Versus Engine
Llama 3.1 405B vs Perplexity
Recorded capabilities and trade-offs for Llama 3.1 405B and Perplexity, side by side. Missing information is not treated as a tie.
Capabilities on record
Llama 3.1 405B
No structured feature record is available.
Capabilities on record
Perplexity
- Real-time web browsing
- Inline source citations
- Copilot/Pro guided search
- PDF analysis

Llama 3.1 405B
Meta's open-weights behemoth.
Editorial notes on record
Recorded strengths
- Open weights
- GPT-4 level reasoning
- High context length (131072)
- Large vocabulary size (128256)
Recorded limitations
- Requires massive VRAM to run locally
- Complex architecture with many parameters

Perplexity
An AI search engine that delivers direct, cited answers instead of a list of blue links.
Editorial notes on record
Recorded strengths
- Excellent citations and sourcing
- Fast real-time web search
- Pro search asks clarifying questions
Recorded limitations
- Can still hallucinate facts
- Struggles with highly niche academic queries
