Route mobility
Map stairs, grating, thresholds, slopes, aisle widths, doorways and elevator dependencies before comparing brands.
Factory inspection robots: quadrupeds vs AMRs vs humanoids
Choose based on the route, sensor payload, hazardous-area certification, autonomy, integrations and support. Robot shape alone is a poor buying criterion.
Start with the site constraint
Best default for multi-level routes, catwalks, stairs and equipment areas that stop wheeled platforms.
Payload weight reduces runtime and mobility. Hazardous-area approval belongs to the exact robot model and configuration, not the category.
- Visual
- Thermal
- Acoustic
- Gas
- Gauge reading
- Vibration
- 3D scanning
Category decision matrix
Eliminate the wrong robot type before comparing brands.
These are category-level screening rules grounded in the model evidence below. The exact configuration, site assessment and certificate always override a category assumption.
Swipe to compare all three categories →
| Decision factor | Quadrupeds | AMRs | Humanoids |
|---|---|---|---|
| Sensor payload | Spot publishes payload mounting, power and API interfaces; ANYmal X bundles visual, thermal, acoustic and LiDAR inspection sensors, with optional gas sensing.[S1][S2][S3] | MiR250 offers a 250 kg load surface, but its designated use is material transport. An inspection mast, sensor power and calibration remain an engineered top module.[S4] | Digit publishes a 35 lb carrying reference, but the reviewed commercial evidence concerns material handling rather than a turnkey inspection sensor interface.[S6][S7][S9] |
| Stairs and uneven terrain | Spot and ANYmal X publish stair or complex-terrain capability, including industrial stairs and grating in the reviewed evidence.[S1][S2][S3] | MiR250 is a floor vehicle limited to a ±5% incline in its specification. Multi-floor use depends on doors and a separately validated elevator workflow, not stairs.[S4] | Do not assume stair readiness. The reviewed Digit commercial evidence does not publish a stair acceptance specification for factory deployment.[S6][S7] |
| Hazardous environments | The ATEX/IECEx-certified ANYmal X is published for use up to Zone 1 IIB. The reviewed Spot product and support pages do not publish equivalent Ex approval.[S1][S2][S3][N1][N3] | MiR250 is IP21, indoor-only and specified for floors without water, oil or dirt. ISO 3691-4 does not cover potentially explosive environments.[S4][N2] | The reviewed Digit sources do not publish ATEX or IECEx approval. A classified area therefore fails the shortlist unless the exact configuration is certified.[S6][N1][N3] |
| Autonomy | Spot publishes autonomous missions, charging and obstacle replanning; ANYmal X publishes autonomous data collection and operations-system integration.[S1][S3] | MiR publishes long active runtime, fleet control, rerouting and traffic-management software for mapped factory operation.[S4][S5] | Digit publishes four-hour battery capability, autonomous docking and commercial workflows, but each inspection task still needs direct site evidence.[S6][S7] |
| Integrations | Spot exposes software and hardware interfaces; ANYmal X states integration into existing operations systems. CMMS or MES scope remains project-specific.[S1][S2][S3] | MiR publishes an open REST interface plus centralized fleet software. Confirm the exact ERP, WMS, MES, PLC and cybersecurity scope in the proposal.[S5] | Agility Arc publishes AMR, webhook, MES, WMS, WES and PLC integrations, along with fleet monitoring and remote support.[S6][S8] |
| Support | Boston Dynamics publishes training, service plans and a partner network; ANYbotics publishes structured onboarding. Local response terms, spares, warranty and lead time still belong in the contract.[S11][S12][S13] | MiR publishes warranty and paid care options, 24/7 premium support and more than 250 partner locations. The inspection top module may introduce a second support owner.[S14][S15] | Agility publishes on-site service, online support and real-time monitoring. GXO documents a multi-year RaaS agreement; response terms and warranty remain quote-specific.[S8][C3] |
Procurement hard gates
A single failed constraint should stop the shortlist.
Use these checks before weighting autonomy, cost or vendor preference.
Inspection payload
Specify thermal, acoustic, visual, gas, vibration or 3D sensing, then verify mounting, power, data, reach and calibration.
Hazardous certification
IP rating does not prove explosive-atmosphere suitability. Match ATEX, IECEx or the local equivalent to the exact site zone.
Operating environment
Validate temperature, dust, water, lighting, radio coverage, floor contamination and proximity to people or moving equipment.
Autonomy and charging
Define mission frequency, allowable interventions, docking locations, recovery behavior and the human escalation path.
Integration and support
Confirm CMMS, MES or PLC interfaces, cybersecurity review, local commissioning, spare parts and response-time commitments.
Model procurement matrix
Four reference platforms, compared field by field.
This is an evidence-normalization exercise, not a complete market shortlist. Every platform gets the same buyer questions, and missing public evidence remains visible instead of being scored as a capability.
Evidence reviewed 22 July 2026
Swipe to compare all four reference platforms →
| Buyer field | Quadruped Boston Dynamics Spot | Hazardous-area quadruped ANYbotics ANYmal X | AMR reference MiR250 | Humanoid reference Agility Robotics Digit |
|---|---|---|---|---|
| Best-fit route | Repeatable visual, thermal or acoustic inspection on stairs, grating and complex routes outside classified explosive zones.[S1][S2][C1] | Multi-floor inspection where industrial stairs and a Zone 1 IIB configuration are both hard requirements.[S3][S10][C2] | Clean, flat, repeatable factory routes where a supported inspection top module can be engineered.[S4] | Pilot only when inspection is inseparable from handling or manipulation in a human-designed workspace.[S6][C3] |
| Sensor payload | The product page lists 14 kg; the current support specification lists 20.43 kg as the maximum recommended mass. Power, mounting and API interfaces are published.[S1][S2] | Standard pan-tilt payload includes zoom, thermal, microphone, spotlight and LiDAR. Up to two compatible gas sensors are optional.[S3][S10] | The 250 kg load surface supports a custom top module, but MiR250 is a transport AMR rather than a turnkey inspection package.[S4] | A 35 lb carrying capacity is published. The reviewed sources do not define a turnkey inspection sensor interface, mounting standard or calibration workflow.[S6][S9] |
| Stairs and terrain | Published stair capability with a 300 mm maximum step height; intended for uneven industrial routes and grating.[S1][S2] | Published for open and grated industrial stairs, slopes, narrow spaces, and rough, wet or slippery terrain.[S3][S10] | Flat-floor AMR with a published ±5% incline limit. It cannot climb stairs; multi-floor use needs a separately validated elevator workflow.[S4] | Do not assume stair readiness: the reviewed commercial sources do not publish a factory stair acceptance specification.[S6][C3] |
| Hazardous-area evidence | IP54 is published, but the reviewed Spot product and support pages do not publish ATEX or IECEx approval.[S1][S2][N1][N3] | IP67 and Zone 1 IIB are published. Markings shown are IECEx: Ex db eb ib op is pxb sb IIB T4 Gb; ATEX: II 2G IIB T4.[S3][S10][N1][N3] | IP21 and indoor-only, with floors specified as free of water, oil and dirt. ISO 3691-4 does not cover potentially explosive environments.[S4][N2] | The reviewed Digit sources do not publish ATEX or IECEx approval. A classified area fails the shortlist without configuration-specific certification.[S6][N1][N3] |
| Runtime and autonomy | About 90 minutes typical runtime, or about 60 minutes while powering payloads in the support specification. Autonomous missions and docking are published.[S1][S2] | The V1 technical sheet lists 60–120 minutes, autonomous route replanning and return-to-dock charging in a safe zone.[S10] | Up to 13 hours active at maximum payload and 17.5 hours without payload, with mapped routing and centralized fleet control.[S4][S5] | Four-hour battery capability, autonomous docking and Arc fleet monitoring are published; inspection-task autonomy still needs a site pilot.[S6][S8] |
| Integrations | Software API and hardware interface documentation are public. Confirm Orbit, CMMS, historian and cybersecurity scope for the quoted stack.[S1][S2] | gRPC server API exports to maintenance systems, data portals and digital twins; ROS and C++ interfaces support custom modules.[S10] | Open REST interface and MiR Fleet are published. Confirm the exact ERP, WMS, MES, PLC, door and elevator interfaces in the proposal.[S5] | Arc publishes AMR, webhook, MES, WMS, WES and PLC integration; GXO confirms Digit working with existing AMRs in a live deployment.[S6][S8][C3] |
| Customer deployment evidence | National Grid reports two Spot robots and visual and thermal inspection in an energized valve hall after site-specific testing.[C1] | PETRONAS documents co-development, a commercial agreement and a commitment to scale ANYmal X across its facilities.[C2] | The reviewed primary evidence establishes a transport platform, not a turnkey inspection deployment. Require a reference using the proposed sensor top module.[S4] | GXO documents a live multi-year RaaS deployment moving totes with AMRs. Agility later reports more than 100,000 totes; that count is vendor-published.[C3][S7] |
| Service footprint | Online and in-person training, customer support and certified reseller, integration and support partners are published. Local capability varies by region and partner.[S12][S13] | ANYbotics publishes structured onboarding and regular Customer Success support. Named local service coverage is not stated on the reviewed pages.[S11] | MiR publishes 24/7 premium support and more than 250 partner locations worldwide; confirm which local partner owns the complete top module.[S14][S15] | Agility publishes white-glove delivery, training, online support, real-time monitoring and rapid on-site response through a global support infrastructure.[S8] |
| Warranty and SLA | An extended service plan is published. The reviewed public pages do not state a base warranty term or a response-time SLA; both require the quote and contract.[S12] | The reviewed public pages do not state warranty duration, uptime commitment, spares entitlement or response-time SLA. Quote required.[S3][S11] | A 15-month standard warranty is published. Paid extensions, 24/7 technical support, repairs and spare parts are available; site response time remains contract-specific.[S14] | Support is published, but the reviewed pages do not state warranty duration, uptime credits or response-time SLA. Quote required.[S8] |
| Commercial route | Quote required. The reviewed product page directs buyers to sales and does not publish a current list price.[S1][S12] | Quote required. ANYbotics describes a custom offer based on the facility and inspection application; price is not published.[S10] | Quote required for the robot, inspection top module and service plan. Public service options are ordered through MiR or its partner network.[S4][S14][S15] | Quote required. GXO confirms a multi-year RaaS commercial route; no public list price appears in the reviewed sources.[C3] |
| Lead time and TCO owner | Lead time is not public. The contract should assign hardware, payload, software, commissioning, repairs and lifecycle support across Boston Dynamics and partners.[S12][S13] | Lead time is not public. The custom offer should name commissioning, certificate maintenance, consumables, spares, software and support ownership.[S10][S11] | MiR Care uses a fixed annual fee, but public pricing and lead time are absent. Resolve robot, top-module and integrator ownership in one support matrix.[S14][S15] | RaaS may bundle parts of lifecycle cost, but scope and lead time are not public. Define deployment, maintenance, scaling and exit obligations in the proposal.[C3][S8] |
| Open procurement evidence | Obtain the quoted hardware revision, final payload derating, hazardous-area position, local SLA, warranty schedule and delivery date.[S1][S2][S12] | The product page says 2026 specifications are coming, while the detailed sheet is V1 from August 2022. Obtain the current configuration, certificate number and schedule, runtime and SLA.[S3][S10] | Obtain the sensor-mast design, calibration owner, elevator test, cybersecurity approval, system safety acceptance and top-module warranty.[S4][S5][N2] | Obtain inspection-interface evidence, stair acceptance, hazardous-area position, task reliability, local response terms and measurable pilot thresholds.[S6][S8][C3] |
Qualification workflow
Five checks that can disqualify a platform
Put pass/fail evidence ahead of weighted scoring. A high feature score cannot rescue a failed route, certificate or service gate.
Download the factory inspection RFP checklist- 01
An AMR fails if the route requires stairs and there is no validated elevator or alternate route.
- 02
Any robot fails if its exact model and configuration lacks the certificate required for the site's hazardous zone.
- 03
A platform fails if the complete sensor stack exceeds its payload, power, mounting, reach or calibration limits.
- 04
A robot fails if the proposed autonomy cannot recover safely from blocked routes, lost communications or a failed dock.
- 05
A vendor proposal fails if commissioning ownership, cybersecurity, local service, spares, warranty and response times remain unclear.
Buyer answers
Factory inspection robot questions
Which robot type is best for factory inspection?
There is no universal winner. Quadrupeds usually deserve first review for stairs and uneven routes, AMRs for clean flat routes and long runtime, and humanoids when inspection is inseparable from manipulation. The exact site gates and model evidence should decide.
Can an AMR inspect more than one floor?
An AMR cannot climb stairs. Multi-floor operation is possible only when the route includes a compatible elevator integration or another validated transfer method, with safe recovery behavior when that dependency fails.
Does an IP rating make a robot safe in a hazardous area?
No. An IP rating covers ingress protection, not explosive-atmosphere approval. Procurement must match the exact robot configuration and certificate to the site's ATEX, IECEx or local hazardous-area classification.
When should a factory consider a humanoid?
Consider a humanoid pilot when the workflow requires both sensing and physical interaction with tools, totes, doors or controls designed for people. Require task evidence, a site safety case and written support commitments.
What should a factory inspection robot RFP include?
Include the route map, sensor and calibration requirements, environmental and hazardous classifications, autonomy and recovery targets, integration and cybersecurity scope, service coverage, commercial terms and measurable pilot acceptance criteria.
Methodology and next steps
Hard constraints first. Weighted fit second.
RoboZaps first removes robots that fail mobility, certification, sensor, environmental, integration or service requirements. Only eligible platforms should then be scored on autonomy, deployment effort, support, lead time and total cost.
A shortlist should explain why a robot qualifies, what could disqualify it, and which evidence still needs site validation.
Manufacturer claims are a starting point, not a substitute for a safety assessment, pilot or contractual service commitments.
Evidence sources
Manufacturer sources document vendor-published claims. Customer sources provide independent deployment context. Standards and regulator sources explain the certification boundary. None replaces site testing, certificate review or contractual evidence.
- S1 Spot product page
Manufacturer
Reviewed 22 July 2026
- S2 Spot current support specification
Manufacturer
Reviewed 22 July 2026
- S3 ANYmal X product page
Manufacturer
Reviewed 22 July 2026
- S4 MiR250 specifications
Manufacturer
Reviewed 22 July 2026
- S5 MiR software and fleet platform
Manufacturer
Reviewed 22 July 2026
- S6 Digit battery, docking, safety and Arc integrations
Manufacturer
Reviewed 22 July 2026
- S7 Digit commercial deployment
Manufacturer · Published 20 November 2025
Reviewed 22 July 2026
- S8 Agility service and support
Manufacturer
Reviewed 22 July 2026
- S9 Digit payload reference
Manufacturer
Reviewed 22 July 2026
- S10 ANYmal X technical specifications
Manufacturer · Published August 2022 (V1)
Reviewed 22 July 2026
- S11 ANYbotics deployment onboarding and support
Manufacturer
Reviewed 22 July 2026
- S12 Boston Dynamics Spot support FAQ
Manufacturer
Reviewed 22 July 2026
- S13 Boston Dynamics partner network
Manufacturer
Reviewed 22 July 2026
- S14 MiR Care service and warranty options
Manufacturer
Reviewed 22 July 2026
- S15 MiR service agreement and partner coverage
Manufacturer
Reviewed 22 July 2026
- C1 National Grid Spot inspection deployment
Customer · Published 28 January 2021
Reviewed 22 July 2026
- C2 PETRONAS ANYmal X commercialisation
Customer · Published 23 March 2022
Reviewed 22 July 2026
- C3 GXO Digit commercial agreement
Customer · Published 27 June 2024
Reviewed 22 July 2026
- N1 IECEx equipment scheme
Standards body
Reviewed 22 July 2026
- N2 ISO 3691-4
Standards body
Reviewed 22 July 2026
- N3 European Commission ATEX overview
Regulator
Reviewed 22 July 2026