AI Assistant

Grok

Live-information assistant from SpaceX's AI unit, with X-native search and multi-agent reasoning.

Grok answers with live web and X search by default, which makes it the assistant to ask about things happening right now. Since SpaceX absorbed xAI, it ships from the SpaceXAI unit: Grok 4.5 — a 1.5-trillion-parameter mixture-of-experts model released in July — tops the lineup, a transparent multi-agent mode runs parallel agents on hard questions, and Grok Imagine generates images up to 2K and 15-second video without leaving the thread.

Best for

News-followers, traders, and anyone whose questions are about the last 24 hours rather than the last decade — live X integration is the entire point. Developers get the same models through the xAI API, including inside Cursor.

Real-time grounding is the moat: ChatGPT and Gemini bolt search onto a chat product, while Grok treats live web and X data as the default context for every answer. Its auditable multi-agent mode — parallel agents whose individual reasoning you can inspect — is a genuine product idea rivals haven't copied. Perplexity matches it on citations but has no equivalent of the social firehose.

Core features

Conversational assistant

Chat, code generation, file and PDF analysis, and natural voice with sub-second latency, with memory that carries across conversations.

Real-time orientation

Live citations from web and X searches on every answer — responses reflect breaking events rather than a training-data cutoff.

Multimodal direction

Grok Imagine generates images up to 2K resolution and 15-second videos in the same thread, with follow-up-prompt editing and restyling.

Pros

+ Live web and X grounding by default — the strongest real-time answers of any major assistant
+ Auditable multi-agent mode shows each agent's reasoning instead of a single black-box answer
+ Fast model cadence: Grok 4.5, a 1.5T-parameter frontier model, shipped publicly in July with aggressive API pricing

Watchouts

- Answer quality leans on X's firehose, so hot-topic responses need more source-checking than Perplexity or ChatGPT Search
- Frontier access is expensive — full Grok 4.5 sits behind the $300/month Heavy tier

Power List links

People behind Grok

Full list

Elon Musk@elonmusk

Pricing

freemium

Free · $30/mo SuperGrok · $300/mo SuperGrok Heavy

SuperGrok is $30/month or $300/year; Heavy at $300/month is the only consumer tier with full Grok 4.5 access. The free tier works on web, iOS, and Android with tight limits, and Grok remains accessible through X. xAI publishes no standalone consumer pricing page — figures corroborated across multiple trackers. API: Grok 4.5 at $2 input / $6 output per million tokens.

Full Grok pricing breakdown →

Discovery tags

Research Writing CodingApplication LayerModel LayerAgent Layer

Company context

xAI, maker of Grok, was absorbed into SpaceX and now trades as part of Nasdaq-listed SPCX.

View xAI

TECHi verdict

Grok is the best assistant for one question shape — "what is happening right now, and what does it mean" — and a middling choice for most other work. SuperGrok at $30 is worth it if X is your information diet: the live grounding is real, the multi-agent mode is genuinely novel, and the model cadence since the SpaceX merger has been fast. Heavy at $300 is for people who need 4.5's depth professionally, not enthusiasts. For general writing, coding, and analysis, ChatGPT and Claude remain stronger daily drivers. The open question is stewardship: a rocket company's AI unit training frontier models on Cursor data is a fascinating machine, but nobody buying a consumer chatbot subscription can be sure where its priorities will sit in a year.

Related in the directory

People

The people behind xAI

Elon MuskFounder, xAI

Maker

Company

xAIxAI, maker of Grok, was absorbed into SpaceX and now trades as part of Nasdaq-listed SPCX.

Same category

Alternatives in the same category

Sources

Official product page

Alternatives

ChatGPT

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Strategic Product Influence — Editorial 94/100 · version not recorded

Score methodology

Claude

Anthropic's assistant for deep analysis, long documents, and serious coding work.

Strategic Product Influence — Editorial 93/100 · version not recorded

Score methodology

Gemini

Google's assistant woven into Gmail, Workspace, Android, and Search — and priced to bundle.

Strategic Product Influence — Editorial 90/100 · version not recorded

Score methodology

Frequently asked

What is Grok?

Live-information assistant from SpaceX's AI unit, with X-native search and multi-agent reasoning.

Who builds Grok?

Grok is built by xAI.

How much does Grok cost?

Grok uses freemium. Current tiers: Free · $30/mo SuperGrok · $300/mo SuperGrok Heavy. Check the official site before buying — AI pricing changes often.