Eight apps like ChatGPT that all have a free plan: Omni AI (20+ AI models in one app), Claude (writing and long documents), Gemini (Google services), Perplexity (search with citations), Microsoft Copilot (free GPT models), DeepSeek (unlimited free chat), Mistral Le Chat (fast) and Grok (real-time data from X).
Apps like ChatGPT compared
| App | Best at | Free plan | Paid plan |
|---|---|---|---|
| Omni AI | GPT-5, Claude, Gemini, Grok and DeepSeek in one app | Daily allowance on every model; credits for image and video | About $9.99/mo or $59.99/yr |
| Claude | Long documents, careful writing | Latest Sonnet model within a daily cap; no image generation | About $20/mo (Pro) |
| Gemini | Gmail, Docs and Android integration | Flash model, image generation, Deep Research (capped) | About $20/mo (Google AI Pro) |
| Perplexity | Research with sources | Unlimited standard search, a few Pro searches a day | About $20/mo (Pro) |
| Microsoft Copilot | Free GPT models plus web search | GPT-based chat, search, image generation | About $20/mo (Copilot Pro) |
| DeepSeek | Free unlimited reasoning and code | V3 and R1 with no cap | Free (API is pay-as-you-go) |
| Mistral Le Chat | Fast answers, EU data residency | Latest model, web search, image generation (capped) | About $15/mo (Pro) |
| Grok | Real-time data from X | Free within a daily cap | About $30/mo (SuperGrok) |
Omni AI — the closest all-in-one to ChatGPT
Omni AI is a free iOS and Android assistant with GPT-5.6 Sol, Claude Sonnet 5, Gemini 3.6 Flash, Grok 4.5, DeepSeek V4 Pro, Mistral, Llama 4 and Perplexity Sonar Pro in one chat, switchable mid-conversation. It also includes image generation, video generation on Google Veo 3.1, web search with citations, and photo and PDF analysis. The free tier gives a daily allowance across every model, and Pro is about half the price of a single ChatGPT Plus subscription.
Get 20+ AI models in one free app
GPT-5, Claude, Gemini, Grok and DeepSeek on iOS and Android — free to download.
Frequently asked questions
Which app is most like ChatGPT?
It depends on the use. Claude for writing, Perplexity for search, DeepSeek for free and unlimited. If you want GPT-5, Claude and Gemini together, Omni AI is the closest all-in-one.
Which app like ChatGPT is completely free?
DeepSeek is free with no cap. Every other major app — including ChatGPT itself — limits its best models on the free plan.
Which app like ChatGPT has the cheapest paid plan?
Omni AI at about $9.99 a month ($59.99 a year), roughly half the ~$20 charged by ChatGPT Plus, Claude Pro, Gemini Advanced and Perplexity Pro.