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GPT-4 1.5-nano vs Llama 3.1 405B (Together): Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare GPT-4 1.5-nano and Llama 3.1 405B (Together) across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4 1.5-nanoLlama 3.1 405B (Together)
ProviderOpenAITogether AI
Input Price / 1M tokens$0.075$3.50
Output Price / 1M tokens$0.300$3.50
Context Window
128K
4K
Max Output Tokens
4,096
4,096
Arena ELO
1,150
1,240
Coding ELO
1,160
1,200
TTFT (ms)
120
150
Tokens/sec
150
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use GPT-4 1.5-nano

GPT-4 1.5-nano excels at cost-effective, fast-inference tasks.

Strengths:

  • Super cheap
  • Very fast
  • Large context

Best for:

cost-effectivefast-inference
When to Use Llama 3.1 405B (Together)

Llama 3.1 405B (Together) excels at general-purpose, reasoning tasks.

Strengths:

  • Largest model
  • High quality
  • Good pricing

Best for:

general-purposereasoning

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