ChatGPT vs DeepSeek

ChatGPT and DeepSeek are both AI Chat & Assistants tools (Chatbots). Below: what each costs, what it does well, its biggest catches, and who should pick which, all from public sources rather than our own testing.

Side by side

ChatGPTDeepSeek
CategoryAI Chat & Q&A · ChatbotsAI Chatbots · General Chatbots
PricingFree tier: yes. Go $8/mo (US, may include ads), Plus $20/mo, Pro from $100/mo. (checked Oct 10, 2026)Free tier: yes (app). API pay-per-token; see official pricing table. (checked Oct 10, 2026)
Pros
  • The free tier is real: unlimited everyday text chats, with uploads, images, voice and deep research included in limited amounts
  • Go at $8/mo gets you more messages, uploads and memory for well under half the price of Plus
  • Plus bundles reasoning models, projects, scheduled tasks, custom GPTs and Codex in one subscription
  • The hosted chat app is free
  • The API is very low-cost per token
  • Open-weight models you can run locally
Catches
  • Free and Go may show ads. Plus ($20/mo) is the cheapest ad-free plan
  • No annual billing on Go, Plus or Pro, so no discount for committing
  • Most limits say 'limited' or 'expanded' rather than giving a number, so it's hard to know when you'll hit the wall
  • Its privacy policy says data is processed and stored in China
  • Security researchers reported unencrypted app traffic and a past exposed database
  • 'Server busy' errors at peak times (per reviews)
Best forPeople who want one assistant for writing, research, images and light coding.Cheap reasoning and coding help on non-sensitive work, or local use.
Skip it ifYou need predictable, published usage caps, or ads are a dealbreaker on a budget.You handle client, medical, legal or financial data.

Which should you pick?

Pick ChatGPT if…

you fit this: people who want one assistant for writing, research, images and light coding.

But not if: you need predictable, published usage caps, or ads are a dealbreaker on a budget.

Watch out for: Free and Go may show ads. Plus ($20/mo) is the cheapest ad-free plan.

Pick DeepSeek if…

you fit this: cheap reasoning and coding help on non-sensitive work, or local use.

But not if: you handle client, medical, legal or financial data.

Watch out for: Its privacy policy says data is processed and stored in China.

More options

Sources

ChatGPT

DeepSeek

Pros, catches and prices are compiled from public sources (official pricing and docs pages, published reviews, user reports), not hands-on testing. Prices change often, so check the vendor page before you buy.