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The Bottom Line#
ChatGPT is the better choice for most people. It has a far broader product, with projects, scheduled tasks, custom GPTs, deep research, Codex, and ChatGPT Work, and it does not send your data to a company based in China.
DeepSeek is the better choice for cost-sensitive API work on non-sensitive data. DeepSeek V4 Pro costs a fraction of OpenAI's GPT-6.1 Sol per token, with a 1M token context window.
If you handle personal data or client confidential material, the deciding factor is not price. DeepSeek's privacy policy says it directly collects, processes, and stores personal data in the People's Republic of China.
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Verdict Table#
| Category | DeepSeek | ChatGPT | Winner |
|---|---|---|---|
| API price, top model | $1.32 input, $3.96 output at peak | $2 input, $10 output (GPT-6.1 Sol) | DeepSeek |
| API price, small model | $0.30 input, $1.20 output at peak | $0.10 input, $0.50 output (GPT-6 Luna) | ChatGPT |
| API context | 1M tokens | Varies by model | DeepSeek |
| App features | Chat, DeepThink, Search | Projects, tasks, GPTs, deep research, Work, Codex | ChatGPT |
| Data location | Stored in China | US company, see OpenAI's terms | ChatGPT |
| Multimodal input | Vision on Flash only | Images, voice, file uploads | ChatGPT |
| Overall | Best low-cost API option | Best product for nearly everyone | ChatGPT |
How We Built This Comparison#
We read DeepSeek's and OpenAI's official documentation and DeepSeek's privacy policy on November 9, 2026. We did not run our own tests and do not reproduce DeepSeek's self-reported benchmark results, since they are published by the vendor and not independently verified here.
OpenAI's consumer pricing page shows amounts by region and does not expose them in a form we could verify, so we link to chatgpt.com/pricing for subscription prices. API prices are published in USD on both sides.
Is DeepSeek Better Than ChatGPT?#
No, for most users. ChatGPT offers a much wider set of tools and fewer data concerns. DeepSeek is better in one specific case: developers who want a lower API bill and can send data to a provider that stores it in China.
Who Should Choose Which?#
Choose ChatGPT if you want an assistant for daily work, need features beyond chat, or handle anything confidential.
Choose DeepSeek if you run high-volume API workloads on public or non-sensitive data and cost is the main constraint.
Avoid DeepSeek's hosted service if you process personal data of customers or employees in the EU without a legal review first. A data transfer to China is a compliance question, and it should be answered before the first API call, not after.
Feature-by-Feature#
Models#
DeepSeek currently offers DeepSeek-V4.1-Flash-1017 and DeepSeek-V4-Pro-0813 through its API. The Flash update in October also moved DeepSeek's web and app models to the new version. Both support thinking and non-thinking modes, tool calls, and JSON output, with a 1M context window and up to 384K of output. Vision is supported on Flash but not on Pro.
ChatGPT uses the GPT-6 family. All plans include GPT-6, and Plus adds GPT-6.1 Sol and GPT-6 Astra.
Winner: depends on the job. DeepSeek's specs on paper are strong, and we have no independent test to rank the models against each other.
API Cost#
Prices per 1M tokens. DeepSeek charges half price off-peak, and peak hours are 01:00 to 04:00 and 06:00 to 10:00 UTC on weekdays.
| Model | Input, cache miss | Output |
|---|---|---|
| DeepSeek V4.1 Flash, off-peak | $0.15 | $0.60 |
| DeepSeek V4.1 Flash, peak | $0.30 | $1.20 |
| DeepSeek V4 Pro, off-peak | $0.66 | $1.98 |
| DeepSeek V4 Pro, peak | $1.32 | $3.96 |
| GPT-6 Luna | $0.10 | $0.50 |
| GPT-6.1 Terra | $1.00 | $5.00 |
| GPT-6.1 Sol | $2.00 | $10.00 |
| GPT-6 Astra | $10.00 | $50.00 |
The common claim that DeepSeek is always cheaper is not accurate. At the small end, OpenAI's GPT-6 Luna costs less than DeepSeek Flash at either time of day. The savings show up at the higher end, where DeepSeek V4 Pro costs 33% to 66% of Sol's input price and 20% to 40% of its output price.
Winner: DeepSeek at the top tier. OpenAI at the bottom tier.
Data Protection#
DeepSeek's privacy policy names Hangzhou DeepSeek Artificial Intelligence Co., Ltd. as the data controller and states that it directly collects, processes, and stores personal data in the People's Republic of China. The policy lists model training as a purpose and describes a right to opt out of that use.
Developers building on DeepSeek's API also need to consider that downstream data handling is their own responsibility under the policy.
ChatGPT is operated by OpenAI. If this topic is relevant to your use, read OpenAI's current privacy terms and business terms, because the rules differ between consumer and business plans.
Winner: ChatGPT for anyone with EU data protection obligations. Running an open model on your own hardware is the way to avoid the transfer question entirely. See our local LLM guide and the overview of open-source AI.
Product Breadth#
DeepSeek offers web chat, a mobile app, an API, and a developer preview of DeepSeek Harness for agents. Its API now also has separate Search and Fetch endpoints, billed at $0.75 per 1,000 successful requests.
ChatGPT has projects, scheduled tasks, custom GPTs, deep research, image creation, voice chats, Codex, and ChatGPT Work.
Winner: ChatGPT.
Pricing Comparison#
DeepSeek's API starts at $0.15 per 1M input tokens off-peak, and ChatGPT's consumer plans are listed by region on OpenAI's pricing page. DeepSeek's pricing page only lists API rates. Check DeepSeek's Models and Pricing page for current details.
| What you buy | DeepSeek | ChatGPT |
|---|---|---|
| Consumer app | Web chat and app, no paid plan listed in the pricing docs | Free, Go, Plus, Pro, see OpenAI's pricing page |
| API | Pay per token, half price off-peak | Pay per token |
| Web search API | $0.75 per 1,000 requests | $10 per 1,000 calls, plus search content tokens |
More Comparisons and Guides#
Read our full ChatGPT guide. We do not have a dedicated DeepSeek guide yet. For other options, see ChatGPT alternatives, the AI chatbots category, Grok vs ChatGPT, and ChatGPT vs Claude.
FAQ#
Is DeepSeek safe to use?#
It depends on the data. DeepSeek's privacy policy says it stores personal data in China, so do not enter personal, client, or confidential information unless you have checked that this is acceptable for your situation.
Is DeepSeek cheaper than ChatGPT?#
For the API, it depends on the model. DeepSeek V4 Pro is well below GPT-6.1 Sol, but OpenAI's GPT-6 Luna costs less than DeepSeek Flash. For consumer subscriptions, DeepSeek's pricing docs list no paid plan at all.
Does DeepSeek have a bigger context window?#
DeepSeek's API models have a 1M token context window. ChatGPT publishes app limits by plan, up to 128K for GPT Instant and 400K for GPT Reasoning on Pro.
When are DeepSeek's off-peak hours?#
Off-peak rates are half of peak. Peak hours are 01:00 to 04:00 and 06:00 to 10:00 UTC, Monday through Friday, excluding Chinese public holidays. All other times are off-peak.
Can I use DeepSeek with Claude Code or Codex?#
DeepSeek's API supports OpenAI and Anthropic formats and lists Claude Code and Codex among its agent integrations.
