Grok 5
SpaceXAI's next flagship — reportedly 6 trillion parameters, trained on a gigawatt-scale supercluster. Both the Q1 and Q2 2026 targets have now slipped; as of July 2026 there is still no launch date.
Update — 9 July 2026: Grok 4.5 shipped instead
While Grok 5 stays dateless, SpaceXAI released Grok 4.5 to the public on 9 July 2026 — the "Opus-class" workhorse at $2/$6 per 1M tokens with a 500K context window. It is now the shipping Grok flagship. Full Grok 4.5 specs, pricing & benchmarks →
Status: not yet released
This page tracks Grok 5 ahead of launch. Specifications below are reported or expected, not confirmed final figures — we update it as SpaceXAI publishes official details.
Grok 5 release date
Still unknown — and slipping. Elon Musk originally confirmed a Q1 2026 release; Q1 passed without a launch and expectations moved to Q2 2026. That window closed at the end of June with no launch either. On 9 July 2026 the company shipped Grok 4.5 instead — a strong signal Grok 5 is not imminent. As of July 2026, the only official confirmation that Grok 5 exists is a single line in xAI's January 2026 funding announcement stating the model is being trained. Treat any specific date as speculation until SpaceXAI says otherwise.
What we know about Grok 5
| Maker | SpaceXAI (formerly xAI) |
| Expected release | TBD — Q1 and Q2 2026 targets both missed; no official date |
| Parameters | Reported 6 trillion — Mixture-of-Experts |
| Scale claim | Largest publicly announced AI model to date |
| Modalities | Reported natively multimodal — text, image, audio, real-time video |
| Training hardware | Colossus 2 supercluster, Memphis, Tennessee |
| Benchmarks | None — model not yet released |
Calculate LLM API costs → This model has no confirmed USD per-token rate card, so it is not in the calculator — compare 16 published rate cards instead.
If the 6-trillion-parameter figure holds, Grok 5 would be the largest publicly announced AI model so far. The Mixture-of-Experts design means only a fraction of those parameters would activate per token, keeping inference cost workable. xAI also describes Grok 5 as built for real-time video alongside text, images and audio — a step beyond the static-media multimodality of most current models.
Trained on Colossus 2
Grok 5 was trained on Colossus 2, xAI's AI supercluster in Memphis, Tennessee — described as the world's first gigawatt-scale AI training cluster. The scale of the training infrastructure is xAI's central pitch for Grok 5: more compute than any previous xAI run, aimed at a decisive capability jump over the Grok 4 series.
Expected pricing
xAI has not announced Grok 5 pricing. What the trend suggests: xAI has been aggressive on price. Grok 4.1 Fast, at $0.20 per million input tokens, is currently among the cheapest frontier-class models available. On the consumer side, SuperGrok runs $30/month for the standard tier and $300/month for the 16-agent "Heavy" system. Competitive pricing is expected to carry over to Grok 5, though final numbers will only be clear at launch.
The current Grok lineup
While Grok 5 is pending, SpaceXAI's shipping models are worth knowing:
- Grok 4.5 — the current flagship, released 9 July 2026. "Opus-class" positioning at $2/$6 per 1M tokens, 500K context, notable token efficiency.
- Grok 4.20 Beta 2 — the previous flagship. Competitive with, but not clearly ahead of, GPT-5.4 and Claude Opus 4.7 across major benchmarks.
- Grok 4.1 Fast — the budget option at $0.20 per 1M input tokens, one of the cheapest frontier-class models on the market.
How Grok 5 may compare
Until Grok 5 ships with published benchmarks, any head-to-head is speculative. The released flagships to measure it against are below:
- Grok 4.5 — the shipping SpaceXAI flagship →
- GPT-5.5 ("Spud") overview →
- Gemini 3.1 Ultra overview →
- Claude Opus 4.8 overview →
Frequently asked questions
When is Grok 5 coming out?
Unknown. The Q1 2026 target passed, expectations moved to Q2, and that window closed at the end of June with no launch — Grok 4.5 shipped on 9 July 2026 instead. SpaceXAI has published no official Grok 5 release date.
How many parameters does Grok 5 have?
Grok 5 is reported to have 6 trillion parameters, using a Mixture-of-Experts architecture. If accurate, that would make it the largest publicly announced AI model to date.
What hardware was Grok 5 trained on?
Grok 5 was trained on Colossus 2, xAI's gigawatt-scale AI supercluster in Memphis, Tennessee — described as the world's first gigawatt-scale AI training cluster.
Will Grok 5 be multimodal?
Yes. Grok 5 is reported to be natively multimodal, designed from the ground up to handle text, images, audio and real-time video in a single architecture.
How much will Grok 5 cost?
xAI has not announced Grok 5 pricing. xAI has been aggressive on price — Grok 4.1 Fast costs $0.20 per million input tokens — and SuperGrok consumer plans run $30/month standard and $300/month for the 16-agent Heavy tier. Competitive pricing is expected to continue with Grok 5.
What is the latest Grok model available now?
Grok 4.5, released 9 July 2026 — SpaceXAI's "Opus-class" workhorse at $2/$6 per 1M tokens with a 500K context window. It replaced Grok 4.20 Beta 2 as the shipping flagship.