The 1 Metric That Separates Joby From Archer in the Race to FAA Certification

Joby Aviation is positioned ahead of Archer Aviation in FAA certification, having reached stage five of the five-stage process versus Archer completing stage three. Joby's revenue rose from less than $1 million in 2024 to $53.4 million in 2025 and is forecast to reach $119.5 million in 2026, compared with Archer's expected $15.1 million; Joby trades at 51x 2026 sales versus Archer at 278x. Although Archer is projected to generate more 2028 revenue ($511.5 million versus Joby's $434.8 million), the article favors Joby due to its certification lead, more efficient aircraft design, and potentially higher-margin vertically integrated air-taxi model.

Analysis

The headline valuation comparison is economically misleading: neither company has yet demonstrated recurring aircraft revenue, positive unit contribution, or scalable certification-to-delivery conversion. JOBY’s non-flight revenue can reduce apparent execution risk and extend its runway, but it should not be capitalized like mature transportation revenue; the key rerating event remains certification followed by evidence that utilization, charging turnaround, and insurance costs support attractive route economics.

JOBY deserves a relative premium into the next certification milestones because each completed approval gate reduces the probability-weighted financing discount applied to a capital-intensive network model. The offset is that vertical integration converts regulatory success into a substantial fleet, vertiport, maintenance, and working-capital funding requirement. ACHR’s OEM model has more upside if third-party operators fund fleet ownership, but its long-term revenue estimates implicitly require both production certification and financed customer demand—two distinct bottlenecks that can fail independently.

Over the next 1-3 months, FAA milestone disclosures, cash-burn guidance, and manufacturing-capex commitments matter more than nominal sales forecasts. Over 6-18 months, the decisive competitive variable is not airframe performance claims but certified production throughput: Toyota’s industrial support could make JOBY the first credible volume platform, while Stellantis’ support is less valuable unless it translates into binding manufacturing capacity, purchase commitments, and customer financing. A broad risk-off move or delayed FAA guidance would likely pressure both equities disproportionately given long-duration cash flows.

Consensus is too focused on which platform launches first. First mover can be burdened by subsidizing network infrastructure and proving demand; an OEM follower could capture value if the first operator validates pricing and utilization. Conversely, ACHR’s apparent forward-value discount is not a bargain if projected deliveries depend on customers accepting residual-value and fleet-financing risk that has not yet been tested.

Key Decisions for Investors

• Initiate a small 1-3 month relative-value position: long JOBY / short ACHR in equal dollar amounts, sized at 50-75 bps gross. The trade expresses certification de-risking rather than sector beta; exit if ACHR announces a verifiable production-capacity commitment, firm funded customer orders, or a material FAA-stage catch-up.
• Do not underwrite either name on price-to-sales multiples. Add to JOBY only after management provides a credible bridge from certification to funded fleet deployment, including expected aircraft utilization, operating contribution margin, and incremental capital required; absent this, treat positive revenue revisions as low-quality de-risking.
• Use TM as the preferred second-order watch item rather than an immediate trade: confirmation of dedicated tooling, production volumes, or additional capital support would strengthen JOBY’s supply-chain advantage. A lack of such commitments alongside rising JOBY capex would instead flag dilution risk.
• Maintain UBER as a low-beta ecosystem beneficiary, not a primary eVTOL expression. Reassess only if route integration evolves into minimum-volume commitments or economics-sharing; without contractual demand guarantees, platform association has limited near-term earnings relevance.
• Set downside alerts for either company at the next quarterly cash-burn update: a material increase in annual cash use, a new equity raise before certification, or a pushout in commercial-service timing falsifies the near-term de-risking thesis and warrants closing relative longs.