A crewed mission successfully lands humans on Mars before December 31, 2035.
Space agencies and private firms target crewed Mars exploration in the 2030s. Resolution requires at least one living human setting foot on Mars before 2036.
Across 6 frontier models answering independently, the panel has all but ruled it out: the median is 7%.
They broadly agree, 15 points between GPT at 18% and Qwen at 3%.
Nothing is settled until 22 Sept 2036, when the outcome is checked against sources and every number above gets a permanent score.
What each one said
-
GPTOpenAI
It turns on whether Starship reaches reliable orbital refueling and Mars-entry capability early enough for a 2030s launch window.
- NASA's current Moon-first architecture makes a 2030s Mars landing aspirational, not a funded, dated program.
- SpaceX must demonstrate high-cadence reuse, many tanker transfers, life support, and safe Mars EDL by roughly 2032.
- Apollo reached the Moon in under a decade, but Mars adds months-long transit and no human-rated return infrastructure; a funded 2030 launch would raise odds sharply.
18% -
GrokxAI
SpaceX Starship must reach reliable crewed Mars EDL and life-support in the 2031 or 2033 launch window.
- NASA’s Moon-to-Mars architecture still points to 2039+ and is budget-constrained; China lacks a heavy lander.
- Apollo-scale firsts took 8 years after hardware existed; Starship is still in suborbital tests with no ISRU or large-mass EDL demo.
- An uncrewed Starship Mars landing by 2030 would be the single event that most raises this probability.
18% -
GeminiGoogle
Achieving a human Mars landing by 2035 demands flawless Starship development and Artemis timelines that are already years behind.
- NASA's Moon-to-Mars roadmap targets the late 2030s or 2040s, while Artemis III/IV lunar landing delays push back Mars prep.
- SpaceX must first prove orbital refilling, long-duration life support, and Mars ISRU ascent across the 2028, 2031, and 2033 windows.
- A fully successful uncrewed Starship cargo return by the 2031 window would be required to realistically attempt crew in 2033 or 2035.
9% -
ClaudeAnthropic
No funded crewed Mars program has completed even uncrewed heavy-lift Mars return demos yet, and 2035 is far too soon.
- SpaceX's Starship has yet to achieve orbital refueling or a single Mars-bound flight, both prerequisites NASA and Musk cite as necessary before crewed missions.
- NASA's own roadmap targets crewed Mars missions in the late 2030s or 2040s at earliest, contingent on Artemis lunar milestones that are themselves delayed.
- Historical base rate: no first-ever crewed interplanetary mission has ever met an aggressive private-sector timeline; Musk's own Mars predictions have slipped repeatedly…
4% -
DeepSeekDeepSeek
No funded program exists to put boots on Mars by 2035; the critical path is money and life support, not rockets.
- NASA's Artemis is Moon-focused through the 2030s; its own Mars architecture remains unfunded concept work, not a program with a launch date.
- SpaceX's Starship has not reached orbit reliably, let alone demonstrated Mars EDL, orbital refueling, or a 2-year-class life support system.
- Every prior crewed first (Apollo, ISS) took 8-12 years from funded decision to flight; no such decision for Mars has been made as of 2026.
4% -
QwenAlibaba
Starship must achieve orbital refueling, life support, and Mars transit in under 9 years—each step has never been done.
- SpaceX's most optimistic timeline (2029 uncrewed, 2031 crewed) has slipped repeatedly; Starship hasn't reached orbit with payload as of late 2025.
- NASA's Artemis program won't return humans to the Moon before 2027 at earliest, and no Mars architecture is funded or selected.
- No crewed mission beyond low-Earth orbit has occurred since 1972; the jump from LEO to Mars transit requires solving radiation, life support, and landing at scale—none…
3%
6 of 6 models answered · 15 points between the highest and lowest. None was shown the market price.
Question sourced from a news sweep on 25 Sept 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.