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Llama 3.1 405B (Fireworks) vs o3: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Llama 3.1 405B (Fireworks) and o3 across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureLlama 3.1 405B (Fireworks)o3
ProviderFireworks AIOpenAI
Input Price / 1M tokens$3.00$10.00
Output Price / 1M tokens$3.00$40.00
Context Window
131.072K
200K
Max Output Tokens
4,096
100,000
Arena ELO
1,240
1,340
Coding ELO
1,200
1,320
TTFT (ms)
150
600
Tokens/sec
100
15
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use Llama 3.1 405B (Fireworks)

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

Strengths:

  • Largest model
  • High quality
  • Large context

Best for:

general-purposereasoning
When to Use o3

o3 excels at reasoning, coding, math tasks.

Strengths:

  • Highest reasoning capability
  • Best math performance
  • Code execution

Best for:

reasoningcodingmath

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