The Complete List: Elon Musk’s 14 Children And Their Current Ages (2025 Update)

The family tree of tech mogul Elon Musk has expanded significantly in recent years, making headlines around the world. As of December 12, 2025, the billionaire CEO of Tesla, SpaceX, and X is the father of 14 known children, born to four different women, a number that has grown rapidly with recent births in 2024 and 2025. This comprehensive guide breaks down the full roster of the "Musk-eteers," detailing their names, mothers, and their precise ages in late 2025.

The latest additions, including the youngest child born in February 2025, solidify Musk’s public stance on the importance of combating global population decline, a theme he frequently discusses across his various platforms. From his eldest surviving children who are now in their twenties to his newest infant, here is the most current look at the complete and complex family structure of one of the world's most influential figures.

The Musk Family Roster: A Complete Biography of 14 Children

The following list details all 14 of Elon Musk’s children in chronological order, providing their mother and their current age as of December 2025. This includes the recent additions that have brought the total count to a surprising 14.

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• Nevada Alexander Musk
  • Mother: Justine Wilson
  • Born: 2002
  • Status: Tragically passed away from Sudden Infant Death Syndrome (SIDS) at 10 weeks old.
• Griffin Musk (Twin)
  • Mother: Justine Wilson
  • Born: April 2004 (via IVF)
  • Current Age: Approximately 21 years and 8 months.
• Vivian Jenna Wilson (Twin)
  • Mother: Justine Wilson
  • Born: April 2004 (via IVF)
  • Current Age: Approximately 21 years and 8 months. (Legally changed her name from Xavier Alexander Musk to Vivian Jenna Wilson in 2022).
• Kai Musk (Triplet)
  • Mother: Justine Wilson
  • Born: January 2006 (via IVF)
  • Current Age: Approximately 19 years and 11 months.
• Saxon Musk (Triplet)
  • Mother: Justine Wilson
  • Born: January 2006 (via IVF)
  • Current Age: Approximately 19 years and 11 months.
• Damian Musk (Triplet)
  • Mother: Justine Wilson
  • Born: January 2006 (via IVF)
  • Current Age: Approximately 19 years and 11 months.
• X Æ A-XII (X)
  • Mother: Grimes (Claire Boucher)
  • Born: May 4, 2020
  • Current Age: Approximately 5 years and 7 months.
• Strider Musk (Twin)
  • Mother: Shivon Zilis
  • Born: November 2021
  • Current Age: Approximately 4 years and 1 month. (Born just weeks before Exa Dark Sideræl).
• Azure Musk (Twin)
  • Mother: Shivon Zilis
  • Born: November 2021
  • Current Age: Approximately 4 years and 1 month.
• Exa Dark Sideræl (Y)
  • Mother: Grimes (Claire Boucher)
  • Born: December 2021 (via surrogate)
  • Current Age: Approximately 4 years.
• Techno Mechanicus (Tau)
  • Mother: Grimes (Claire Boucher)
  • Born: June 2022 (via surrogate)
  • Current Age: Approximately 3 years and 6 months. (His existence was revealed in Walter Isaacson’s 2023 biography).
• Arcadia Musk
  • Mother: Shivon Zilis
  • Born: February 28, 2024
  • Current Age: Approximately 1 year and 9 months. (The third child with Zilis).
• Romulus Musk (Claimed)
  • Mother: Ashley St. Clair
  • Born: September 2024
  • Current Age: Approximately 1 year and 3 months. (Conservative journalist Ashley St. Clair publicly claimed Musk is the father in early 2025).
• Seldon Lycurgus Musk
  • Mother: Shivon Zilis
  • Born: February 28, 2025
  • Current Age: Approximately 10 months. (The fourth child with Zilis and Musk’s youngest known child).

The Four Mothers: Context and Co-Parenting Dynamics

Elon Musk’s large family is spread across four co-parenting relationships, each with a unique history and dynamic. Understanding the mothers is key to grasping the full scope of the Musk family tree.

Justine Wilson: The Eldest Children and the Foundation

Canadian author Justine Wilson was Musk’s first wife, married from 2000 to 2008. They were the parents of his first child, Nevada Alexander, whose tragic death led them to use In Vitro Fertilization (IVF).

The use of IVF resulted in the birth of the 2004 twins, Griffin and Vivian Jenna Wilson, followed by the 2006 triplets, Kai, Saxon, and Damian. These five children are the oldest surviving members of the Musk family. Vivian's decision to legally change her name in 2022 was a significant public event, reflecting her desire to distance herself from her biological father.

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Grimes: The Unconventional Names and Public Scrutiny

Musk’s relationship with musician Grimes (Claire Boucher) has been one of the most publicly scrutinized. They share three children, each with uniquely complex names that reflect their parents' fascination with technology, space, and mythology.

Their first child, X Æ A-XII (X), was born in May 2020. He is often seen with his father at major events, including those related to SpaceX and X (formerly Twitter). Their second child, a daughter named Exa Dark Sideræl (Y), was born via surrogate in December 2021. The third child, Techno Mechanicus (Tau), was revealed in the 2023 biography by Walter Isaacson, with a birth year cited as June 2022.

Shivon Zilis: The Neuralink Executive and Four Children

Shivon Zilis is an executive at Musk's neurotechnology company, Neuralink, and a prominent figure in the artificial intelligence (AI) world. Her relationship with Musk became public knowledge in 2022 when it was revealed they had secretly welcomed twins, Strider and Azure, in November 2021.

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The Zilis-Musk family expanded rapidly. They welcomed their daughter, Arcadia Musk, on February 28, 2024, followed by their son, Seldon Lycurgus Musk, born exactly one year later on February 28, 2025. This makes Seldon the youngest known member of the Musk family, just 10 months old as of this December 2025 update.

Ashley St. Clair: The Latest Claimed Addition

The most recent and debated addition to the family is Romulus Musk, the son of conservative journalist and influencer Ashley St. Clair. St. Clair publicly announced in early 2025 that she and Musk shared a child, Romulus, who was born in September 2024. This claim, which brought the total count to 14, has been widely reported by major outlets, adding another layer of complexity to the family dynamics.

The Impact of a Large Family on the Tech Empire

Musk’s growing family is not just a personal matter; it is intrinsically linked to his public philosophy. He has repeatedly stressed that a declining birth rate is one of the greatest threats to human civilization, a belief that many see as a driving force behind his personal choices.

The sheer logistics of co-parenting 13 surviving children with four different women—all while running global companies like Tesla, SpaceX, and X—is a monumental feat. The ages of the children now span two decades, from the college-aged twins and triplets to the three infants born within the last two years.

The newest generation, including Arcadia, Romulus, and Seldon Lycurgus, highlights a continuing trend of private births that are only later confirmed or revealed. The focus on family and generational continuity remains a powerful, if unconventional, narrative in the life of the world's most famous futurist.