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Llama 3.1 405B

UnrankedOpen WeightsLlama Community
Price
Free
Self-host
Arena Rank
#219
Overall
Context
128K
tokens
Parameters
405B

One9Founders Verdictfair

The 2024 open-weight dense giant. Still widely hosted. Superseded on quality by Llama 4 and 2026 MoEs, but the license and ecosystem remain useful.

Legacy open giant. Don't start new work here.

Best For

  • existing 405B infra
  • dense-model fine-tunes

Not Great For

  • new greenfield (use Llama 4 or 2026 MoEs)

Startup Recommendation

Migrate new workloads to Llama 4 or a 2026 open MoE.

Capabilities

-Function Calling
-Structured Output
-Vision
-Web Search
-Code Execution
-MCP
-Audio Input
-Video Input
Reasoning
Streaming
-Batch API
-Computer Use

Chatbot Arena Rankings

Overall
#219

Security & Compliance

SOC 2 Type II
GDPR
HIPAA
Enterprise SSO
Audit Logs

Training data policy: N/A — open weights. Self-host for full control.

DPDP Act (India): Self-host in India for full DPDP compliance.

Data residency: Self-hosted

India Availability

Self-host in India