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GPT-4.1 Nano vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Verdict

GPT-4.1 Nano is significantly cheaper at $0.10/$0.40 per million tokens vs $1.10/$4.40. o3-mini is stronger for coding with a coding ELO of 1340 vs 1150. GPT-4.1 Nano is faster at 150 tokens/sec vs 55 tokens/sec. o3-mini ranks higher overall with an Arena ELO of 1310 vs 1180. GPT-4.1 Nano offers a larger 1048K context window vs 200K.

Side-by-Side Comparison

FeatureGPT-4.1 Nanoo3-mini
ProviderOpenAIOpenAI
Input Price / 1M tokens$0.100$1.10
Output Price / 1M tokens$0.400$4.40
Context Window1.047576M200K
Max Output Tokens32,768100,000
Arena ELO1,1801,310
Coding ELO1,1501,340
TTFT (ms)1301,500
Tokens/sec15055
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use GPT-4.1 Nano

Choose GPT-4.1 Nano when you need: ultra-low pricing, 1m context window, very fast inference, ideal for simple tasks at scale. It excels at chatbots, classification, cost-sensitive, high-volume tasks. It is also the more cost-effective option between the two. Its 1048K context window is larger, making it better for long-document processing.

Strengths:

  • Ultra-low pricing
  • 1M context window
  • Very fast inference
  • Ideal for simple tasks at scale

Best for:

chatbotsclassificationcost-sensitivehigh-volume
When to Use o3-mini

Choose o3-mini when you need: strong mathematical reasoning, good coding performance, affordable reasoning model, large output window. It excels at reasoning, math, coding, science tasks.

Strengths:

  • Strong mathematical reasoning
  • Good coding performance
  • Affordable reasoning model
  • Large output window

Best for:

reasoningmathcodingscience

Frequently Asked Questions

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