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GPT-4.5 vs o4-mini: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare GPT-4.5 and o4-mini across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4.5o4-mini
ProviderOpenAIOpenAI
Input Price / 1M tokens$75.00$0.500
Output Price / 1M tokens$150.00$2.00
Context Window
128K
128K
Max Output Tokens
8,192
32,768
Arena ELO
1,290
1,260
Coding ELO
1,295
1,270
TTFT (ms)
150
180
Tokens/sec
100
105
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4.5

GPT-4.5 excels at multimodal, vision, general-purpose tasks.

Strengths:

  • Latest OpenAI model
  • Strong multimodal
  • Fast inference

Best for:

multimodalvisiongeneral-purpose
When to Use o4-mini

o4-mini excels at general-purpose, reasoning, coding tasks.

Strengths:

  • Affordable
  • Fast
  • Good reasoning

Best for:

general-purposereasoningcoding

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