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The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | |||
|---|---|---|---|
| Company | JAXA / Mitsubishi Heavy Industries | Arianespace / ArianeGroup | ULA |
| Country | 🇯🇵 Japan | 🇪🇺 Europe | 🇺🇸 USA |
| Status | Active | Active | Retired |
| Vehicle class | Heavy | Heavy | Medium |
| Propellant | LH₂ / LOX (LE-9 first stage + LE-5B-3 second stage) | LH₂ / LOX (Vulcain 2.1 + Vinci) | RP-1 / LOX (RD-180); LH₂ / LOX (Centaur III) |
| Reusable | No | No | No |
| Stages | 2 | 2 | 2 |
| First flight | 2024 | 2024 | 2002 – 2024 |
| Payload to LEO | 16,500 kgas of [1]H3-24 (2 SRB-3 + 4 LE-9 engines) configuration. H3-30 baseline: 16,500 kg. | 21,650 kgas of [1]Ariane 62 (2 boosters) / Ariane 64 (4 boosters); 64 offers higher GTO capacity ↑ Best | 18,850 kgas of [1]401 configuration. Maximum 401/551 stretch to 20,520 kg. 551 max 29,420 kg (5-solid boosters). |
| Payload to GTO | 6,500 kgas of [1] | 11,500 kgas of [1]Ariane 64 configuration. Ariane 62 delivers ~4,500 kg to GTO. ↑ Best | 8,900 kgas of [1]551 configuration (maximum performance) |
| Height | 57 mas of [1] | 56–63 mas of [1]56 m (Ariane 62) / 63 m (Ariane 64 with 4 solid boosters) ↑ Best | 58.3 mas of [1]401 configuration |
| Liftoff mass | 574 tas of [1]H3-24S configuration | 530–860 tas of [1]530 t (A62) / 860 t (A64) ↑ Best | 334 tas of [1]401 configuration without strap-ons |
| Success rate | 75%as of [2]~6/8 successes. TF1 (Feb 2023) first flight failure (LE-9 ignition issue, DAICHI-3 lost). F8 (Dec 23, 2025) QZS-5 lost to 2nd-stage relight anomaly. | 100%as of [2]7/7 missions through VA268 Amazon Leo (Apr 30, 2026); Ariane 64 debut Feb 12, 2026 ↑ Best | 100%as of [2]99/99 mission successes from Aug 2002 through Apr 2024 (final Kuiper flight). Only launch vehicle with 100% success across 99 missions. ↑ Best |
| Total flights | 8as of [2] | 7as of [2] | 99as of [2]Retired after KA-01 (Amazon Kuiper satellite testbed, Apr 9, 2024) ↑ Best |
| Cost / kg LEO | ~$5,500/kgas of [1]Target unit price ¥5B (~$35M at ¥145/$); roughly half H-IIA's per-launch cost ↓ Cheapest | ~$7,500/kgas of [1]Estimate based on ~$115M A62 / ~$165M A64 list prices | — |
| Summary | Japan's next-generation flagship rocket designed to halve H-IIA costs. Uses three LE-9 engines burning liquid hydrogen — the highest-performing expander-cycle engines in the world. First successful flight was TF2 (Feb 17, 2024). HTV-X1 cargo mission to ISS (Oct 2025) demonstrated operational readiness. | Europe's flagship launcher replacing Ariane 5. The Vinci re-ignitable upper stage enables multi-orbit missions and controlled deorbit. Primary customers: Amazon Kuiper, European government payloads, and ESA science missions. | ULA's workhorse from 2002–2024. Launched Mars Science Laboratory (Curiosity), OSIRIS-REx, Solar Orbiter, Lucy, New Horizons, and the Boeing Starliner. Its Russian RD-180 first-stage engine became a political liability after 2022; last flight was the Amazon Kuiper testbed on Apr 9, 2024. |
28 launch vehicles across 10 countries — active, retired, and in development — with primary-source citations from manufacturer user guides and agency press kits. Pure URL state: bookmark or share the link and the comparison reproduces exactly.