LLMversus

GPT-4o Mini vs Llama 3.1 405B: Pricing, Benchmarks & Verdict (2026)

Pricing verified Sep 14, 2026By LLMversusUpdated September 17, 2026View methodology

⚡ Quick Answer

Compare GPT-4o Mini and Llama 3.1 405B across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4o MiniLlama 3.1 405B
ProviderOpenAIMeta
Input Price / 1M tokens$0.150$3.00
Output Price / 1M tokens$0.600$3.00
Context Window
128K
128K
Max Output Tokens
16,384
4,096
Arena ELO
1,098
1,240
Coding ELO
1,098
1,200
TTFT (ms)
180
150
Tokens/sec
120
100
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4o Mini

GPT-4o Mini excels at chatbots, lightweight-tasks, cost-sensitive tasks.

Strengths:

  • Extremely affordable pricing
  • Fast response times
  • Strong for its price tier
  • Good multimodal support

Best for:

chatbotslightweight-taskscost-sensitive
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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