Guide complet DeepSeek 2026 : le modele IA open source qui rivalise avec GPT-4
Tout savoir sur DeepSeek en 2026. Performances, modeles disponibles, utilisation gratuite, comparaison avec ChatGPT et Claude — le guide complet du challenger chinois.
DeepSeek has emerged as one of the most impressive AI model providers, offering near-GPT-4 performance at dramatically lower costs. This guide covers everything you need to know about using DeepSeek in 2026.
What Is DeepSeek?
DeepSeek is a Chinese AI lab that develops large language models. Their DeepSeek-V3 and DeepSeek-R1 models have achieved remarkable benchmarks, rivaling GPT-4o and Claude 3.5 Sonnet at a fraction of the cost.
Key Models
DeepSeek-V3
- General-purpose LLM with strong reasoning
- 671B parameters (37B active via MoE architecture)
- Competitive with GPT-4o on most benchmarks
- API cost: $0.14 per million input tokens (vs $2.50 for GPT-4o)
DeepSeek-R1
- Reasoning-focused model (similar to OpenAI o1)
- Exceptional at math, science, and complex analysis
- Open-source with MIT license
- Can be run locally
How to Use DeepSeek
Web Interface
Visit chat.deepseek.com for free access to DeepSeek models.
API
API access at api.deepseek.com with OpenAI-compatible endpoints, making migration easy.
Local Execution
Run DeepSeek-R1 locally via Ollama: \`\`\`bash ollama run deepseek-r1 \`\`\`
DeepSeek vs ChatGPT vs Claude
| Feature | DeepSeek | ChatGPT | Claude |
|---|---|---|---|
| Cost | Very low | Medium | Medium |
| Performance | Near GPT-4 | GPT-4o/o3 | Opus/Sonnet |
| Open Source | Yes | No | No |
| Local Run | Yes | No | No |
| Ecosystem | Limited | Extensive | Growing |
Considerations
- Data privacy: Traffic may route through Chinese servers
- Censorship on certain topics related to Chinese politics
- For sensitive use, run models locally
DeepSeek represents the democratization of high-quality AI, making frontier-level models accessible to everyone.
Rédigé et vérifié par
Équipe éditoriale AIpedia
L'équipe éditoriale d'AIpedia recherche, compare et teste les outils d'IA. Nous créons un compte et utilisons réellement chaque outil présenté afin d'en vérifier les tarifs, les fonctionnalités et l'ergonomie avant publication. Nos articles sont régulièrement mis à jour.