DeepSeek
🗒️ Qu'est-ce que DeepSeek ?
L'assistant phare d'un laboratoire d'IA chinois — des performances de raisonnement et de codage proches de la pointe, pour une fraction du coût de l'API de GPT et Claude, avec un chat web gratuit et illimité.
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 se distingue particulièrement par 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 et native 1M token context window on every model, ce qui en fait un choix populaire pour cost-sensitive teams running high-volume API workloads et long-context tasks needing the full 1M token window. À garder à l'esprit : built by a Chinese company, which may raise data-residency or compliance concerns for some organizations.
👍 Quels sont les avantages et inconvénients de DeepSeek ?
Avantages
- 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
Inconvénients
- 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
🎯 À quoi sert DeepSeek ?
💰 Combien coûte DeepSeek ?
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)
❓ Questions fréquentes
DeepSeek est-il gratuit ?
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.
À quoi sert DeepSeek ?
DeepSeek est couramment utilisé pour Cost-sensitive teams running high-volume API workloads, Long-context tasks needing the full 1M token window et General-purpose free chat and reasoning.
DeepSeek en vaut-il la peine en 2026 ?
Dans notre évaluation, DeepSeek obtient 4.5/5. Ses principaux atouts sont Web chat is completely free with no paywalled features et API pricing is roughly 35-100x cheaper than GPT-5.5 or Claude Opus 4.8. En revanche, Built by a Chinese company, which may raise data-residency or compliance concerns for some organizations.
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