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Grok 3 vs Llama 3.1 8B: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Grok 3 and Llama 3.1 8B across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGrok 3Llama 3.1 8B
ProviderxAIMeta
Input Price / 1M tokens$2.50$0.060
Output Price / 1M tokens$12.50$0.060
Context Window
200K
128K
Max Output Tokens
8,192
4,096
Arena ELO
1,285
1,120
Coding ELO1,280N/A
TTFT (ms)
200
150
Tokens/sec
90
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use Grok 3

Grok 3 excels at general-purpose, coding, reasoning tasks.

Strengths:

  • Latest xAI model
  • Strong reasoning
  • Large context

Best for:

general-purposecodingreasoning
When to Use Llama 3.1 8B

Llama 3.1 8B excels at cost-effective, fast-inference tasks.

Strengths:

  • Very cheap
  • Super fast
  • Good for lightweight tasks

Best for:

cost-effectivefast-inference

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