Tool review · Generative AI

Grok 4 review

Grok 4 is a large language model from xAI. Its strengths are best for current-events and breaking-news queries; real-time data access genuinely differentiated. The main caution: reasoning benchmarks below GPT-5 and Opus. It has been superseded by a newer release, so compare it with current options before adopting it.

What it is

Legacy model, superseded by Grok 4.7. xAI's flagship model, integrated with X (Twitter) for real-time data access. Strong on current-events queries and less guardrail-restrictive than peer models. Available via X.com Premium+ subscription and API.

Key features

  • Real-time X data access (current events, trends)
  • Less restrictive content guardrails than peers
  • API access via x.ai
  • Image-gen integrated
  • Available in X.com app

Pros

  • Best for current-events and breaking-news queries
  • Real-time data access genuinely differentiated
  • Active model updates

Cons

  • Reasoning benchmarks below GPT-5 and Opus
  • Less restrictive guardrails are a feature for some and a risk for enterprise
  • X subscription required for chat UI

Pricing

Grok 4 is a paid product with plans starting at $30/mo. There is no permanent free tier, so budget for a paid plan or a trial.

How to get started

Start with one real task you already do each week, give the model the full context, and compare the result with your usual output before changing your workflow. Keep sensitive client or patient data out of consumer chat apps unless your organization has approved the plan.

Alternatives to consider

  • ChatGPT (OpenAI, $20/mo): OpenAI's flagship conversational AI.
  • Claude (Anthropic, $20/mo): Anthropic's assistant, known for long-context reasoning, careful writing, and safety-aware outputs.
  • Claude Fable 5 (Anthropic, API: $10 in / $50 out per M tokens): Claude Fable 5 is a premium-tier Claude model priced above Opus, aimed at the hardest professional and technical work.
  • Claude Fable 5.1 (Anthropic, API: $10 in / $50 out per M tokens): Claude Fable 5.1 is Anthropic's premium generally available model, priced above Opus and built for the hardest reasoning, coding and analysis tasks.
  • Claude Haiku 4.5 (Anthropic, API: $1 in / $5 out per M tokens): Claude Haiku 4.5 is Anthropic's fast, low-cost model at $1 and $5 per million tokens.

Frequently asked questions

What is Grok 4?

Legacy model, superseded by Grok 4.7. xAI's flagship model, integrated with X (Twitter) for real-time data access.

How much does Grok 4 cost?

Grok 4 is a paid product with plans starting at $30/mo. There is no permanent free tier, so budget for a paid plan or a trial.

Is there a free version of Grok 4?

Grok 4 does not currently list a permanent free tier. Look for a trial or a low-cost plan to test it on real work first.

What are the alternatives to Grok 4?

Comparable generative ai options we review include ChatGPT, Claude, Claude Fable 5 and Claude Fable 5.1. Read each review to compare pricing, strengths and limits.

Independent review by the AI by Career editorial team. Last reviewed September 2026. No paid placement or affiliate influence; see our editorial policy.