Is Grok 4.8 out yet? Release date and what we know
Not out. Elon Musk wrote on September 14, 2026 that it's a 2.5T model trained on xAI's new C++ software stack, finishing training that week before reinforcement learning. No date and no price.
- Status
- Announced
- Lab
- xAI
- Price and context window
- Not published
What we've written about Grok 4.8
Musk says Grok Bot will route tasks to Claude Opus 5.5, Midjourney and Suno
Two weeks after calling Grok 4.7 its most powerful model for coding, SpaceXAI says its agent will route work to Anthropic.
Musk is "cautiously optimistic" SpaceX will have a Fable/GPT-6 level model in 2 to 3 months
Grok 4.7 trails Fable 5.1 by 20 points on SpaceXAI's own terminal-work test, and Musk gives SpaceX two to three months to close it.
Grok 4.7, Grok 4.8 and Grok Build: which Grok is out and what each one is for
Grok 4.7 shipped ten days after Musk said it needed a few more days, and the next one has a size but no date.
Trump says the only guardrail AI needs is a strong president, and mocks Dario Amodei
He told reporters in Ireland that whoever wins AI wins, then called the fear of it a hoax seven times in one Monday.
The day after agreeing AI should slow down, Musk said Grok 4.8 finishes training this week
Grok 4.7 still isn't out, Grok 5 is his answer for AGI, and neither OpenAI nor Anthropic lists a size to set 2.5T against.
What is Grok 4.8?
Grok 4.8 is a model from xAI, built in the US. The lab has said it's coming. You can't use it yet.
When is Grok 4.8 coming?
No date. xAI hasn't given one, so we haven't made one up.
More from xAI
Grok 4.7
- in /1M
- $2
- out /1M
- $6
- context
- 500K
Grok 4.6
- in /1M
- $2
- out /1M
- $6
- context
- 500K
Grok 4.5
- in /1M
- $2
- out /1M
- $6
- context
- 500K
Grok Build 0.1
- in /1M
- $1
- out /1M
- $2
- context
- 256K
Grok 5
No price or context window published yet
Grok 4.3
- in /1M
- $1.25
- out /1M
- $2.50
- context
- 1M
More news: xAI news and Grok updates
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