Is DeepSeek free to use?

The web and mobile app are free for everyday use. API access is pay-as-you-go, with off-peak rates as low as $0.007 per million input tokens with cache hits, making it one of the cheapest frontier-level APIs.

What is the difference between deepseek-chat and deepseek-reasoner?

deepseek-chat is the fast, low-cost model for drafting and everyday generation. deepseek-reasoner is a thinking mode that works through complex problems step by step, which is better for strategy, analysis, and hard research tasks but slower and more expensive.

Can I use DeepSeek for automated marketing workflows?

Yes. The API supports batch content generation, translation, and research automation, and its low pricing makes high-volume tasks economical. You can also self-host the open-weight models if you need full data control.

Is DeepSeek safe for business use?

DeepSeek offers open-weight models that can be self-hosted for full data control. For the hosted API, review the provider data policies; teams with strict compliance requirements typically deploy the open weights themselves.

Content

4.6Editor Rating

DeepSeek

DeepSeek is the open-source AI assistant from DeepSeek (深度求索) known for near-frontier reasoning performance at dramatically lower API prices, with a free web and mobile app and a pay-as-you-go API for automation.

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Pricing

Free & Paid

Platforms

Web, iOS, Android...

Developer

DeepSeek (深度求索)

Rating

4.6 / 5.0

Last Updated

August 19, 2026

Overview

DeepSeek became a household name in AI when its open-weight models matched leading closed models on reasoning benchmarks at a fraction of the cost, and the 2026 releases continue that pattern.

For marketing teams, it works on two levels.

As an assistant, the free web and mobile app handles content drafting, research, and analysis, with a thinking mode (deepseek-reasoner) that works through complex briefs step by step.

As an API, it is one of the cheapest ways to automate content workflows, with off-peak pricing for the chat model at $0.007 per million input tokens with cache hits, $0.22 per million on a cache miss, and $0.66 per million output tokens. The economics change how teams use AI.

Because DeepSeek is so inexpensive, it becomes practical to run batch content tasks - rewriting product descriptions, generating social variants, drafting multilingual versions - that would be too costly with other frontier APIs.

The trade-offs are real: it is open-weights but not open-source in the strictest sense, its ecosystem of integrations is smaller than OpenAI or Anthropic, and peak-hour pricing doubles.

Still, for cost-sensitive marketing teams and agencies running high-volume generation, DeepSeek offers the best price-to-performance ratio we have tested.

Use Cases

Drafting blog posts, ad copy, and email sequences with the free assistant

Running high-volume batch content generation via the low-cost API

Multilingual content production with automated translation pipelines

Long-document analysis with the 128K context window

Self-hosting open weights for compliance-sensitive marketing teams

Who Is This For

Cost-conscious marketing teams running high-volume AI generation

Agencies that need to keep AI API costs low across client work

Founders and solo marketers who want a free capable assistant

Developers automating content pipelines with a budget API

Teams that want the option to self-host an open-weight LLM

Key Features

Reasoning Mode (deepseek-reasoner)

A thinking-mode model that works through complex marketing briefs, analysis, and strategy step by step before answering.

Free Web & Mobile App

Use DeepSeek as a ChatGPT-style assistant for free on web, iOS, and Android, including file upload and long-context chat.

Ultra-Low API Pricing

Pay-as-you-go API with off-peak rates from $0.007 per million input tokens (cache hit) and $0.66 per million output tokens.

API for Automation

Connect DeepSeek to your marketing stack for batch content generation, translation, and automated research pipelines.

Open Weights

Open-weight models you can self-host or fine-tune, giving teams control over data privacy and costs.

Related Guides

Dive deeper with step-by-step guides from our Knowledge Base.

Pros & Cons

Pros

Near-frontier reasoning at a fraction of the API cost of rivals
Free web and mobile app for everyday marketing tasks
Off-peak pricing makes high-volume batch generation affordable
Open weights allow self-hosting and fine-tuning
128K context window handles long documents and briefs

Cons

Smaller integration ecosystem than OpenAI or Anthropic
Peak-hour pricing is double the off-peak rate
Reasoning mode is slower for simple tasks - best to switch modes
Chinese API provider; teams with strict compliance needs should self-host

Pricing Plans

Popular

Free App

Web, iOS, and Android assistant with reasoning mode.

Free web and mobile chat
deepseek-reasoner thinking mode
File upload support
Long-context conversations

Try Free

API - Chat Model

$0.22/M input tokens

Pay-as-you-go deepseek-chat API for everyday generation.

$0.007/M input tokens with cache hit (off-peak)
$0.22/M input tokens cache miss (off-peak)
$0.66/M output tokens (off-peak)
128K context window

Get API Key

API - Reasoner

$0.66/M input tokens

Thinking-mode API for complex analysis and strategy tasks.

$0.66/M input tokens cache miss (off-peak)
$1.98/M output tokens (off-peak)
Step-by-step reasoning for complex briefs
Peak-hour rates double

Get API Key

Frequently Asked Questions

Editorial Review

4.6

Editorial Team

August 15, 2026

We compared DeepSeek against two leading closed models for a 2,000-page product description rewrite. The output quality was competitive and the API bill was a fraction of the alternatives - for batch content work it is our default choice.