very hard Fail 0 -
Put the non-hammer tools in the right bin Very hard Fail 0 -
Put the non-hammer tools in the right bin Very hard Fail 0 -
Take the mugs off the shelf Easy Fail 50 -
Take the mugs off the shelf Easy Fail 50 -
Take the mugs off the shelf Easy Fail 100 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Put the red hammer and black hammer in the left bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Sort all colored blocks into the bin Medium Fail 50 -
Sort all colored blocks into the bin Medium Fail 0 -
Sort all colored blocks into the bin Medium Fail 50 -
Put the green spoons in the pot Hard Fail 0 -
Put the green spoons in the pot Hard Fail 0 -
Put the green spoons in the pot Hard Fail 33 -
Pack canned foods into the bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Pack canned foods into the bin Hard Fail 0 -
Put all the cubes and blocks in the bin Easy Fail (0/2) 33 -
Put all the cubes and blocks in the bin Easy Fail (0/2) 0 -
Put all the cubes and blocks in the bin Easy Fail (1/2) 75 -
Put the two measuring cups outside of the plate Hard Fail 50 -
Put the two measuring cups outside of the plate Hard Fail 0 -
Put the two measuring cups outside of the plate Hard Fail 50 -
Sort the sauce condiments into the grey bin Hard Fail 25 -
Sort the sauce condiments into the grey bin Hard Fail 50 -
Sort the sauce condiments into the grey bin Hard Fail 25 -
Put all of the serving spoons with no holes in the pot Hard Fail 0 -
Put all of the serving spoons with no holes in the pot Hard Fail 33 -
Put all of the serving spoons with no holes in the pot Hard Fail 33 -
Put the electronic devices in the grey bin Hard Fail 25 -
Put the electronic devices in the grey bin Hard Fail 25 -
Put the electronic devices in the grey bin Hard Fail 25 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Pack boxed foods into the bin Very hard Fail 0 -
Put all plastic bottles away in the bin Medium Fail 33 -
Put all plastic bottles away in the bin Medium Fail 33 -
Put all plastic bottles away in the bin Medium Fail 33 -
Take out all the hammers and put them on the table Very hard Fail 0 -
Take out all the hammers and put them on the table Very hard Fail 0 -
Take out all the hammers and put them on the table Very hard Fail 0 -
Clean up all the smaller toys and leave the birdhouse on the table Very hard Fail 0 -
Clean up all the smaller toys and leave the birdhouse on the table Very hard Fail 0 -
Clean up all the smaller toys and leave the birdhouse on the table Very hard Fail 0 -
Clear away the organic objects Very hard Fail 0 -
Clear away the organic objects Very hard Fail 0 -
Clear away the organic objects Very hard Fail 0 -
Put all the fruits on the plate Hard Fail 14 -
Put all the fruits on the plate Hard Fail 14 -
Put all the fruits on the plate Hard Fail 14 -