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

Pricing verified Apr 8, 2026

⚡ Quick Answer

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

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4o Minio3
ProviderOpenAIOpenAI
Input Price / 1M tokens$0.150$10.00
Output Price / 1M tokens$0.600$40.00
Context Window
128K
200K
Max Output Tokens
16,384
100,000
Arena ELO
1,220
1,340
Coding ELO
1,200
1,320
TTFT (ms)
180
600
Tokens/sec
120
15
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 o3

o3 excels at reasoning, coding, math tasks.

Strengths:

  • Highest reasoning capability
  • Best math performance
  • Code execution

Best for:

reasoningcodingmath

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