xAI’s official materials reviewed here verify Grok 4 and Grok 4 Fast, but not a public Grok 4.3 spec sheet; the April 17, 2026 beta date and 1T parameter claim come from third party or user generated sources.[6][11][1... What is documented: Grok 4, Grok 4 Fast, Grok Business workspaces, Google Drive integration, X a...

Create a landscape editorial hero image for this Studio Global article: Grok 4.3 Beta Specs: What’s Verified and What Isn’t. Article summary: The evidence reviewed verifies Grok 4 and Grok 4 Fast in xAI’s own docs, but not a public Grok 4.3 spec sheet; the April 17, 2026 beta date and 1T parameter claim come from third party or user generated sources, so th.... Topic tags: ai, xai, grok, llm, ai models. Reference image context from search candidates: Reference image 1: visual subject "# Grok 4.3 Beta: xAI's 500B Parameter Surprise, Grok Computer, and What Elon Musk Just Confirmed. Grok 4.3 dropped on April 17 with zero announcement. It is locked behind a $300/mo" source context "Grok 4.3 Beta: xAI's 500B Parameter Surprise, Grok Computer, and What Elon Musk Just Confirmed" Reference image 2: visual subject "# xAI Launches Grok 4.3 Beta: What the Next-Gen AI Model Means for CRE Investors.
Rumors about Grok 4.3 Beta are easy to misread because real xAI product documentation is circulating alongside unofficial claims. A review of the provided xAI materials shows documented pages for Grok 4, Grok 4 Fast, Grok Business, Google Drive integration, X account linking, and multiple API releases—but not a public Grok 4.3 model page or spec sheet.[1][
13][
14][
15][
17][
19]
That distinction matters. Several third-party and social sources describe Grok 4.3 Beta, including claims about an April 17, 2026 beta launch and a 1T-parameter model.[6] In the official xAI sources reviewed here, those Grok 4.3-specific specs are not corroborated.
Studio Global AI
Use this topic as a starting point for a fresh source-backed answer, then compare citations before you share it.
xAI’s official materials reviewed here verify Grok 4 and Grok 4 Fast, but not a public Grok 4.3 spec sheet; the April 17, 2026 beta date and 1T parameter claim come from third party or user generated sources.[6][11][1...
xAI’s official materials reviewed here verify Grok 4 and Grok 4 Fast, but not a public Grok 4.3 spec sheet; the April 17, 2026 beta date and 1T parameter claim come from third party or user generated sources.[6][11][1... What is documented: Grok 4, Grok 4 Fast, Grok Business workspaces, Google Drive integration, X account linking, and API release note items such as Speech to Text, Text to Speech, Files, Responses, Batch, and Voice Age...
For product planning or benchmarking, treat Grok 4.3 parameter counts, training duration claims, and beta access details as unverified until they appear in xAI’s own docs or release notes.[1][11][14][19]
Continue with "Mogami vs Type 31: Why Japan Wants New Zealand’s Frigate Deal" for another angle and extra citations.
Open related pageCross-check this answer against "Corpay’s BVNK Deal Brings Stablecoin Wallets and 24/7 Settlement to 800,000 Businesses".
Open related pageThe xAI Speech to Text API is now generally available. The Text-to-Speech API is now generally available. Batch API supports Image and Video generation. The Batch API now supports image generation, image editing, and video generation in addition to chat com...
xAI Launches Grok 4.3 Beta: What the Next-Gen AI Model Means for CRE Investors. Grok 4.3 is xAI's newest AI model, launched in beta on April 17, 2026, as a significant upgrade to the Grok 4 series with enhanced long-context processing, multimodal video unde...
The News: Elon Musk confirmed Grok 4.3 is live as an early beta, with near-daily improvements and formal release notes promised as development progresses. Why It Matters: xAI's rapid iteration pace means the AI assistant embedded across Tesla's ecosystem —...
xAI Drops Grok 4.3 Beta With Video, Slides & Speech APIs. Grok 4.3 Arrives Quietly, Adds Video, Slides, and New APIs. Try Grok 4.1 Fast on Chatly while you wait for Grok 4.3 to arrive. xAI released Grok 4.3 Beta on April 17, 2026, with no press release or a...
The safest conclusion is conservative: Grok 4-era products are clearly documented, but Grok 4.3 Beta specs are not officially verified in this source set.[1][
13][
14][
15][
17][
19]
grok-4-fast, Grok Business workspaces, a Google Drive connector, X account linking, and several API releases.[The strongest evidence comes from xAI’s own documentation and release notes. In those materials, the documented product surface is broader than a single model announcement, but it does not include an official Grok 4.3 spec page in the sources reviewed here.[1][
13][
14][
15][
17][
19]
| Documented item | What the xAI source supports | Status |
|---|---|---|
| Grok 4 | xAI’s model page describes Grok 4 as its flagship model for natural language, math, and reasoning, with capabilities including tool use, structured outputs, and reasoning.[ | Officially documented |
| Grok 4 Fast | xAI’s developer docs describe grok-4-fast as a cost-efficient reasoning model and list model capabilities and pricing-related details.[ | Officially documented |
| Grok Business / Enterprise | xAI documents dedicated personal and team workspaces with enhanced privacy and sharing controls.[ | Officially documented |
| Google Drive integration | xAI’s Grok Business docs describe a connector that lets Grok search and reference Google Drive files while respecting Google Drive permissions.[ | Officially documented |
| X account linking | xAI’s FAQ explains how users can connect an X account to an xAI account from Grok Website settings.[ | Officially documented |
| API release-note items | xAI release notes list items including Speech-to-Text and Text-to-Speech API general availability, Batch API support for image and video generation, Grok Voice Agent API, Files API, Responses API, and Grok 4.1 Fast in the Enterprise API.[ | Officially documented |
These sources are enough to confirm that xAI has documented Grok 4, Grok 4 Fast, business features, integrations, account-linking features, and developer API updates.[1][
13][
14][
15][
17][
19] They are not enough to confirm a separate official Grok 4.3 specification.[
1][
14][
19]
The Grok 4.3 discussion appears to be driven mainly by non-official sources. A third-party AI consulting article says Grok 4.3 Beta launched on April 17, 2026, and describes enhanced long-context processing, multimodal video understanding, and improved reasoning capabilities.[6] A Basenor article says Elon Musk confirmed Grok 4.3 as an early beta with near-daily improvements and future release notes, but that claim is not mirrored in the official xAI release notes or model pages reviewed here.[
7][
1][
14][
19]
Other sources make similar claims with varying detail. A Chatly post says Grok 4.3 Beta appeared quietly in Grok’s model selector and mobile apps while also saying there was no press release or announcement post.[10] An Instagram snippet repeats the April 17, 2026 beta-launch claim.[
12] A user-generated X post claims Grok 4.3 has 1T parameters, is twice as big as “Grok 4.20,” and was trained longer.[
11]
Those sources help explain why people are talking about Grok 4.3, but they do not carry the same evidentiary weight as xAI’s official model documentation or release notes for confirming model names, availability, or technical specs.[1][
6][
7][
10][
11][
12][
14][
19]
| Circulating claim | Best evidence in the provided sources | Verdict |
|---|---|---|
| Grok 4.3 Beta is live | Several third-party or social sources say this, while the official xAI sources reviewed here document Grok 4 and Grok 4 Fast rather than a Grok 4.3 model page.[ | Not officially verified here |
| Grok 4.3 launched on April 17, 2026 | Third-party and social snippets give that date; the xAI release-notes source reviewed here does not list a Grok 4.3 launch.[ | Not officially verified here |
| Grok 4.3 has 1T parameters | The 1T-parameter claim appears in a user-generated X snippet; the provided official Grok 4 and Grok 4 Fast docs do not corroborate that number.[ | Unverified |
| Grok 4.3 is twice as big as “Grok 4.20” and was trained longer | That comparison appears in the same X snippet; no provided official xAI source confirms a Grok 4.20 baseline or the training-duration claim.[ | Unverified |
| Grok 4 is officially documented | xAI’s Grok 4 model page describes the model and its capabilities.[ | Verified |
| Grok 4 Fast is officially documented | xAI’s developer docs describe grok-4-fast as a cost-efficient reasoning model.[ | Verified |
| Grok Business and Google Drive integration are documented | xAI docs describe Grok Business workspaces and a Google Drive connector for Grok Business.[ | Verified |
The confusion comes from mixing three different kinds of evidence: official xAI documentation, third-party summaries, and user-generated posts. Official xAI docs are the strongest sources in this set for what xAI has actually documented across model pages, business features, account features, integrations, and release notes.[1][
13][
14][
15][
17][
19]
Third-party articles and social snippets can be useful signals that a beta or staged rollout may be circulating, but they are weaker evidence for exact technical claims such as parameter count, training duration, access tier, or whether “Grok 4.3” is a public model name rather than an internal or informal label.[6][
7][
10][
11][
12]
For builders and buyers, that difference is practical. A documented model page for Grok 4 or Grok 4 Fast is actionable evidence for evaluation and integration work.[14][
19] A user-generated claim that Grok 4.3 has 1T parameters is not enough, by itself, to support architecture, procurement, or benchmark assumptions.[
11][
14][
19]
If you are evaluating xAI for product, developer, or enterprise use, plan around the documented surface first: Grok 4, Grok 4 Fast, Grok Business, Google Drive integration, X account linking, and the API items listed in xAI’s release notes.[1][
13][
14][
15][
17][
19]
Treat Grok 4.3-specific claims—especially the April 17, 2026 beta date, the 1T-parameter claim, and the “twice as big” comparison—as unverified until they appear in xAI’s own model documentation, release notes, or another official xAI source.[1][
6][
10][
11][
12][
14][
19]
Grok 4.3 Beta may be a real topic of public discussion, but the provided official evidence does not verify its claimed specs. What is verified is narrower: xAI documents Grok 4, Grok 4 Fast, Grok Business, Google Drive integration, X account linking, and several API releases.[1][
13][
14][
15][
17][
19] Until xAI publishes a Grok 4.3 model page or release note, the circulated Grok 4.3 spec sheet should be treated as unconfirmed.[
1][
11][
14][
19]
With 1T params Grok 4.3 is twice as big as Grok 4.20, and was also trained much longer. It should provide a decent jump in performance. Mark
Grok 4.3 Beta quietly launched on April 17, 2026—released as a true early beta, not a polished model.
Google Drive Integration with Grok. Overview: Connect Google Drive to Grok. Seamlessly search and reference your Google Drive files directly in Grok chats. This integration lets Grok access your team's shared files and your personal files to provide more ac...
Grok 4 xAI Docs. Grok 4. Our latest and greatest flagship model, offering unparalleled performance in natural language, math and reasoning - the perfect jack of all trades. Request increased rate limitsRead announcement. At a glance. Capabilities. Connect t...
Grok Business / Enterprise. Grok Business provides dedicated workspaces for personal and team use, with enhanced privacy and sharing controls. Switch between workspaces to access team-specific features and ensure your conversations are protected under busin...
How can I link my X account sign-in/subscription to my xAI account? On Grok Website, go to Settings - Account. Click on Connect your X Account button. This will take you to X's SSO page to add X account as a sign-in method for xAI. Grok Website settings to...
Grok 4 Fast xAI Docs. Grok 4 Fast. We're excited to release grok-4-fast, our latest advancement in cost-efficient reasoning models. Request increased rate limitsRead announcement. At a glance. Capabilities. Connect the xAI model to external tools and system...