TLDR
- Grok 5’s public beta is expected to launch sometime between May and June 2026, with full API access likely arriving in Q3.
- The model is rumored to have around 6 trillion parameters and will likely use a Mixture-of-Experts (MoE) architecture—roughly double the scale of Grok 4.
- Its reported context window is 1.5 million tokens, about 50% larger than Claude Opus 4, though still not the largest among flagship models.
- As expected, Grok 5 will be multimodal, with native support for text, images, audio, and real-time video processing.
- Elon Musk has suggested there’s roughly a 10% chance the model could reach AGI-level capabilities.
- Pricing hasn’t been announced yet, but it will likely follow a tiered structure, including SuperGrok ($30/month) and SuperGrok Heavy ($300/month). It’s also expected to be available on Overchat AI, where it will be included in the Pro subscription ($14.99/month or $49.99/year).
What Is Grok 5?
Grok 5 is xAI's next-generation AI model and the successor to Grok 4.2, the company's current flagship as of April 2026, developed by Elon Musk's company xAI.
According to Musk, Grok 5 is being developed as a major step toward AGI. In practice, however, it’s more likely to represent a significant advance in agentic system design — particularly in its ability to plan and execute multi-step tasks with greater reliability, an area where models like Claude Opus 4.6 and GPT-5.4 have already made substantial progress. This would be inline with the current trend of developing more autonomous models as LLM developers battle for market share in the enterprise space.
In terms of architecture, Grok 5 is reportedly built on a Mixture-of-Experts (MoE) framework with around 6 trillion parameters — roughly double Grok 4’s estimated 3 trillion. It’s also natively multimodal, designed from the ground up to handle text, images, audio, and real-time video, with integrated temporal reasoning in a unified architecture.
All of this is being trained on Colossus 2, xAI's gigawatt-scale AI supercluster in Memphis, Tennessee — the largest AI training facility in the world.
Grok 5 Release Date
The release date of Grok 5 is somewhat uncertain, as the timeline has shifted several times and the model has already been delayed. However, the most likely release date is sometime in Q2 2026.
Originally the model was supposed to come out in Q1 2026 — but Q1 has come and gone without a release. xAI's official X account now points to Q2 2026.
- Public beta is expected in May or June 2026
- Full API access is expected in Q3 2026.
That being said, Polymarket bettors are skeptical: at the time of writing, the prediction market gives just a 33% probability that Grok 5 ships by June 30, 2026.
So, what’s the current state of the model? The latest confirmed update is that Grok 5 is still in active training. xAI shared this in its January 28, 2026 Series E funding announcement.
Grok 5 Features
Grok 5 is supposed to have 6 trillion parameters, which would make it the largest publicly announced AI model in the world. For context, Grok 4 had roughly 3 trillion parameters — so Grok 5 doubles that. Other notable architectural details:
- Mixture-of-Experts (MoE) architecture: The model activates only a subset of its parameters for each query, improving efficiency and speed without sacrificing quality. This approach is now standard among most flagship AI models.
- Natively multimodal: Grok 5 is designed to understand text, images, audio, and video within a single system, enabling more accurate and context-aware responses.
- Omnimodal generation: Beyond understanding multiple modalities, Grok 5 is also expected to generate images—potentially with built-in visual reasoning, similar to models like Nano Banana 2.
- 1.5 million token context window: While not the largest among top-tier models, this is still substantial and should allow the model to process extremely large inputs, such as near-complete codebases, in a single prompt.
What We Know About Colossus 2: xAI's Gigawatt-Scale Supercluster
An interesting detail about Grok 5 is that it’s being trained in a highly unusual data center known as Colossus 2—the second phase of xAI’s Memphis-based supercomputing complex and the world’s first gigawatt-scale AI training cluster.
The broader Colossus complex reportedly includes around 550,000 NVIDIA GPUs distributed across multiple facilities in Memphis, including Colossus 1, Colossus 2, and a third, as-yet unnamed site. xAI is estimated to have invested roughly $18 billion in GPUs alone—not including land, construction, or ongoing operational costs. Altogether, the system is said to generate about 1.5 GW of power following its April 2026 upgrade.
According to Elon Musk, this level of compute provides xAI with a significant strategic advantage in the race toward AGI. Greater compute capacity enables more training runs, faster experimentation, and ultimately more capable models. Grok 5 is expected to be the first model to fully reflect the results of that scale.
Grok 5 Benchmarks and Performance
There are no official benchmarks for Grok 5 yet, as the model is still in training. However, a number of leaks, rumors, and expert predictions are worth paying attention to.
The most notable is an unverified leak involving a “Project Valis” Grok 5 candidate model, which reportedly scored 45.1% on a Zeitgeist reasoning exam. For context, Gemini 3 Pro is said to have scored 32.4%, which—if accurate—would suggest a significant generational leap. That said, these numbers should be treated with caution, as they could easily be cherry-picked or fabricated.
Another way to think about expected performance is through architecture and scale. Given Grok 5’s reportedly doubled parameter count and updated design compared to Grok 4.2, it should meaningfully outperform its predecessor. However, gains at this scale don’t scale linearly—doubling parameters does not translate into a proportional jump in capability.
More realistically, incremental improvements like Grok 4.5 are likely to deliver modest gains, potentially in the range of 2–10 percentage points across common benchmark suites compared to Grok 4.2.
Grok 5 vs GPT vs Claude vs Gemini
Here's how Grok 5 stacks up against the other current frontier models:
| Feature |
Grok 5 |
GPT-5.4 |
Claude Opus 4.6 |
Gemini 3.1 Pro |
| Parameters |
~6T (MoE) |
Undisclosed |
Undisclosed |
Undisclosed |
| Context Window |
1.5M tokens |
128K–256K |
Up to 1M |
1M+ |
| Multimodal |
Native text, image, audio, video |
Text, image, audio, video |
Text, image |
Text, image, audio, video |
| Real-time data |
X firehose, Browsing |
Browsing |
Browsing |
Google Search |
| Agentic |
✅ |
✅ |
✅ |
✅ |
| API Pricing |
TBD |
~$5–15/M tokens |
~$15–75/M tokens |
~$1.25–10/M tokens |
Grok 5's main differentiators look to be its real-time X data access, the largest reported parameter count of any frontier model, and omnimodal generation capabilities.
Grok 5 Pricing and API Access
xAI hasn't announced official Grok 5 pricing yet, but we can make educated guesses based on current rates.
Current xAI API pricing for reference, across the current and previous generations:
- Grok 4.2: $2.00 per million input tokens, $6.00 per million output tokens
- Grok 4: $3.00 per million input tokens, $15.00 per million output tokens
Notably, the price has decreased over time, and it is possible that, with more efficient architecture, we will see a further reduction in API costs.
On the consumer side:
- SuperGrok: $30/month or $300/year
- SuperGrok Heavy: $300/month
Once Grok 5 rolls out it will also become available on Overchat AI as part of our single unified subscription at $14.99/month or $15.99/year. If you want to try current Grok models today without committing to a subscription, you can access Grok 4.2, and 50+ other AI models through Overchat AI in a single interface.
How to Access Grok 5 When It Launches
Once Grok 5 launches, here are your options for accessing it:
- Try it free on X — limited access is expected.
- Buy SuperGrok or SuperGrok Heavy.
- Sign up at x.ai for a developer account; the API is OpenAI SDK-compatible.
- Create a free Overchat AI account and access Grok alongside GPT, Claude, Gemini. and 50+ other models in one interface.
Frequently Asked Questions (FAQ)
What is Grok 5?
Grok 5 is xAI's next-generation AI model and the successor to Grok 4.2. Built by Elon Musk's xAI, it reportedly features 6 trillion parameters using a Mixture-of-Experts architecture, native multimodal support for text, images, audio, and video, and a 1.5 million token context window. Musk has positioned it as a step toward AGI rather than just another LLM.
When is the Grok 5 release date?
The current expectation is a public beta in May or June 2026, with full API access following in Q3 2026.
How many parameters does Grok 5 have?
Grok 5 reportedly has 6 trillion parameters using a Mixture-of-Experts architecture, with only a subset of those parameters activating for any given query.
What is Grok 5's context window?
The reported context window for Grok 5 is 1.5 million tokens, up significantly from Grok 4's 128K standard window.
Is Grok 5 free?
Limited free access is expected through X once Grok 5 launches. Full access will require a SuperGrok subscription ($30/month) or SuperGrok Heavy ($300/month) for priority access.
Will Grok 5 achieve AGI?
Elon Musk has stated there's roughly a 10% chance Grok 5 reaches AGI-level capabilities. Most independent AI researchers consider this estimate optimistic.
Bottom Line
Grok 5 is shaping up to be one of the most ambitious AI models ever attempted — 6 trillion parameters, a 1.5 million token context window, native multimodality, and Elon Musk's repeated claims that it represents a real step toward AGI.
Key takeaways:
- Grok 5 is expected in beta around May–June 2026, with full API access in Q3
- The 6T parameter count would make it the largest publicly announced model in the world
- Native multimodality and real-time X data access are its biggest differentiators
- It's training on Colossus 2, the world's first gigawatt-scale AI supercluster
- Pricing isn't confirmed yet, but expect SuperGrok ($30/mo) and SuperGrok Heavy ($300/mo) tiers
If you don't want to wait to chat with Grok, you can access Grok 4.2 in the Overchat AI web app — alongside the latest releases from GPT, Claude, Gemini, and dozens more in a single interface, without juggling separate subscriptions.
