Overview
Llama 3.1 405B is Meta's largest open-weight model, designed for enterprise-scale deployments requiring maximum capability. It competes with closed models like GPT-4 while maintaining the flexibility of open weights.
Parameters
405B
Context Window
128K tokens
Knowledge Cutoff
December 2024
License
Llama Community
✅Strengths
- ✓Largest open-weight model available
- ✓GPT-4-level performance on many benchmarks
- ✓Strong reasoning and code generation
- ✓Excellent for complex, multi-step tasks
- ✓Full control over deployment and fine-tuning
⚠️Weaknesses
- ✗Requires significant GPU infrastructure (8x A100+)
- ✗High operational costs for inference
- ✗Not multimodal (text-only)
- ✗Older than Llama 4
Best Use Cases
🏢 Enterprise AI
Large-scale deployments
🔬 Research
Large model studies
💼 SaaS Platforms
AI-powered products
📊 Complex Analysis
Financial, legal, medical
🤖 Advanced Agents
Autonomous systems
🌍 Multi-Tenant
Shared infrastructure
Benchmarks
MMLU88.6%
HumanEval89.0%
GSM8K92.1%