DeepSeek
DeepSeek V3
DeepSeek V3 is a 671B-parameter Mixture-of-Experts model with 37B parameters activated per token, pre-trained on 14.8 trillion tokens. It delivers frontier-level performance in coding, math, and reasoning at a fraction of the cost of comparable models — one of the highest cost-performance ratios available today.
Architecture
671B MoE
37B active parameters per token, 256 experts with 8 activated.
Training Data
14.8T tokens
Pre-trained on a diverse multilingual corpus.
Context
128K tokens
Full context with efficient KV cache via MLA.
Model Overview
DeepSeek V3 — 671B MoE architecture overview.
Params
671B MoE
Context
128K
Released
Dec 2025
Model overview
Written in a launch-style profile format
DeepSeek V3 uses an innovative multi-head latent attention (MLA) mechanism and auxiliary-loss-free load balancing strategy for efficient inference. Despite its massive parameter count, the MoE architecture keeps inference cost low by activating only 37B parameters per token.
The model achieves top-tier results on MMLU, MATH-500, Codeforces, and other benchmarks, competing directly with models like GPT-4o and Claude 3.5 Sonnet while maintaining significantly lower API pricing.
Model highlights
Key strengths and deployment profile
Core strengths
Exceptional at coding tasks, mathematical reasoning, and structured problem-solving. The MoE architecture provides frontier-level quality at a cost point that enables large-scale deployment.
Best-fit scenarios
Ideal for cost-sensitive production workloads, coding assistants, math tutoring applications, and any scenario where reasoning quality per dollar is the primary metric.
Developer experience
Offers an OpenAI-compatible API with streaming support, function calling, and JSON mode. Straightforward integration for developers already familiar with the OpenAI SDK.
Architecture
671B total parameters with Multi-head Latent Attention (MLA) and DeepSeekMoE architecture. FP8 mixed precision training on a cluster of 2048 NVIDIA H800 GPUs.
See what it can do
See what DeepSeek V3 can do
Built for developers
Give developers more control
Best For
Who should start with this model
When To Choose It
When it belongs on your shortlist
Discounted Official API Key