Compare · AI image generators

ChatGPT vs Grok

ChatGPT: OpenAI's AI assistant, which creates and edits images inside a conversation with ChatGPT Images. Grok: xAI's AI assistant, with Grok Imagine for creating and editing images and making videos with sound.

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Updated October 16, 2026

ChatGPT and Grok details as published on chatgpt.com and grok.com (and their official app store listings), checked October 16, 2026. Luren AI shown for reference.
	ChatGPT	Grok	Luren AI
Platforms	Web, iOS, Android	Web, iOS, Android	iPhone and Android app
Mobile app	Yes	Yes	Yes, iPhone and Android
Free plan	Yes: the Free plan includes limited image creation	Free to download and use; SuperGrok subscriptions add higher usage on Grok Imagine.	Free to download and try
Pricing	Free, then Go $8, Plus $20 and Pro from $100 a month, with more image creation on each tier (as listed on its pricing page)	Free, with SuperGrok subscriptions (Lite, SuperGrok, Plus and Heavy on its App Store listing) and extra usage credits sold in the app.	Pay per creation with coins, or a weekly or yearly Pro subscription
What you need to start	Nothing: describe an image, or upload a photo and describe the change	None: start from text or your voice, or upload a photo to edit or animate.	One photo, or just a prompt; no training
AI models	OpenAI's own image generator, ChatGPT Images 2.5; no third-party models	xAI's own Grok models, with Grok Imagine for images and video.	Nano Banana Pro, Nano Banana 2.1, GPT Image 2.5, Seedream, Qwen-Image 3.0, Grok Imagine; Veo 3.1, Kling, Seedance
Images	Text-to-image in a chat, in any aspect ratio, with text and transparent backgrounds on request, templates, and images with thinking on Plus and Pro	Images from text, or from your voice	300+ styles, your own prompt with a model picker, and an AI agent
Video	Not offered	Short videos with sound from text or from your photos; Imagine Agent Mode stitches clips into longer videos	Image to video, text to video, UGC videos and 40+ AI dances
Editing	Upload a photo and describe the changes, or highlight an area with the selection tool; resize and remove on mobile	Remove objects, change backgrounds or apply artistic styles to existing images	Restore, upscale, change clothes, backgrounds, pose and expression

Choose ChatGPT if…

Quick images inside a conversation
Refining an image by describing changes
Posters, logos and graphics with text

ChatGPT is OpenAI's AI assistant, and ChatGPT Images, now at version 2.5, creates new pictures or edits a photo you upload right inside a conversation. You can select an area to change, choose any aspect ratio, start from templates for posters or logos, or sketch an idea on mobile, on the web, iOS and Android.

Strengths

Images and edits happen in the same chat as writing and research
Follows instructions to add text, details or a transparent background
Selective edits: highlight an area and describe the change
Available on the web, iOS and Android, with image creation on the free tier

Limits to know

Image creation on the Free plan is limited
Generating an image can take a few minutes, depending on complexity
Only OpenAI's own image model, with no choice of other providers
Video generation is not listed among its plan features
Its help center notes that selection highlights are not always precise

ChatGPT alternatives →

Choose Grok if…

Fast images and short clips with sound from a prompt
Animating your own photos
People who want research and creative tools in one assistant

Grok is the AI assistant from xAI, on the web at grok.com and in apps for iPhone, iPad and Android. Its Grok Imagine feature generates images from text or your voice, edits existing images, creates short videos with sound and animates your photos, and Imagine Agent Mode helps you plan, generate and stitch clips into longer videos. Grok also offers chat, research and real-time answers from X and the web.

Strengths

Images and videos with sound in the same app as a full AI assistant
Turns your own photos into short videos
Edits images by description: remove objects, change backgrounds, apply styles
Real-time answers from X and the web alongside the creative tools

Limits to know

Higher Grok Imagine usage requires a SuperGrok subscription
Rated 16+ on the App Store and Teen on Google Play
Its store listings do not describe a choice of third-party image or video models

Grok alternatives →

Key differences

Grok makes video (Short videos with sound from text or from your photos; Imagine Agent Mode stitches clips into longer videos); ChatGPT does not list video features.
ChatGPT is listed among ai image generators; Grok among ai image generators and ai video generators.
Free plans: ChatGPT: Yes: the Free plan includes limited image creation. Grok: Free to download and use; SuperGrok subscriptions add higher usage on Grok Imagine.

A third option

Both kinds of model, in one phone app

Luren AI puts Nano Banana Pro, GPT Image 2.5, Seedream, Veo 3.1 and Kling side by side on iPhone and Android, with 300+ ready-made styles, UGC ads, AI dances and an AI agent that makes the picture for you. Start from one photo, no training.

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FAQ

ChatGPT vs Grok: questions

Is ChatGPT better than Grok?

It depends on the job. ChatGPT suits quick images inside a conversation; refining an image by describing changes; posters, logos and graphics with text. Grok suits fast images and short clips with sound from a prompt; animating your own photos; people who want research and creative tools in one assistant.

Is ChatGPT free?

Yes: the Free plan includes limited image creation.

Is Grok free?

Free to download and use; SuperGrok subscriptions add higher usage on Grok Imagine.

Which is better for video, ChatGPT or Grok?

ChatGPT: no video features listed. Grok: Short videos with sound from text or from your photos; Imagine Agent Mode stitches clips into longer videos.

Is ChatGPT image generation free?

Yes, with limits. OpenAI's pricing page lists limited image creation on the Free plan, more on Go and Plus, and unlimited, faster image creation on Pro, and its help center says ChatGPT Images is available on all tiers.

Is Grok Imagine free?

Grok is free to download and use, and its apps sell SuperGrok subscriptions and extra usage credits. Grok's plans page lists higher usage on Grok Imagine as a SuperGrok benefit.

Is there an alternative to ChatGPT and Grok on my phone?

Luren AI is an iPhone and Android app with image models like Nano Banana Pro, GPT Image 2.5 and Seedream, video models like Veo 3.1 and Kling, 300+ ready-made styles and an AI agent. It is free to download and try.

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Sources

ChatGPT and Grok are trademarks of their owners. Luren AI is not affiliated with either. Details are as each company publishes them on its own site and store listings on the date above; plans and prices change, so check their sites before you buy.