Musk Claims SpaceX Could Reach Fable/GPT-6-Level Models in 2-3 Months
On September 24, Elon Musk replied to a user on X saying he is 'cautiously optimistic' that SpaceX could have a Fable/GPT-6-level model within 2-3 months — a rare direct tie between SpaceX and frontier model competition. The remark was reshared by @minchoi, @shyamalanadkat, @markk, @rohanpaulai and others, sparking wide discussion.
Confirmed
- Musk made the statement on X between September 24-25, as relayed by multiple users.
- On September 25 Musk elaborated: SpaceX's AI work is only about 3 years old, versus 6 years for Anthropic and 10 for OpenAI; if the 'second derivative' stays strong, SpaceX could reach a leading position within about 6 months. By the 2-3 month window, the target lands around year-end.
- When asked why only 'cautiously optimistic' and why still catching up, Musk did not directly respond.
- @thedealdirector commented that the months before Christmas are critical for 'SpaceXAI'; Musk had previously pushed integration between xAI and SpaceX.
Unconfirmed
- What the 'Fable/GPT-6-level model' refers to, its training scale, data, and evaluation criteria remain undisclosed. @petergyang explicitly noted the claim is unverified social-platform chatter.
- @danielmac8 and others treat it as a Musk-style, half-joking remark rather than a product commitment.
Why it matters
- The context: grok 4.7 was seen by some users as an xAI misstep, rushed out under pressure from OpenAI and Anthropic; Musk's remark can be read as a response to anxieties about xAI's competitive position.
- If SpaceX truly diverted resources into frontier model R&D, it would change xAI's role in Musk's AI portfolio — but there is no evidence for this yet, so watch rather than believe.
2026-09-24 ~ 2026-09-26 · 9 related posts
Primary sources
- [source] Musk claims SpaceX will have a Fable/GPT-6 level model in 2-3 months — elonmusk · 2026-09-24
- [source] Musk: SpaceX AI is 3 years old but could lead in about 6 months if acceleration holds — elonmusk · 2026-09-25
7 near-duplicate retellings: petergyang · shyamalanadkat · daniel_mac8 · minchoi · mark_k · thedealdirector · rohanpaul_ai