ChatGPT vs DeepSeek: Paid Polish or Free Reasoning in 2026
DeepSeek gives away reasoning for free and sells one of the cheapest APIs. ChatGPT charges for a far wider tool set. Here is the tradeoff in numbers.
By , research by the BestBots team · Updated Oct 18, 2026
Fact checked against each company's published pricing, documentation and verified user ratings. How we score
ChatGPT is the better assistant for most people who can spend $20 per month: GPT-6, image creation, voice, Codex and team controls. DeepSeek is the better pick on a zero budget or for cheap API calls: the app is free with reasoning and search, and the API starts at $0.15 per million input tokens off peak. The tradeoff is data stored in China.
Side by side
| Spec | ChatGPT | DeepSeek |
|---|---|---|
| BestBots Score | 4.6 | 3.7 |
| Starting price | $8 per month | $0 |
| Pricing model | per seat | free |
| Free trial | None listed | None listed |
| Free plan | Yes, unlimited everyday text chats on GPT-5.6 Luna with tool limits | Yes, the chat app is free |
| Paid from | $8 per month (Go, ad supported); Plus $20 per month | No subscription; API from $0.15 per 1M input tokens off peak |
| Top model on paid plan | GPT-6 on Plus; GPT-6 Pro (GPT-6 Astra) on Pro | No subscription; API tops out at DeepSeek-V4-Pro |
| Image generation | Yes, on all plans with plan limits; higher quality on Plus | Not listed |
The short answer
- Choose ChatGPT for a complete assistant with images, voice, agents, connectors, business plans and the largest review base in the category.
- Choose DeepSeek if you want free reasoning chats with no upsell, or a very low cost API for your own apps.
- Avoid DeepSeek for work data unless your employer allows tools that store data in the People's Republic of China.
Pricing
| Tier | ChatGPT | DeepSeek |
|---|---|---|
| Free | $0, GPT-5.6 Luna, unlimited everyday chats | $0, full chat app with DeepThink and Search |
| Entry | Go, $8 per month (ad supported) | None |
| Standard | Plus, $20 per month | None |
| Power | Pro, $100, $200 or $500 per month | None |
| Team | Business, $20 per seat annually or $25 monthly | None |
| API, budget model | Separate OpenAI API pricing | deepseek-flash: $0.30 in, $1.20 out per 1M tokens at peak |
| API, top model | Separate OpenAI API pricing | deepseek-v4-pro: $1.32 in, $3.96 out per 1M tokens at peak |
DeepSeek charges half the peak rate off peak. Peak hours are 01:00 to 04:00 and 06:00 to 10:00 UTC, Monday to Friday, excluding Chinese public holidays, so US business hours fall entirely off peak. Cached input is much cheaper still: $0.003 to $0.006 per million tokens on deepseek-flash.
A worked example: an app that sends 10 million input tokens and gets 2 million output tokens per month on deepseek-flash off peak costs about $1.50 plus $1.20, or $2.70. That is the kind of number that makes DeepSeek popular with developers. For a person who just wants to chat, the relevant price is $0 against $20.
Plan details: ChatGPT pricing and DeepSeek pricing.
Models and features
ChatGPT Plus runs GPT-6 with Medium and High thinking, and Pro adds GPT-6 Pro. DeepSeek's app offers DeepThink reasoning and Search. On the API, deepseek-flash runs DeepSeek-V4.1-Flash with vision and tool calls, and deepseek-v4-pro runs DeepSeek-V4-Pro, which does not accept images. Both API models list a 1M token context.
| Feature | ChatGPT | DeepSeek |
|---|---|---|
| Reasoning mode | Thinking levels on GPT-6 | DeepThink, free |
| Web search | Yes | Yes, free |
| Image generation | Yes, every plan | Not listed |
| Image input | Yes | deepseek-flash API supports vision |
| Voice mode | Yes | Not listed |
| Coding agent | Codex | None; API works with OpenAI and Anthropic formats |
| Memory and projects | Yes | Not listed |
| Team plan and SSO | Business and Enterprise | None |
| Context window | Not stated on pricing page | 1M tokens (API) |
Head to head scenarios
A student or hobbyist with no budget
Winner: DeepSeek. Reasoning and search are free with no paid tier to push you toward. ChatGPT Free is generous on text but limits uploads, images and data analysis.
Office work with sensitive documents
Winner: ChatGPT. Business seats state no training on business data by default and add SAML SSO and MFA. DeepSeek stores data in China, trains on inputs unless you opt out, and has no admin controls.
Building an app on a tight API budget
Winner: DeepSeek. Published rates from $0.15 per million input tokens off peak, a 1M context and OpenAI compatible endpoints make it easy to swap in and cheap to run.
Images, voice and creative projects
Winner: ChatGPT. It creates images on every plan and has voice chats from Free up. DeepSeek lists neither image creation nor voice mode.
Coding with an agent
Winner: ChatGPT. Codex is a full agent included on Plus. DeepSeek gives you a cheap model to plug into third party coding tools, but no agent of its own.
Privacy
DeepSeek's privacy policy states that it directly collects, processes and stores personal data in the People's Republic of China, and that it uses inputs to train and improve its models. It lists a right to opt out of training by contacting its privacy team. Account data and inputs are kept for as long as you have an account.
OpenAI states that ChatGPT Business does not train on business data by default, with retention controls and a Compliance API on Enterprise. On consumer plans, review the data controls in ChatGPT's settings.
Verdict
ChatGPT is the stronger product for nearly every task and the only one of the two with business controls. DeepSeek is the best value in AI if you want free reasoning or a very cheap API, as long as storing data in China is acceptable for what you type. A common setup is ChatGPT for daily work and DeepSeek's API for high volume background jobs.
Read the ChatGPT review and DeepSeek review, or see DeepSeek alternatives.
Frequently asked questions
Is DeepSeek better than ChatGPT?
DeepSeek is better on price: the app is free and the API is among the cheapest published. ChatGPT is better on almost everything else: images, voice, agents, connectors, team controls and app ratings. For most people who can pay $20, ChatGPT is the stronger tool; for zero budget reasoning, DeepSeek is hard to beat.
Is DeepSeek really free?
Yes, the chat app on web and mobile is free with DeepThink and Search, and DeepSeek lists no paid consumer subscription. Developers pay only for API usage, billed per million tokens.
Is DeepSeek safe to use?
DeepSeek's privacy policy states that it collects, processes and stores personal data in the People's Republic of China and uses inputs to train its models, with a right to opt out by contacting its privacy team. Many employers restrict tools that store data in China, so check your policy and avoid sharing sensitive information.
How much cheaper is the DeepSeek API than OpenAI's?
DeepSeek's deepseek-flash costs $0.30 per 1M input tokens and $1.20 per 1M output at peak, and half that off peak. The more capable deepseek-v4-pro is $1.32 input and $3.96 output at peak. Compare these against OpenAI's API price page for the model you would use; DeepSeek is consistently near the bottom of published rates.
Which is better for coding?
ChatGPT for most developers, because Codex is a full coding agent included on Plus, and Free users get GPT-5.6 Terra in Codex. DeepSeek is strong for low cost API calls from your own tools, and its API accepts OpenAI and Anthropic compatible formats.
Can DeepSeek create images?
No image generation is listed for DeepSeek's app. Its deepseek-flash API model accepts images as input (vision), but it does not create them. ChatGPT creates images on every plan.
Does DeepSeek have a team or business plan?
No. DeepSeek lists no team plan, SSO or admin controls. ChatGPT Business is $20 per seat per month billed annually with SAML SSO and no training on business data by default.