Pick up to 4 launch vehicles to compare side-by-side. State lives in the URL — share the link and the comparison loads exactly as you left it.
The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | |||
|---|---|---|---|
| Company | JAXA / Mitsubishi Heavy Industries | SpaceX | ULA |
| Country | 🇯🇵 Japan | 🇺🇸 USA | 🇺🇸 USA |
| Status | Active | In Development | Retired |
| Vehicle class | Heavy | Super Heavy | Medium |
| Propellant | LH₂ / LOX (LE-9 first stage + LE-5B-3 second stage) | CH₄ / LOX | RP-1 / LOX (RD-180); LH₂ / LOX (Centaur III) |
| Reusable | No | Yes | No |
| Stages | 2 | 2 | 2 |
| First flight | 2024 | 2023 | 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. | ~150,000 kgas of [1]SpaceX projected max payload in fully expendable mode; ~100,000 kg reusable ↑ 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] | ~21,000 kgas of [1]Reusable configuration estimate ↑ Best | 8,900 kgas of [1]551 configuration (maximum performance) |
| Height | 57 mas of [1] | 121 mas of [1]Version 2 (V2) full stack Ship + Super Heavy ↑ Best | 58.3 mas of [1]401 configuration |
| Liftoff mass | 574 tas of [1]H3-24S configuration | ~5,000 tas of [1] ↑ 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. | ~55%as of [2]IFT-1 through IFT-11; ~6 complete mission successes, remainder partial or vehicle lost. No orbital payload deployment yet. | 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] | 11as of [2]IFT-1 (Apr 2023) through IFT-11 (May 2026 target). IFT-10 (Aug 2025) achieved full mission: booster caught + Ship splash-down. | 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 | ~$600/kgas of [1]SpaceX target figure; not yet achieved in operational configuration ↓ Cheapest | — |
| 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. | Largest and most powerful rocket ever flown. Super Heavy booster uses 33 Raptor engines. V3 Ship introduced Aug 2025. Mechazilla caught the booster on IFT-5 (Oct 2024) and IFT-10 (Aug 2025). Primary vehicle for Artemis HLS lunar landing (Artemis III planned 2026). | 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.