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Prompt Guard 2 86M vs Llama 3.1 8B Instruct

Prompt Guard 2 86M is cheaper on output tokens, while Llama 3.1 8B Instruct offers a larger context window. Choose Prompt Guard 2 86M or Llama 3.1 8B Instruct based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecPrompt Guard 2 86MLlama 3.1 8B Instruct
ProviderGroqMeta
Input / 1M tokens$0.04$0.05
Output / 1M tokens$0.04$0.08
Context window512131K
Parameters——
Open weightsYes—
ReleasedMay 2025—
LMArena (Chatbot Arena) Elo score—1187
GPQA Diamond score—27.0

FAQ

Is Prompt Guard 2 86M or Llama 3.1 8B Instruct cheaper?

Prompt Guard 2 86M is cheaper on output tokens ($0.04 vs $0.08 per 1M).

Which has the larger context window, Prompt Guard 2 86M or Llama 3.1 8B Instruct?

Llama 3.1 8B Instruct has the larger context window (131K tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.