DeepSeek
🗒️ What is DeepSeek?
Chinese AI lab's flagship assistant -- near-frontier reasoning and coding performance at a fraction of GPT and Claude's API cost, with a free, unlimited web chat.
DeepSeek is built by Hangzhou DeepSeek Artificial Intelligence Basic Technology Research, a Chinese AI lab known for open-weight models that match or approach Western frontier labs on reasoning and coding benchmarks at dramatically lower cost. The DeepSeek V4 family (Flash and Pro tiers) ships with a native 1-million-token context window, and the web chat at chat.deepseek.com is completely free for individuals with no paywalled features.
DeepSeek is particularly strong at web chat is completely free with no paywalled features, aPI pricing is roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8, and native 1M token context window on every model, making it a popular choice for cost-sensitive teams running high-volume API workloads and long-context tasks needing the full 1M token window. One thing to keep in mind: built by a Chinese company, which may raise data-residency or compliance concerns for some organizations.
👍 What are DeepSeek's pros and cons?
Pros
- Web chat is completely free with no paywalled features
- API pricing is roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8
- Native 1M token context window on every model
- Strong reasoning/coding benchmarks despite the low cost
Cons
- Built by a Chinese company, which may raise data-residency or compliance concerns for some organizations
- Peak-hour "Server Busy" throttling on the free web chat
- Smaller third-party tooling ecosystem than ChatGPT or Claude
🎯 What can you use DeepSeek for?
💰 How much does DeepSeek cost?
The DeepSeek web chat and mobile app are free for individuals, with no Plus/Pro paywall on file uploads or long conversations (subject to fair-use throttling during peak hours). Via the API, DeepSeek V4 Flash costs $0.14 per 1M input tokens / $0.28 per 1M output tokens, and V4 Pro costs $0.435 / $0.87 per 1M tokens -- roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8. New developer accounts get a free 5-million-token grant valid for 30 days.
Web Chat (Free)
- Unlimited chat for individuals
- No paywalled features
- File uploads included
API -- V4 Flash
- Input / output token pricing
- 1M token context window
- Cache-hit discounts available
API -- V4 Pro
- Higher-capability tier
- Same 1M token context window
- 5M free tokens for new accounts (30 days)
❓ Frequently Asked Questions
Is DeepSeek free?
The DeepSeek web chat and mobile app are free for individuals, with no Plus/Pro paywall on file uploads or long conversations (subject to fair-use throttling during peak hours). Via the API, DeepSeek V4 Flash costs $0.14 per 1M input tokens / $0.28 per 1M output tokens, and V4 Pro costs $0.435 / $0.87 per 1M tokens -- roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8. New developer accounts get a free 5-million-token grant valid for 30 days.
What is DeepSeek used for?
DeepSeek is commonly used for Cost-sensitive teams running high-volume API workloads, Long-context tasks needing the full 1M token window, and General-purpose free chat and reasoning.
Is DeepSeek worth it in 2026?
In our review, DeepSeek scores 4.5/5. Its main strengths are Web chat is completely free with no paywalled features and API pricing is roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8. On the downside, Built by a Chinese company, which may raise data-residency or compliance concerns for some organizations.
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