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Grok 4.3 Beta

Grok 4.3 Beta was an interim xAI model release from April 2026, roughly twice the parameter count of the preceding version and trained for longer, made available first to top-tier SuperGrok subscribers. xAI has continued releasing further updates since then, with Grok 4.7 the current flagship model as of September 2026.

By xAIPay as you goSince 2026AI Models

Facts checked on against the sources listed at the end of this page.

Visit x.ai

Newer version available. xAI has released further updates since Grok 4.3 Beta's April 2026 launch, with Grok 4.7 the current flagship model as of September 2026.

Pricing
Pay as you goPaid from Superseded by current Grok API pricing
Open source
NoProprietary

A good fit for

  • Researching the history and pace of xAI's Grok model release cadence
  • Understanding capability context for xAI's current flagship model, Grok 4.7

Not a good fit for

  • New projects, since xAI has released further updates since Grok 4.3 Beta
  • Anyone wanting xAI's latest available flagship model

Grok 4.3 Beta pricing

Grok 4.3 Beta was made available first to top-tier SuperGrok subscribers, with broader API access following. xAI's current flagship model is Grok 4.7; check xAI's current documentation for active model pricing.

Prices in USD, checked on 27 September 2026. Current prices on docs.x.ai.

Main features

Larger parameter count
Roughly twice the size of the preceding Grok version, per xAI's own description at launch.
Early access rollout
Made available first to top-tier SuperGrok subscribers as a beta.
API access
Usable independently of X through xAI's developer API.

About Grok 4.3 Beta

Grok 4.3 Beta rolled out in April 2026 as an interim update in xAI's fast-moving release cadence, with roughly double the parameter count of the preceding version and a longer training run intended to deliver a meaningful jump in performance.

It was made available first as an early access beta to top-tier SuperGrok subscribers before wider rollout, consistent with xAI's pattern of iterating quickly and shipping updates to premium users first.

xAI has continued releasing further updates since Grok 4.3 Beta, with the company's current flagship model, Grok 4.7, launched later in 2026.

Made by
xAI
Free plan
Early access was limited to top-tier SuperGrok subscribers at launch
Available on
API, X (formerly Twitter), SuperGrok apps (historically)

Grok 4.3 Beta alternatives

ToolPricingGitHub stars
Anthropic ClaudeAnthropic's Claude model family, accessed through the Claude apps, the Claude API, or major clouds.Pay as you go2.1k
StarCoderOpen source code-generation model from the BigCode project, trained on 80+ programming languages.Open source7.5k
Gemma 4Google DeepMind's current generation of lightweight, open-weight language models.Open source5.8k
DeepSeek V4DeepSeek's current open-weight model family, including V4.1-Flash and V4-Pro.Open sourceNone
DevstralMistral AI's open-weight model built specifically for coding and software engineering agents.Open sourceNone
Gemini 3.1 ProGoogle's third-generation Gemini Pro model, currently in preview, for complex reasoning tasks.Pay as you goNone

Questions about Grok 4.3 Beta

Is Grok 4.3 Beta still available?

xAI has released further updates since Grok 4.3 Beta's April 2026 launch; availability of the older beta should be confirmed directly with xAI.

What is xAI's current flagship model?

As of September 2026, xAI's current flagship model is Grok 4.7.

Sources and links

Work on Grok 4.3 Beta? Claim this listing. Something wrong or out of date? Suggest a correction. Stats come from the public GitHub and npm APIs and update every day.

Grok 4.3 Beta: pricing, features and alternatives (2026) | ScratchDB