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DeepSeek V4
Best Open SourceOpen-weights LLM rivaling GPT-5 at a fraction of cost
4.7(64,000 reviews)
8M+ users
FreemiumText AILLMOpen SourceReasoning
DeepSeek V4 is the most popular open-weights frontier model in 2026 — runs locally, has strong chain-of-thought reasoning, and beats most closed competitors on coding benchmarks.
Key Features
Open weights — fully self-hostable
MoE architecture: very fast inference
Strong coding and math benchmarks
Distilled smaller variants available
Aggressive API pricing
Who Uses It?
👤
Enterprises
On-prem deployment for sensitive data
🔬
Researchers
Fine-tuning, distillation experiments
💻
Developers
Cheap API for high-volume features
Pros & Cons
Pros
Privacy: run entirely on your own hardware
Massively cheaper than closed competitors
Strong math and reasoning
Cons
English/multilingual quality below frontier
Tool use ecosystem still maturing
Self-hosting requires significant GPU
Ready to get started?
Try DeepSeek V4 Today
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Pricing
⚡
freemium
API ~10x cheaper than GPT-5. Weights free for self-host.
Tags
LLMOpen SourceReasoningAffordable
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