Versus Engine
Llama 3.1 405B vs xAI Grok 4.6
Recorded capabilities and trade-offs for Llama 3.1 405B and xAI Grok 4.6, 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
xAI Grok 4.6
No structured feature record is available.

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

xAI Grok 4.6
xAI's newest release focusing on running specialized AI agents in parallel to synthesize responses.
Editorial notes on record
Recorded strengths
- Usage-based API pricing per token, with no subscription required for API access
- Available in Cursor, Grok Build, the xAI API and partners such as OpenRouter, Vercel and Cloudflare
Recorded limitations
- Benchmark comparisons come from xAI's own launch chart, with competitor figures taken from other labs' published cards
- The fast variant costs twice the standard price
