DeepSeek vs. Mistral Le Chat: data protection per plan
DeepSeek (2 plans) and Mistral Le Chat (4 plans) side by side: DPA, training on inputs, hosting and data retention per plan, based on the providers’ public documents. Without rating.
Last updated: (latest review date of the tools shown)
At a glance
Each value is listed with the plans it applies to. Pick a tier to see only plans of that tier; if plans are chosen in the plan comparison below, the table shows exactly those.
All plans: each value is listed with the plans it applies to.
| Feature | DeepSeek | Mistral Le Chat |
|---|---|---|
| Provider based in | Hangzhou DeepSeek Artificial Intelligence Co., Ltd., 'registered address in China' | Paris, France |
| Plans recorded | 2 | 4 |
| Hosting | not documented: all 2 plans | EU option: all 4 plans |
| Training on inputs | opt-out available: Chatnot documented: Open Platform API | opt-out available: Free, Pro, Teamno: Enterprise |
| DPA | not documented: all 2 plans | yes: all 4 plans |
| As of | 18 Oct 2026 | 18 Oct 2026 |
Plans compared
Comparing: DeepSeek Chat vs. Mistral Le Chat Free
| Feature | DeepSeekChat (web and app) | Mistral Le ChatFree |
|---|---|---|
| differs by plan | not publicly documented | yes |
| Details: DPA available | not publicly documented | yes (automatic) when used for an organisation: the Commercial Terms of Service apply to "Mistral AI Studio, Vibe" without restriction by plan when concluded for an organisation; Section 12.3: "the Data Processing Agreement ... will apply between the Parties" (q3). No DPA for consumers: the EU consumer terms (Effective 2026-10-08, Section 10) describe Mistral "as a data controller" and refer business use to the Commercial Terms (q10). Provider’s DPA |
| opt-out available | opt-out available | |
| Details: Training on inputs | Terms of use (as of 2026-03-27, section 4.3): DeepSeek may use inputs and outputs 'to a minimal extent', after encryption and de-identification, to improve the services and the underlying technologies; opt-out available by switching off 'Improve the model for everyone'. Privacy policy: data is used, among other things, to train and improve the models; right to object to use for training. Document 'Model Mechanism and Training Methods of DeepSeek': in the optimisation phase, a small portion of the training data may be based on user input, which is then encrypted, de-identified and anonymised. | Help Center: "Input and output data are used by default to train our artificial intelligence models, unless you opt out of training at any time." (Vibe, controls by plan). Feedback (thumbs up/down) permits use of the rating, input and output for training irrespective of the opt-out. |
| differs by plan | not publicly documented | EU option |
| Details: Data residency | Privacy policy (as of 2026-02-10): 'we directly collect, process and store your Personal Data in People's Republic of China'. The category 'US only/EU option' does not apply; the selection list does not include China, hence 'not publicly documented' as the enum value here. An EU or US region: not publicly documented. | Help Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved). |
| differs by plan | not publicly documented | list available |
| Details: List published | not publicly documented |
|
| differs by plan | Privacy policy: storage for as long as… | Vibe: input and output until deletion of… |
| Details: Data retention | Privacy policy: storage for as long as necessary for the services and the stated purposes; for accounts, as long as the account exists; legal and legitimate interests may justify longer retention. Fixed retention periods: not publicly documented. Chat history can be deleted in the settings; after account deletion, access cannot be restored. | Vibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies. |
| differs by plan | free | 0 USD |
| Details: Price | free of charge (website app description: 'Chat with leading AI models for free.'; no paid chat plan found) | 0 USD or 0 EUR (Free, as of 2026-10-18) |
| yes | yes | |
| Details: AI features included | yes (AI chatbot; according to the terms of use, services based on large language models) | yes (limited messages, web searches, coding sessions) |
| 4 sources | 8 sources | |
| Details: Sources with retrieval date |
|
|
Contract / DPA
- differs by plan
- DeepSeek Chatnot publicly documented
- Mistral Le Chat Freeyes
- DeepSeek Chat
not publicly documented
Mistral Le Chat Freeyes (automatic) when used for an organisation: the Commercial Terms of Service apply to "Mistral AI Studio, Vibe" without restriction by plan when concluded for an organisation; Section 12.3: "the Data Processing Agreement ... will apply between the Parties" (q3). No DPA for consumers: the EU consumer terms (Effective 2026-10-08, Section 10) describe Mistral "as a data controller" and refer business use to the Commercial Terms (q10).
Provider’s DPA
Training
- DeepSeek Chatopt-out available
- Mistral Le Chat Freeopt-out available
- DeepSeek Chat
Terms of use (as of 2026-03-27, section 4.3): DeepSeek may use inputs and outputs 'to a minimal extent', after encryption and de-identification, to improve the services and the underlying technologies; opt-out available by switching off 'Improve the model for everyone'. Privacy policy: data is used, among other things, to train and improve the models; right to object to use for training. Document 'Model Mechanism and Training Methods of DeepSeek': in the optimisation phase, a small portion of the training data may be based on user input, which is then encrypted, de-identified and anonymised.
Mistral Le Chat FreeHelp Center: "Input and output data are used by default to train our artificial intelligence models, unless you opt out of training at any time." (Vibe, controls by plan). Feedback (thumbs up/down) permits use of the rating, input and output for training irrespective of the opt-out.
Hosting
- differs by plan
- DeepSeek Chatnot publicly documented
- Mistral Le Chat FreeEU option
- DeepSeek Chat
Privacy policy (as of 2026-02-10): 'we directly collect, process and store your Personal Data in People's Republic of China'. The category 'US only/EU option' does not apply; the selection list does not include China, hence 'not publicly documented' as the enum value here. An EU or US region: not publicly documented.
Mistral Le Chat FreeHelp Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved).
Sub-processors
- differs by plan
- DeepSeek Chatnot publicly documented
- Mistral Le Chat Freelist available
- DeepSeek Chatnot publicly documentedMistral Le Chat Free
- could not be retrieved (list only in the Trust Center trust.mistral.ai/subprocessors, a JavaScript application; the Help Center and the DPA refer to it, q11, q1)
Retention
- differs by plan
- DeepSeek ChatPrivacy policy: storage for as long as…
- Mistral Le Chat FreeVibe: input and output until deletion of…
- DeepSeek ChatPrivacy policy: storage for as long as necessary for the services and the stated purposes; for accounts, as long as the account exists; legal and legitimate interests may justify longer retention. Fixed retention periods: not publicly documented. Chat history can be deleted in the settings; after account deletion, access cannot be restored.Mistral Le Chat FreeVibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies.
Price
- differs by plan
- DeepSeek Chatfree
- Mistral Le Chat Free0 USD
- DeepSeek Chat
free of charge (website app description: 'Chat with leading AI models for free.'; no paid chat plan found)
Mistral Le Chat Free0 USD or 0 EUR (Free, as of 2026-10-18)
- DeepSeek Chatyes
- Mistral Le Chat Freeyes
- DeepSeek Chat
yes (AI chatbot; according to the terms of use, services based on large language models)
Mistral Le Chat Freeyes (limited messages, web searches, coding sessions)
Evidence
- DeepSeek Chat4 sources
- Mistral Le Chat Free8 sources
- DeepSeek Chat
- DeepSeek Privacy Policy (Last Update 2026-02-10)Privacy notice, retrieved 18 Oct 2026
- DeepSeek Terms of Use (Last Update 2026-03-27)Terms and conditions, retrieved 18 Oct 2026
- Model Mechanism and Training Methods of DeepSeekDocumentation, retrieved 18 Oct 2026
- DeepSeek website (home page and Transparency Center)Product page, retrieved 18 Oct 2026
Mistral Le Chat Free- Mistral AI Data Processing Addendum (Effective 2026-07-27)DPA, retrieved 18 Oct 2026
- Mistral AI Privacy Policy (Effective 2026-09-03)Privacy notice, retrieved 7 Oct 2026
- Commercial Terms of Service (Effective 2026-09-25)Terms and conditions, retrieved 18 Oct 2026
- Do you use my user data to train your AI models? (2026-08-31)Documentation, retrieved 18 Oct 2026
- Mistral PricingPricing page, retrieved 18 Oct 2026
- Where do you store my data or my Organization's data? (2026-08-12)Documentation, retrieved 14 Oct 2026
- Mistral AI Terms of Service for consumers in the EU (Effective 2026-10-08)Terms and conditions, retrieved 18 Oct 2026
- Who are your subprocessors, and how can I stay updated on changes? (2026-08-12)Documentation, retrieved 18 Oct 2026
| Feature | DeepSeek | Mistral Le Chat |
|---|---|---|
| differs by tool | not publicly documentedall 2 plans | yesall 4 plans |
| Details: DPA available |
|
|
| differs by tool |
|
|
| Details: Training on inputs |
|
|
| differs by tool | not publicly documentedall 2 plans | EU optionall 4 plans |
| Details: Data residency |
|
|
| differs by tool | not publicly documentedall 2 plans | list availableall 4 plans |
| Details: List published |
|
|
| differs by tool | Privacy policy: storage for as long as…all 2 plans | Vibe: input and output until deletion of…all 4 plans |
| Details: Data retention |
|
|
| differs by tool |
|
|
| Details: Price |
|
|
| yesall 2 plans | yesall 4 plans | |
| Details: AI features included |
|
|
| 6 sources | 8 sources | |
| Details: Sources with retrieval date |
|
|
Contract / DPA
- differs by tool
- DeepSeeknot publicly documentedall 2 plans
- Mistral Le Chatyesall 4 plans
- DeepSeek
- Chat (web and app)
not publicly documented
- Open Platform API (usage-based)
not publicly documented
Mistral Le Chat- Free
yes (automatic) when used for an organisation: the Commercial Terms of Service apply to "Mistral AI Studio, Vibe" without restriction by plan when concluded for an organisation; Section 12.3: "the Data Processing Agreement ... will apply between the Parties" (q3). No DPA for consumers: the EU consumer terms (Effective 2026-10-08, Section 10) describe Mistral "as a data controller" and refer business use to the Commercial Terms (q10).
Provider’s DPA - Pro
yes (automatic) when used for an organisation: the Commercial Terms of Service apply to "Mistral AI Studio, Vibe" without restriction by plan when concluded for an organisation; Section 12.3: "the Data Processing Agreement ... will apply between the Parties" (q3). No DPA for consumers: the EU consumer terms (Effective 2026-10-08, Section 10) describe Mistral "as a data controller" and refer business use to the Commercial Terms (q10).
Provider’s DPA - Team
yes (automatic)
Provider’s DPA - Enterprise
yes (automatic)
Provider’s DPA
- Chat (web and app)
Training
- differs by tool
- DeepSeek
- opt-out availableChat (web and app)
- not publicly documentedOpen Platform API (usage-based)
- Mistral Le Chat
- opt-out availableFree, Pro, Team
- noEnterprise
- DeepSeek
- Chat (web and app)
Terms of use (as of 2026-03-27, section 4.3): DeepSeek may use inputs and outputs 'to a minimal extent', after encryption and de-identification, to improve the services and the underlying technologies; opt-out available by switching off 'Improve the model for everyone'. Privacy policy: data is used, among other things, to train and improve the models; right to object to use for training. Document 'Model Mechanism and Training Methods of DeepSeek': in the optimisation phase, a small portion of the training data may be based on user input, which is then encrypted, de-identified and anonymised.
- Open Platform API (usage-based)
The Open Platform terms (effective 2026-04-29) govern ownership of inputs and outputs (the customer retains rights to inputs and receives rights to outputs) but contain no express statement on the use of API inputs for training; they refer to the document 'Model Principles and Training Methods Explanation', which likewise does not distinguish between chat and API. The terms of use (section 4.3) and the privacy policy apply to 'Services' in general; an API-specific opt-out is not described. For end-user data in its own applications, according to the privacy policy and the Open Platform terms (5.5), the developer is the controller.
Mistral Le Chat- Free
Help Center: "Input and output data are used by default to train our artificial intelligence models, unless you opt out of training at any time." (Vibe, controls by plan). Feedback (thumbs up/down) permits use of the rating, input and output for training irrespective of the opt-out.
- Pro
As for Free. Pricing page (comparison table Free/Pro/Team, row "Model training"): "Opt-out" (q7).
- Team
Pricing page (comparison table Free/Pro/Team, row "Model training"): "Opt-out" for Team as well (q7). DPA 2.3: Mistral may process for training as controller "unless Customer is or has opted-out of training". Commercial ToS 4.2 provides for training for products with an opt-out default.
- Enterprise
Help Center: "Enterprise customers are opted out of training by default." Opt-in switch at admin level. The feedback exception continues to apply. Labs/preview models: training without effect of the opt-out setting (Commercial ToS 4.2).
- Chat (web and app)
Hosting
- differs by tool
- DeepSeeknot publicly documentedall 2 plans
- Mistral Le ChatEU optionall 4 plans
- DeepSeek
- Chat (web and app)
Privacy policy (as of 2026-02-10): 'we directly collect, process and store your Personal Data in People's Republic of China'. The category 'US only/EU option' does not apply; the selection list does not include China, hence 'not publicly documented' as the enum value here. An EU or US region: not publicly documented.
- Open Platform API (usage-based)
Privacy policy (as of 2026-02-10): 'we directly collect, process and store your Personal Data in People's Republic of China'. The category 'US only/EU option' does not apply; the selection list does not include China, hence 'not publicly documented' as the enum value here. An EU or US region: not publicly documented. Region of API processing: not publicly documented.
Mistral Le Chat- Free
Help Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved).
- Pro
Help Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved).
- Team
Help Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved).
- Enterprise
Help Center (2026-08-12): "By default, your data is hosted in the European Union." US hosting only when the US API endpoint is used explicitly. Depending on the feature, temporary transfer outside the EU to sub-processors (list in the Trust Center) with Art. 46 safeguards/SCCs, in some cases Zero Data Retention or encryption. Specific data centres/hosting providers only in the Trust Center (JS, could not be retrieved). Enterprise: individual features involving non-EU transfer can be deactivated at organisation level; deployment on-premises, private cloud or Mistral Cloud possible (product page).
- Chat (web and app)
Sub-processors
- differs by tool
- DeepSeeknot publicly documentedall 2 plans
- Mistral Le Chatlist availableall 4 plans
- DeepSeek
- Chat (web and app)not publicly documented
- Open Platform API (usage-based)not publicly documented
Mistral Le Chat- Free
- could not be retrieved (list only in the Trust Center trust.mistral.ai/subprocessors, a JavaScript application; the Help Center and the DPA refer to it, q11, q1)
- Pro
- could not be retrieved (list only in the Trust Center trust.mistral.ai/subprocessors, a JavaScript application; the Help Center and the DPA refer to it, q11, q1)
- Team
- could not be retrieved (list only in the Trust Center trust.mistral.ai/subprocessors, a JavaScript application; the Help Center and the DPA refer to it, q11, q1)
- Enterprise
- could not be retrieved (list only in the Trust Center trust.mistral.ai/subprocessors, a JavaScript application; the Help Center and the DPA refer to it, q11, q1)
Retention
- differs by tool
- DeepSeekPrivacy policy: storage for as long as…all 2 plans
- Mistral Le ChatVibe: input and output until deletion of…all 4 plans
- DeepSeek
- Chat (web and app)Privacy policy: storage for as long as necessary for the services and the stated purposes; for accounts, as long as the account exists; legal and legitimate interests may justify longer retention. Fixed retention periods: not publicly documented. Chat history can be deleted in the settings; after account deletion, access cannot be restored.
- Open Platform API (usage-based)Privacy policy: storage for as long as necessary for the services and the stated purposes; for accounts, as long as the account exists; legal and legitimate interests may justify longer retention. Fixed retention periods: not publicly documented. API-specific retention: not publicly documented.
Mistral Le Chat- FreeVibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies.
- ProVibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies.
- TeamVibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies.
- EnterpriseVibe: input and output until deletion of the account or conversation. DPA §10.1: deletion/return after access ends, data no longer accessible after 30 days. API (for comparison): output generation plus 30 rolling days of abuse monitoring, unless Zero Data Retention applies.
Price
- differs by tool
- DeepSeek
- freeChat (web and app)
- per tokenOpen Platform API (usage-based)
- Mistral Le Chat
- 0 USDFree
- 14.99 USD/mo… (further prices in the details)Pro
- 24.99 USD/user/moTeam
- not publicly documentedEnterprise
- DeepSeek
- Chat (web and app)
free of charge (website app description: 'Chat with leading AI models for free.'; no paid chat plan found)
- Open Platform API (usage-based)
Per 1M tokens, in USD (pricing page): deepseek-flash: input (cache hit) USD 0.003 off-peak / USD 0.006 peak; input (cache miss) USD 0.15 / USD 0.3; output USD 0.6 / USD 1.2. deepseek-v4-pro: cache hit USD 0.022 / USD 0.044; cache miss USD 0.66 / USD 1.32; output USD 1.98 / USD 3.96. Peak hours: 01:00-04:00 and 06:00-10:00 UTC, Monday to Friday (excluding Chinese public holidays); otherwise half price. Search and Fetch API USD 0.75 each per 1,000 successful requests. Billed against topped-up or granted credit; DeepSeek may change prices; no indication whether incl. VAT.
Mistral Le Chat- Free
0 USD or 0 EUR (Free, as of 2026-10-18)
- Pro
14.99 USD or 14.99 EUR/month excl. taxes (pricing page with USD/EUR switch); verified students 5.99 USD or 5.99 EUR/month (max. 12 months). The pricing page shows monthly prices only, no annual billing (as of 2026-10-18)
- Team
24.99 USD or 24.99 EUR per user/month excl. taxes (pricing page with USD/EUR switch); the pricing page shows monthly prices only, no annual billing (as of 2026-10-18)
- Enterprise
not publicly documented ("Contact us")
- Chat (web and app)
- DeepSeekyesall 2 plans
- Mistral Le Chatyesall 4 plans
- DeepSeek
- Chat (web and app)
yes (AI chatbot; according to the terms of use, services based on large language models)
- Open Platform API (usage-based)
yes (models deepseek-flash = DeepSeek-V4.1-Flash-1017 and deepseek-v4-pro = DeepSeek-V4-Pro-0813, each with 1M-token context, up to 384K output, thinking/non-thinking mode, tool calls, JSON output, Responses API, OpenAI- and Anthropic-compatible interface; vision only with deepseek-flash; additionally Search and Fetch API)
Mistral Le Chat- Free
yes (limited messages, web searches, coding sessions)
- Pro
yes
- Team
yes
- Enterprise
yes
- Chat (web and app)
Evidence
- DeepSeek6 sources
- Mistral Le Chat8 sources
- DeepSeek
- Models & PricingPricing page, retrieved 18 Oct 2026
- DeepSeek Privacy Policy (Last Update 2026-02-10)Privacy notice, retrieved 18 Oct 2026
- DeepSeek Terms of Use (Last Update 2026-03-27)Terms and conditions, retrieved 18 Oct 2026
- DeepSeek Open Platform Terms of Service (effective 2026-04-29)Terms and conditions, retrieved 18 Oct 2026
- Model Mechanism and Training Methods of DeepSeekDocumentation, retrieved 18 Oct 2026
- DeepSeek website (home page and Transparency Center)Product page, retrieved 18 Oct 2026
Mistral Le Chat- Mistral AI Data Processing Addendum (Effective 2026-07-27)DPA, retrieved 18 Oct 2026
- Mistral AI Privacy Policy (Effective 2026-09-03)Privacy notice, retrieved 7 Oct 2026
- Commercial Terms of Service (Effective 2026-09-25)Terms and conditions, retrieved 18 Oct 2026
- Do you use my user data to train your AI models? (2026-08-31)Documentation, retrieved 18 Oct 2026
- Mistral PricingPricing page, retrieved 18 Oct 2026
- Where do you store my data or my Organization's data? (2026-08-12)Documentation, retrieved 14 Oct 2026
- Mistral AI Terms of Service for consumers in the EU (Effective 2026-10-08)Terms and conditions, retrieved 18 Oct 2026
- Who are your subprocessors, and how can I stay updated on changes? (2026-08-12)Documentation, retrieved 18 Oct 2026
not documentedmeans: not publicly documented, not verifiable in any provider source. It does not mean “no”.
No guarantee of accuracy, not legal advice. Each entry is valid as of the date shown. Open points are listed on the detail pages.
More comparisons
DeepSeek compared with
Mistral Le Chat compared with
Individual pages: DeepSeek, Mistral Le Chat. All tools in the category: AI assistants & search.