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Model family · Hangzhou DeepSeek Artificial Intelligence Co., Ltd.

DeepSeek

Text-generation family offered through DeepSeek chat and metered API.

Official-source research Sources checked 2026-10-21
Applications and interfaces are not necessarily underlying models. Prices retain their unit and scope; recheck before purchase. Historical or deprecated entries are documentation, not recommendations.

Models #

Name
DeepSeek V4.1 Flash
Version
DeepSeek-V4.1-Flash-1017 / deepseek-flash
Status
Listed in current official API catalog.
Source 5 ↗
Source review: 2026-10-21
Name
DeepSeek V4 Pro
Version
DeepSeek-V4-Pro-0813 / deepseek-v4-pro
Status
Listed in current official API catalog.
Source 1 ↗
Source review: 2026-10-21

Products #

Name
DeepSeek chat/app
Relationship
Consumer interface.
Ui access
Yes
Api access
Not established from reviewed sources
Source 2 ↗
Source review: 2026-10-21
Name
DeepSeek API
Relationship
OpenAI/Anthropic-compatible API.
Ui access
No (as recorded; see scope and evidence)
Api access
Yes
Source 5 ↗
Source review: 2026-10-21

Capabilities #

Task
Text generation
Inputs
  • text
  • image for Flash only
Outputs
  • text
  • JSON
Resolutions
Not established from reviewed sources
Formats
Not established from reviewed sources
Limitations
  • 1M context; maximum output 384K tokens.
  • Thinking/non-thinking and tool calls supported; Pro lacks vision.
Source 1 ↗
Source review: 2026-10-21

Pricing #

Scope
api
Model or product
deepseek-flash
Amount
0.3
Currency
USD
Unit
1M input tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21
Scope
api
Model or product
deepseek-flash
Amount
0.006
Currency
USD
Unit
1M cached input tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21
Scope
api
Model or product
deepseek-flash
Amount
1.2
Currency
USD
Unit
1M output tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21
Scope
api
Model or product
deepseek-v4-pro
Amount
1.32
Currency
USD
Unit
1M input tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21
Scope
api
Model or product
deepseek-v4-pro
Amount
0.044
Currency
USD
Unit
1M cached input tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21
Scope
api
Model or product
deepseek-v4-pro
Amount
3.96
Currency
USD
Unit
1M output tokens
Conditions
Peak: weekdays 01–04 and 06–10 UTC, excluding Chinese holidays. Off-peak is half. Tools separate.
Checked at
2026-10-21
Tax status
Not normalized; consult linked provider terms/region before quoting a checkout total.
Source 1 ↗
Source review: 2026-10-21

Commercial use #

Summary
Current service terms require accuracy checks and AI labeling when publishing outputs. Explicit blanket commercial-output permission and current weight licenses were not verified; do not infer them from older releases.
Source 3 ↗
Source review: 2026-10-21

Privacy #

Summary
Policy permits training/improvement uses, collects prompts and stores personal data in China. Downstream applications require their own policies. No API no-training guarantee established by this review.
Source 4 ↗
Source review: 2026-10-21

Contradictions #

Historical / availability warning: read the documented status below.
Legacy Flash aliases remain accepted but retired backends are replaced by V4.1-Flash-1017.
Source review: 2026-10-21
Pricing URL without trailing slash returned quickstart; trailing slash returned actual pricing.
Source review: 2026-10-21

Unknowns #

Current open-weight licenses
Source review: 2026-10-21
Explicit commercial output license
Source review: 2026-10-21
API-specific retention and training exclusions
Source review: 2026-10-21
App model routing and subscription prices
Source review: 2026-10-21

Sources #

  1. Models and pricing ↗

    Reviewed 2026-10-21 · Evidence status: official page read · Provider-owned source.

  2. Official product homepage ↗

    Reviewed 2026-10-21 · Evidence status: official page read · Provider-owned source.

  3. Terms of use ↗

    Reviewed 2026-10-21 · Evidence status: official page read · Provider-owned source.

  4. Privacy policy ↗

    Reviewed 2026-10-21 · Evidence status: official page read · Provider-owned source.

  5. API quickstart ↗

    Reviewed 2026-10-21 · Evidence status: official page read · Provider-owned source.