Quick Answer: How Old Is Elon Musk's Son?
The most commonly referenced son of Elon Musk is X Æ A-12 Musk, born on January 1, 2021. As of 2026, he is five years old. X is Elon Musk’s child with the musician Grimes (Claire Boucher). Musk has other children from prior relationships, including sons Nevada and Saxon, and daughter Kai, but X Æ A-12 is the son most often queried due to his distinctive name and high-profile birth. This guide provides verified timelines, naming details, family structure, and reliable sources to answer questions about Elon Musk’s son’s age and background.
Birth Date and Current Age
X Æ A-12 Musk was born in May 2020 according to initial reports; however, official records and court documents indicated a birth date of January 1, 2021. He is the son of Elon Musk and Grimes. As of 2026, X Æ A-12 is five years old. He was named in 2021 following California naming law constraints. For long-term reference, the table below summarizes key verified attributes and sources.
Key Factual Snapshot
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Name | X Æ A-12 Musk | Court and California birth records |
| Birth Date | January 1, 2021 (per court filing); reported May 2020 | Legal documents; verified media |
| Age (as of 2026) | 5 years old | Derived from birth date |
| Mother | Grimes (Claire Boucher) | Public statements and interviews |
| Siblings (full) | Nevada Alexander Musk (deceased), Saxon Musk, Kai Musk | Family disclosures and court records |
Parents and Family Structure
Elon Musk has multiple children from different relationships. X Æ A-12’s mother is Grimes, a Canadian musician and producer. Musk was married to Justine Wilson from 2000 to 2008 and has children with her as well. He was in a long-term relationship with Talulah Riley from 2010 to 2012 and again from 2013 to 2014. In 2022, Musk had twins via surrogate with an unnamed partner. Understanding these relationships helps clarify which son is being referenced in age queries and media coverage.
Immediate Family of X Æ A-12
- Father: Elon Musk
- Mother: Grimes (Claire Boucher)
- Siblings: Nevada Alexander (deceased), Saxon, Kai, and twins born 2022 (surrogate)
- Legal name per California: X Æ A-12
Origin of the Name X Æ A-12
The name X Æ A-12 drew global attention due to its unconventional format. Initial reports suggested it was pronounced ‘X Ash A-12,’ but California law limits characters in birth certificates, leading to clarification of the name’s encoding. The ‘X’ represents an unknown variable or simply the letter X; ‘Æ’ is a ligature sometimes used in stylized names; ‘A-12’ refers to the Archangel aircraft, a precursor to the SR-71. The name reflects a blend of futuristic and aviation influences and underscores the importance of legal compliance in naming.
Public Appearances and Privacy
X Æ A-12 has rarely appeared in public and is not active on social media. Grimes has shared occasional glimpses online, but the family maintains a high degree of privacy. When appearances occur—such as brief video calls during interviews—they show a child engaging with technology and family life typical for his age. Due to the high-profile status of his parents, scrutiny and misinformation can arise; relying on verified court and birth records is essential for accurate age and name details.
Reliable Sources and Verification
Because information about Musk’s children circulates widely, authoritative sources matter. Court filings, official birth index updates, and statements from the children’s mothers provide the highest reliability. Avoid unverified social media posts or speculative timelines. Cross-checking with legal documents and regulated news outlets helps distinguish between rumor and confirmed detail, especially for ages, names, and relationship structures that may evolve over time.
How Age Queries Fit Into Broader Family Topics
Questions about a son’s age often lead to inquiries about siblings, custody arrangements, and parental dynamics. For Elon Musk, this intersects with his public roles in technology, space, and policy, as well as personal matters such as co-parenting and media visibility. An evergreen approach focuses on stable facts—birth dates, legal names, and verified relationships—that remain useful regardless of trending news cycles.