C5R CORP.

Press BaTiO₃ pellets

Physical end-to-end experiments
Task space

Press two barium titanate pellets using a PVA binder. The pellets should have flat, crack-free faces and remain intact when handled.

Developing new materials requires preparing samples for processing and analysis. Pellets are a common way to turn loose powders into solid bodies that can be measured. Poorly prepared pellets can crack or crumble, causing sample loss and disrupting later experiments.

Agents prepare the powder and binder, choose pressing conditions, and execute the process. The challenge is to compact the powder uniformly into a strong body.

Scoring

Both pellets must pass the integrity assessment and survive a 1 m drop without fracturing.

RESULTS

Press two barium titanate pellets using a PVA binder, with flat, crack-free faces that remain intact during handling.
ModelPass@1Cost ($)Model/API inference cost only, averaged per task attempt. Lab and labor costs are not reported. Repeats are averaged using the same task and family weights as scores.
Claude Fable 5.1xhigh100.0%$24.07
Claude Opus 5xhigh0.0%$38.83
GPT–6 Astraxhigh0.0%$92.55
GPT–5.6 Solxhigh0.0%$28.22
Gemini 3.8 Flashhigh0.0%$3.58
Grok 4.6xhigh0.0%$7.31
0%50%100%

Run progress

Elapsed time from task receipt. Milestones use published annotations or the first matching recorded Facility action. A red × marks when a run stopped, at its last reached milestone.

Task receivedPrepare PVA binderWeigh BaTiO₃Mix binder and powderCharge pellet diesPress pelletsEnd of recorded run02h4h6h7.5hElapsed time / hoursGPT–5.6 Sol · Task received: 0m; 1/1 attemptsGPT–5.6 Sol · Prepare PVA binder: 1h 01m; 1/1 attemptsGPT–5.6 Sol · Weigh BaTiO₃: 1h 01m; 1/1 attemptsGPT–5.6 Sol · Mix binder and powder: 1h 03m; 1/1 attemptsGPT–5.6 Sol · Charge pellet dies: 4h 24m; 1/1 attemptsGPT–5.6 Sol · Press pellets: 4h 43m; 1/1 attemptsGPT–5.6 Sol · End of recorded run: 4h 54m; 1/1 attempts0.0 %Claude Opus 5 · Task received: 0m; 1/1 attemptsClaude Opus 5 · Prepare PVA binder: 2h 08m; 1/1 attemptsClaude Opus 5 · Weigh BaTiO₃: 2h 12m; 1/1 attemptsClaude Opus 5 · Mix binder and powder: 2h 15m; 1/1 attemptsClaude Opus 5 · Charge pellet dies: 3h 23m; 1/1 attemptsClaude Opus 5 · Press pellets: 3h 31m; 1/1 attemptsClaude Opus 5 · End of recorded run: 3h 59m; 1/1 attempts0.0 %Grok 4.6 · Task received: 0m; 1/1 attemptsGrok 4.6 · Prepare PVA binder: 1h 13m; 1/1 attemptsGrok 4.6 · Weigh BaTiO₃: 1h 13m; 1/1 attemptsGrok 4.6 · Mix binder and powder: 1h 17m; 1/1 attemptsGrok 4.6 · Charge pellet dies: 2h 35m; 1/1 attemptsGrok 4.6 · Press pellets: 2h 45m; 1/1 attemptsGrok 4.6 · End of recorded run: 7h 31m; 1/1 attempts0.0 %Gemini 3.8 Flash · Task received: 0m; 1/1 attemptsGemini 3.8 Flash · Prepare PVA binder: 1h 24m; 1/1 attemptsGemini 3.8 Flash · Weigh BaTiO₃: 1h 25m; 1/1 attemptsGemini 3.8 Flash · Mix binder and powder: 1h 26m; 1/1 attemptsGemini 3.8 Flash · Charge pellet dies: 1h 56m; 1/1 attemptsGemini 3.8 Flash · Press pellets: 1h 59m; 1/1 attemptsGemini 3.8 Flash · End of recorded run: 2h 01m; 1/1 attempts0.0 %Claude Fable 5.1 · Task received: 0m; 1/1 attemptsClaude Fable 5.1 · Prepare PVA binder: 1h 10m; 1/1 attemptsClaude Fable 5.1 · Weigh BaTiO₃: 1h 16m; 1/1 attemptsClaude Fable 5.1 · Mix binder and powder: 1h 18m; 1/1 attemptsClaude Fable 5.1 · Charge pellet dies: 2h 15m; 1/1 attemptsClaude Fable 5.1 · Press pellets: 3h 45m; 1/1 attemptsClaude Fable 5.1 · End of recorded run: 3h 51m; 1/1 attempts100.0 %GPT–6 Astra · Task received: 0m; 1/1 attemptsGPT–6 Astra · Prepare PVA binder: 3h 13m; 1/1 attemptsGPT–6 Astra · Weigh BaTiO₃: 3h 13m; 1/1 attemptsGPT–6 Astra · Mix binder and powder: 5h 07m; 1/1 attemptsGPT–6 Astra · Charge pellet dies: 6h 18m; 1/1 attemptsGPT–6 Astra · Press pellets: 6h 24m; 1/1 attemptsGPT–6 Astra · End of recorded run: 7h 01m; 1/1 attempts0.0 %

Model trajectories

Run grading

Fail
MeasurementRecorded resultOutcome
Score0.0 %× Fail

Pass condition: Both pellets must pass the integrity assessment and survive a 1 m drop without fracturing.

Pellet integrity is assessed against ASTM C785-08(2022).

PelletIntegrityDrop testScore contribution
Pellet 1× Fail× Fail0%
Pellet 2× Fail× Fail0%

Pellet scans

3D scans acquired with an Artec Micro II. Drag to rotate · Scroll to zoom.

Pellet 1

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Pellet 2

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Press BaTiO₃ pelletsGPT–5.6 Sol xhigh
Run gradingFail
00:0000:01

Model activity

Model transcript

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Appendix

Equipment, labware and reagents available in the Facility task environment. Selections vary across recorded attempts.

Main equipment2 items
Carver, Inc.

Carver Model 3851 Bench-Top Standard Unheated Hydraulic Press (12 ton)

CARVER:3851

Compress barium titanate powder into pellets.

OHAUS

Pioneer PX224 Analytical Balance

OHAUS:30430053

Measure pellet mass for final characterization.

Supporting equipment11 items
ItemBrandSKURole
Scout SPX123 Portable Precision BalanceOHAUSOHAUS:30253017Weigh starting powders and recovered material.
Eisco Labs polypropylene measuring cylinder, 100 mL, Class B, 1 mL graduationsEisco LabsEISCO:CH0354DMeasure liquid volumes during solution preparation.
USA Lab 7-H550-PRO 7x7 Digital Magnetic Hotplate StirrerUSA LabUSA-LAB:USA-7-H550-PROHeat and stir PVA in water to dissolve the polymer.
NEIKO 01407A Electronic Digital Caliper, 0-6 in / 0-150 mm, stainless steelNEIKONEIKO:01407AMeasure pellet dimensions.
Picus 2 Electronic Single Channel Pipette (100-5000 uL)SartoriusSARTORIUS:LH-747101Transfer measured volumes of reagents and samples.
Digimatic Micrometer MDC-Lite 293-831-32, 0 - 1" / 0 - 25.4 mm, ratchet stopMitutoyo CorporationMITUTOYO:293-831-32Measure pellet thickness.
Pellet press die set, 13 mm cylindrical, D2 tool steelPrecision Elements LtdPRECISION-ELEMENTS:PPDE01C013Form cylindrical 13 mm pellets in the hydraulic press.
Gilson USA Standard test sieve, 3 in, all-stainless full-height, No. 100 (150 um)Gilson Company, Inc.GILSON-COMPANY:V3SF-100Break up and screen dried powder agglomerates before pressing.
Gilson 3in All Stainless Sieve Pan, Full-Height (V3SFXPN)Gilson Company, Inc.GILSON-COMPANY:V3SFXPNCollect screened powder beneath the sieve.
Konohan polished agate mortar and pestle set, 70 mm ID x 21 mm deepKonohanKONOHAN:KQ-KONOHAN-2308Gently break up dried powder agglomerates.
Sdanart gilding brush set, 7 pcs, goat-hair mop brushes (GBS001)SdanartSDANART:GBS001Brush powder through the sieve and recover retained material.
Reagents5 items
ItemBrandSKURole
Barium titanate powder, 99.5% trace metals basisSigma-AldrichSIGMA-ALDRICH:338842Starting powder for two pressed pellets.
Polyvinyl alcohol, 86–89% hydrolyzed, low molecular weightThermo Fisher ScientificTHERMO-FISHER:041238.22PVA grade used in recorded attempts; dissolved in water to prepare the pellet binder.
Polyvinyl alcohol, 86–89% hydrolyzed, medium molecular weightThermo Fisher ScientificTHERMO-FISHER:041239.22PVA grade used in recorded attempts; dissolved in water to prepare the pellet binder.
Polyvinyl alcohol, 98–99% hydrolyzed, medium molecular weightThermo Fisher ScientificTHERMO-FISHER:041242.22PVA grade used in recorded attempts; dissolved in water to prepare the pellet binder.
Deionized water, ASTM Type I, certified ACS gradeLabChemLABCHEM:LC267406Solvent for preparing the PVA binder solution.
Consumables5 items
ItemBrandSKURole
Uline polystyrene weighing dish, 20 mL, antistaticUlineULINE:S-24431Weigh and transfer small powder charges.
Pure Ponta weighing boats, medium, 100 mL, antistatic polystyrenePure PontaGENERIC:PURE-PONTA-WEIGH-BOAT-100MLLarger weighing boats available for powder handling and pellet collection.
Fisherbrand Reusable Glass Low-Form Griffin Beaker, 250 mL, KG-33 borosilicate, graduatedThermo Fisher ScientificTHERMO-FISHER:FB100250Prepare and hold the PVA binder solution during heating and stirring.
Fisherbrand Reusable Glass Low-Form Griffin Beaker, 400 mL, KG-33 borosilicate, graduatedThermo Fisher ScientificTHERMO-FISHER:FB100400Larger vessel available for preparing and handling binder solution.
Borosilicate evaporating dish, ~75 mm x 18 mm deep (~80 mL)GenericGENERIC:EVAPORATING-DISH-80ML-BOROSILICATECombine barium titanate with PVA binder and dry the powder mixture before pressing.