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Grok 3-mini vs Llama 3.1 405B: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Grok 3-mini and Llama 3.1 405B across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGrok 3-miniLlama 3.1 405B
ProviderxAIMeta
Input Price / 1M tokens$0.200$3.00
Output Price / 1M tokens$0.800$3.00
Context Window
128K
128K
Max Output Tokens
4,096
4,096
Arena ELO
1,175
1,240
Coding ELO
1,190
1,200
TTFT (ms)
130
150
Tokens/sec
140
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use Grok 3-mini

Grok 3-mini excels at cost-effective, general-purpose tasks.

Strengths:

  • Very cheap
  • Fast
  • Large context

Best for:

cost-effectivegeneral-purpose
When to Use Llama 3.1 405B

Llama 3.1 405B excels at general-purpose, reasoning, long-context tasks.

Strengths:

  • Largest open model
  • Excellent reasoning
  • High quality outputs

Best for:

general-purposereasoninglong-context

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