DeepSeek
Free · API paid per token
Anyone who wants a capable assistant without a subscription, and is comfortable with where their data is processed.
ChatGPT
Free · Plus from $20/mo
Anyone who wants one capable AI assistant for writing, learning and everyday questions.
At a glance
The facts that usually decide it. The full breakdown, with the caveats, is below.
| DeepSeek | ChatGPT | |
|---|---|---|
| Our rating | 4/5 | 5/5 |
| Pricing | Free · API paid per token | Free · Plus from $20/mo |
| Price model | Free | Freemium |
| Category | Chatbots | Chatbots |
| Best for | Anyone who wants a capable assistant without a subscription, and is comfortable with where their data is processed. | Anyone who wants one capable AI assistant for writing, learning and everyday questions. |
Prices checked 29 July 2026. Vendors change limits often — confirm on the vendor's own pricing page before you buy.
This comparison is unusual because the free option is not a trial. DeepSeek has no consumer paid tier at all — no Plus plan, no upload paywall, no quiet downgrade to a smaller model once you have used it a lot. What you get free is the entire product, which is not true of ChatGPT’s free tier and is the thing that makes the question worth asking.
On the answers themselves, the gap is smaller than $20 a month implies, particularly on reasoning and code. What the money actually buys is everything around the model: image generation, voice, data analysis, custom GPTs, connectors and — not trivially — the assurance that it will respond when you need it. DeepSeek’s price is paid in throttling, and there is no tier that removes it.
But the factor that decides this for most professionals is neither quality nor cost. DeepSeek processes data under Chinese jurisdiction, and for client work, regulated material or anything under an NDA that is commonly a decision your employer has already made. Settle that question first; if it rules DeepSeek out, nothing else in this comparison matters.
What actually decides it
- Jurisdiction decides it before quality does
- DeepSeek processes data under Chinese jurisdiction. For personal use that is a personal decision. For client work, patient data, regulated industries or anything under an NDA, many organisations now name it specifically in policy — and where that applies, this comparison is already over regardless of how good the model is.
- The gap is in the ecosystem, not the answers
- On reasoning and code DeepSeek is closer than the price difference implies. What $20 buys is everything around the model: image generation, voice, data analysis, custom GPTs, integrations and the reliability of not being throttled. If you only want text answers, you are paying mostly for things you will not use.
- Throttling is the trade, and you cannot buy past it
- DeepSeek is free because usage is throttled at peak times — 'Server Busy' is a normal part of using it. There is no paid tier to escape to, which is unusual and important: if guaranteed availability matters to your work, no amount of money fixes this.
- Free here means free, not a trial
- Most free tiers in this category exist to demonstrate a limit and sell you the paid plan. DeepSeek has no consumer paid tier at all, so the free product is the whole product — no message caps to hit, no upload paywall, no downgrade to a smaller model after a burst.
Which one to pick
Choose DeepSeek if…
- Cost is a real constraint and your work is not confidential
- You mainly want reasoning, explanation and code rather than images or voice
- You can tolerate peak-hour throttling and work around it
- You want a second assistant alongside a paid one, to absorb overflow
Choose ChatGPT if…
- Your work involves client, patient, regulated or NDA-covered material
- You want one subscription covering images, voice, data analysis and integrations
- You need it to be available when you need it, without throttling
- You rely on the wider ecosystem — custom GPTs, connectors, third-party integrations
DeepSeek vs ChatGPT FAQ
- Is DeepSeek really free?
- Yes, and more completely than almost anything else we review. There is no Plus tier, no Pro tier and no paywall on uploads or long conversations. The only paid product is the developer API. The cost is throttling at busy times, which you cannot pay to remove.
- Is DeepSeek as good as ChatGPT?
- On reasoning and code it is much closer than the price gap suggests. On breadth — images, voice, data analysis, integrations, availability — ChatGPT is far ahead. If you use an assistant purely for thinking and writing, the gap is small; if you use the wider product, it is large.
- Can I use DeepSeek for work?
- For public information and general drafting, usually yes. For anything confidential, check your organisation's policy first — data is processed under Chinese jurisdiction and many employers now name this tool explicitly. Assume it is prohibited for client work until you have confirmed otherwise.
- Should I cancel ChatGPT Plus?
- Try running a fortnight of your real work through DeepSeek first. If you never reach for the images, voice or integrations, you may not need the subscription. Most people who try this discover they use one or two paid features constantly — and then they know what they are paying for.
- Can I use both?
- That is the most sensible answer for a lot of people: keep one paid assistant for confidential and ecosystem work, use DeepSeek for the overflow that is neither. It is effectively a way to double your capacity without doubling the bill.