LLMversus

GPT-4o vs o3: Pricing, Benchmarks & Verdict (2026)

Pricing verified Aug 3, 2026By LLMversusUpdated August 8, 2026View methodology

⚡ Quick Answer

Compare GPT-4o and o3 across pricing, benchmarks, and capabilities.

Updated: August 3, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4oo3
ProviderOpenAIOpenAI
Input Price / 1M tokens$2.50$2.00
Output Price / 1M tokens$10.00$8.00
Context Window
128K
200K
Max Output Tokens
16,384
100,000
Arena ELO
1,346
1,340
Coding ELO
1,346
1,320
TTFT (ms)
230
600
Tokens/sec
95
15
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4o

GPT-4o excels at general-purpose, multimodal, function-calling tasks.

Strengths:

  • Fast response times
  • Strong multimodal capabilities
  • Code execution support

Best for:

general-purposemultimodalfunction-calling
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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