AgentPlays
ChatGPT vs Grok
ChatGPT (OpenAI) and Grok (xAI) are both general assistants with free access and paid upgrades. Grok's public plans page did not show prices without signing in.
Quick verdict by use case
- You want a clearly published free plan and prices: ChatGPT.
- You follow news and conversations on X: Grok is built into X.
- You want image and video generation in the same app: Both offer it; compare limits on each plan page.
Pricing and free tier, side by side
| ChatGPT | Grok | |
|---|---|---|
| What it does | OpenAI's general-purpose AI chat assistant for questions, writing, files, images and voice. | xAI's AI assistant, available on grok.com, in the Grok apps and in X. |
| Is it actually free? | Free tier with limits | Free tier with limits |
| Free plan limits | Free plan: unlimited everyday text chats (subject to abuse guardrails), with limited file uploads, image creation, voice chats, deep research, memory and Codex access. | Grok says it is free to try on the web and in the apps; SuperGrok and SuperGrok Heavy add higher limits. Specific free limits and prices were not shown without signing in. |
| Pricing | Free; Go $8/month; Plus $20/month; Pro from $100/month; Business and Enterprise plans priced per user. | Check pricing: SuperGrok and SuperGrok Heavy subscriptions; prices were not visible on the public plans page without signing in. |
| Best for | Everyday questions, drafting, summarizing documents and voice chats on web and phone. | Quick answers, image and video generation, and topics being discussed on X. |
| Not great for | Anything where a wrong answer is costly without checking sources yourself. | Anyone who needs a published price list before signing up. |
| Last checked | 2026-10-13 | 2026-10-13 |
Official site: chatgpt.com ↗ Official site: grok.com ↗
Strengths and weaknesses
ChatGPT
Good for: Everyday questions, drafting, summarizing documents and voice chats on web and phone.
Not great for: Anything where a wrong answer is costly without checking sources yourself.
Grok
Good for: Quick answers, image and video generation, and topics being discussed on X.
Not great for: Anyone who needs a published price list before signing up.
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Other options
Claude
Anthropic's AI assistant for writing, analysis, long documents and coding help.
Gemini
Google's AI assistant, built into the Gemini app and Google's apps.
Perplexity
An AI answer engine that searches the web and cites its sources.
Microsoft Copilot
Microsoft's AI assistant, free on the web and phone, and built into Microsoft 365 apps on paid plans.
More comparisons
Sources
- ChatGPT: chatgpt.com pricing ↗ (checked 2026-10-13)
- Grok: grok.com pricing ↗ (checked 2026-10-13)