Each layer now has better public anchors than old-cycle demo videos, but each still needs its own proof-quality bridge. Designed capacity, customer-site KPI, low-cost bodies, filing-backed supplier revenue and model releases should not be collapsed into S5 economics.
S3/S4 platform-formation signal
AI / model / data stack
Current anchor: NVIDIA Isaac GR00T plus Physical Intelligence π0 / openpi / π0.5 / π0.7 and Skild AI official posts make robot AI a trackable infrastructure layer.
What it proves: Robot AI is becoming observable through model, tooling, simulation and data-stack releases rather than only isolated demos.
What it does not prove: Software revenue, attach rate, customer ROI, autonomy economics, gross margin or paid multi-OEM adoption.
S5 upgrade evidence: Paid model/software contracts, deployed robot counts using the stack, uptime/intervention metrics, ARR or licensing economics and gross margin.
S3/S4 cost-access signal
Hardware cost / access
Current anchor: Unitree official pages list R1 AIR from US$4,900, R1 from US$5,900, G1 from US$13.5K and H2 at US$29,900.
What it proves: Cheaper humanoid bodies can lower developer, education, research and pilot experimentation cost.
What it does not prove: Industrial reliability, gross margin, customer mix, support cost, shipment scale or customer payback.
S5 upgrade evidence: Product-line shipments, customer mix, uptime, intervention rate, repeat orders, gross margin, support cost and customer ROI/payback.
S4 manufacturing-infrastructure / capacity-intent signal
Tesla Optimus
Current anchor: Tesla's Q1 2025-Q1 2026 Form 8-K Exhibit 99.1 sequence moves from pilot-line language to Fremont 1M/year and Texas long-term 10M/year designed capacity.
What it proves: Tesla has disclosed increasingly concrete Optimus manufacturing infrastructure and designed-capacity ambition.
What it does not prove: Actual production rate, accepted units, yield, runtime, external paid customers, robot revenue or unit economics.
S5 upgrade evidence: Actual Optimus output, production yield, internal deployment count, uptime/intervention, internal factory ROI, external paid customers, pricing, revenue and gross margin.
S4 customer-site + manufacturing KPI signal
Figure AI
Current anchor: Figure reports BMW deployment KPI of 90,000+ parts and 1,250+ runtime hours, plus BotQ manufacturing KPI of 350+ Figure 03 robots delivered and >80% EOL first-pass yield.
What it proves: Figure has one of the clearest public deployment/manufacturing KPI curves among private humanoid OEMs.
What it does not prove: Contract value, customer-confirmed ROI/payback, robot count by customer site, repeat-order economics, intervention rate, gross margin or economically utilized fleet.
S5 upgrade evidence: Customer-confirmed ROI/payback, contract value, repeat order, deployed robots by site, uptime, intervention rate, service cost, production yield over time and gross margin.
S4 filing-backed commercial-application / early-scaling signal
UBTECH / 优必选
Current anchor: UBTECH's 2025 annual report disclosed RMB 820.557m full-size embodied humanoid revenue, 1,079 units sold and more than 6,000 annualized full-size humanoid capacity at end-2025.
What it proves: A listed company has disclosed humanoid revenue, unit sales and capacity in filings.
What it does not prove: Humanoid-specific gross margin, customer ROI, uptime/intervention, repeat-order economics, warranty/service cost or cash-flow durability.
S5 upgrade evidence: Humanoid-segment margin, named utilization data, repeat orders, positive unit economics, service/warranty cost, cash-flow path and customer ROI/payback.
S4 filing-backed supplier-validation signal
Leaderdrive / 绿的谐波
Current anchor: Leaderdrive's 2025 annual report disclosed RMB 570.714m revenue, RMB 422.528m industrial / embodied-intelligence robot component revenue and 425,158 harmonic reducers sold; its 2026-06-09 abnormal-trading announcement also warned there was no undisclosed major matter behind a +36.00% share-price move.
What it proves: Robot-relevant revenue/category growth and shipment growth are real filing-backed supplier signals.
What it does not prove: Named humanoid OEM exposure, humanoid-only revenue, single-robot value content, contract value, customer ROI or S5 humanoid commercialization.
S5 upgrade evidence: Named OEM relationship, humanoid-specific revenue/order value, margin durability, single-robot value content, repeat orders and capacity tied to humanoid demand.