Grok 4

Name: Grok 4
Author: xAI

Grok 4 was a large language model from xAI, succeeding Grok 3 with improved reasoning and agentic capabilities. xAI has continued its rapid release cadence since then, with Grok 4.7 the current flagship model as of September 2026.

By xAIPay as you goSince 2023AI Models

Facts checked on 27 September 2026 against the sources listed at the end of this page.

Visit x.ai

Newer version available. xAI has released several newer Grok updates since Grok 4, including versions like Grok 4.3 Beta and 4.20, 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Pricing: Pay as you goPaid from Superseded by current Grok API pricing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 progression of xAI's Grok model releases
Understanding capability context for xAI's current flagship model, Grok 4.7

Not a good fit for

New projects, since xAI has released several newer Grok updates since Grok 4
Anyone wanting xAI's latest available flagship model

Grok 4 pricing

Grok 4 was available via xAI's API on a pay-as-you-go basis and through X subscriptions. 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

X integration: Available directly within the X platform for chat-based interactions.
API access: Usable independently of X through xAI's developer API.
Agentic tool calling: Improved support for agentic, tool-using workflows over the prior generation.

About Grok 4

Grok 4 succeeded Grok 3 as xAI's flagship large language model, with improvements to reasoning and agentic tool-calling capability, and was integrated into the X platform as well as available through xAI's developer API.

It arrived amid xAI's fast-moving release cadence, which has continued to produce successive updates and version bumps at a pace faster than many other major AI labs.

xAI has since released several further updates beyond Grok 4, including Grok 4.3 Beta and subsequent versions, with Grok 4.7 being the company's current flagship model as of September 2026.

Made by: xAI
Free plan: Access was available to X Premium subscribers and free-tier users with usage limits, historically
Available on: API, X (formerly Twitter), Grok apps (historically)

Grok 4 alternatives

Tool	Pricing	GitHub stars
Anthropic ClaudeAnthropic's Claude model family, accessed through the Claude apps, the Claude API, or major clouds.	Pay as you go	2.1k
StarCoderOpen source code-generation model from the BigCode project, trained on 80+ programming languages.	Open source	7.5k
Gemma 4Google DeepMind's current generation of lightweight, open-weight language models.	Open source	5.8k
DeepSeek V4DeepSeek's current open-weight model family, including V4.1-Flash and V4-Pro.	Open source	None
DevstralMistral AI's open-weight model built specifically for coding and software engineering agents.	Open source	None
Gemini 3.1 ProGoogle's third-generation Gemini Pro model, currently in preview, for complex reasoning tasks.	Pay as you go	None

Questions about Grok 4

Is Grok 4 still available?

xAI has released several newer Grok updates since Grok 4; availability of the older model 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

xAI models documentation

Documentation

Work on Grok 4? 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.