SoftBank's $200 million bet on retrofit excavator AI is the biggest funding round construction robotics has ever seen
SoftBank invested $200 million in Gravis Robotics, valuing the excavator-retrofit startup at roughly $1 billion and confirming that the market is betting on autonomy kits bolted to existing fleets, not new autonomous-native machines.
SoftBank put $200 million into Gravis Robotics, a Zurich startup that retrofits autonomy onto excavators contractors already own, in a Series A round the company says is the largest ever raised by a construction robotics business. Multiple outlets report the deal values Gravis at roughly $1 billion. For any contractor watching the buy-new-machine-versus-retrofit debate, this is the clearest signal yet of where the capital is landing.
What is Gravis actually selling?
The product is the Gravis Rack — a control kit that bolts onto heavy equipment already on a jobsite rather than requiring a purpose-built autonomous machine. Reporting puts supported brands at Caterpillar, John Deere, Volvo, JCB, Hitachi, Case, Develon, Sumitomo, and Yanmar. The kit combines LiDAR, cameras, GPS, and hydraulic sensors to read ground conditions and run tasks like trenching, truck loading, and stockpile handling, working either as an operator-assist copilot or in full autonomy. Gravis claims a 30% productivity gain over manual operation — a figure the company reports itself, not one verified by a third party.
Founded in 2022 out of ETH Zurich by CEO Ryan Luke Johns and CTO Dominic Jud, with ETH robotics professor Marco Hutter as a co-founder and board member, the roughly 75-person company says its systems now run in seven countries across the UK, US, EU, Latin America, and Asia. Named customers include Holcim, using the system for quarry material handling — stockpile management and loading trucks and screeners — and Taylor Woodrow, which deployed autonomous excavation at a Manchester Airport infrastructure project, reported as the UK's first large-scale use of the technology on an active construction site. Gravis also has a partnership with HD Hyundai.
Why does this matter if you're not buying a Gravis kit?
Three weeks ago, Komatsu and its EARTHBRAIN subsidiary struck a partnership with a different startup, AIM Intelligent Machines, on the same premise: retrofit the dozer or excavator a contractor already owns instead of selling them a new autonomous-native machine. Now the largest funding round in construction robotics history has gone to a second company running the identical playbook.
| Signal | Date | What it says about the market |
|---|---|---|
| Komatsu/EARTHBRAIN + AIM Intelligent Machines partnership | Late July 2026 | A major OEM is betting retrofit autonomy beats new-machine autonomy |
| Gravis Robotics' $200M SoftBank round | Aug. 17, 2026 | A $1B valuation says investors agree at scale |
That convergence matters for procurement planning even if you never touch either vendor: it tells you the industry consensus is settling on retrofit kits that work across brands, not closed autonomous product lines tied to one OEM. If you're timing an equipment refresh around eventual autonomy, this is evidence you don't need to wait for an autonomous-native machine to be viable — plan on the kit coming to the iron you already run.
Does SoftBank's involvement change anything for a Gravis customer?
It's worth watching, not worrying about yet. Bloomberg reported in July, citing people familiar with the discussions, that SoftBank was weighing a staged acquisition of Gravis worth $500 million or more, to be placed under a new SoftBank robotics holding company called Roze as part of its broader "Physical AI" push — SoftBank never confirmed those talks. What actually happened on August 17 was a straight $200 million investment, not a buyout, and at a valuation roughly double the acquisition figure reported a month earlier.
That history is still a reason to ask a direct question before signing a multi-year fleet contract with Gravis or any similarly funded startup: who owns this company in three years, and does the contract survive a change of control? A construction-robotics startup that just became a target for one of the world's most aggressive AI-infrastructure investors is a startup whose roadmap, pricing, and exclusivity terms could shift with its next capital event — worth a clause in the contract, not a reason to avoid the technology.
The bigger takeaway is simpler: retrofit autonomy for heavy equipment just went from a promising pitch to a business two of the best-funded names in construction and technology are willing to back at scale. The capital math on waiting for a fully autonomous fleet purchase is getting harder to justify next to the cost of a kit on the excavator you already own.
- What did SoftBank actually invest in?
- SoftBank put $200 million into Gravis Robotics, a Zurich-based startup founded in 2022 as an ETH Zurich spinout, as the sole investor in a Series A round announced August 17, 2026. Gravis says it's the largest Series A ever raised by a construction robotics company, and multiple outlets report the round values Gravis at roughly $1 billion.
- What does Gravis Robotics' technology actually do?
- Gravis sells the Gravis Rack, a hardware kit that retrofits onto excavators and other heavy equipment a contractor already owns — reported to work on Caterpillar, John Deere, Volvo, JCB, Hitachi, Case, Develon, Sumitomo, and Yanmar machines. It uses LiDAR, cameras, GPS, and hydraulic sensors to run tasks like trenching, loading, and stockpile handling, either as an operator-assist copilot or fully autonomously. Gravis claims up to a 30% productivity gain over manual operation — a company figure, not an independently audited one.
- Is this the same announcement as Komatsu's autonomous-retrofit deal with AIM Intelligent Machines?
- No — they're separate companies and separate deals. Komatsu and EARTHBRAIN partnered with AIM Intelligent Machines on dozer and excavator retrofits, announced in late July 2026. Gravis Robotics is a different startup that raised its own $200 million round from SoftBank on August 17. The fact that both are chasing the same retrofit-not-replace model within a few weeks of each other is the more significant signal.
- Is SoftBank buying Gravis outright?
- No, not with this round. Bloomberg reported in July 2026, citing people familiar with the talks, that SoftBank was weighing a staged acquisition of Gravis worth $500 million or more, to be folded into a new SoftBank robotics holding company called Roze. SoftBank has not confirmed those acquisition talks. What actually closed on August 17 was a $200 million minority investment — a bigger number than the earlier acquisition figure, but a primary funding round, not a buyout.
- Where is Gravis technology actually running on jobsites today?
- Gravis says its systems operate in seven countries across the UK, US, EU, Latin America, and Asia. Named deployments include a Taylor Woodrow infrastructure project at Manchester Airport — reported as the UK's first large-scale use of autonomous excavation on an active construction site — and quarry material handling work with Holcim, alongside a partnership with HD Hyundai.