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GPT-4 1.5-nano vs GPT-4o: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 20, 2026By LLMversusUpdated June 14, 2026View methodology

⚡ Quick Answer

GPT-4.1 Nano is significantly cheaper at $0.10/$0.40 per million tokens vs $2.50/$10.00. GPT-4o is stronger for coding with a coding ELO of 1265 vs 1150. GPT-4.1 Nano is faster at 150 tokens/sec vs 95 tokens/sec. GPT-4o ranks higher overall with an Arena ELO of 1260 vs 1180. GPT-4.1 Nano offers a larger 1048K context window vs 128K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4 1.5-nanoGPT-4o
ProviderOpenAIOpenAI
Input Price / 1M tokens$0.100$2.50
Output Price / 1M tokens$0.400$10.00
Context Window
128K
128K
Max Output Tokens
4,096
16,384
Arena ELO
1,150
1,260
Coding ELO
1,160
1,265
TTFT (ms)
120
230
Tokens/sec
150
95
MultimodalNoYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
When to Use GPT-4 1.5-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:

  • Super cheap
  • Very fast
  • Large context

Best for:

cost-effectivefast-inference
When to Use GPT-4o

Choose GPT-4o when you need: fast response times, strong multimodal capabilities, code execution support. It excels at general-purpose, multimodal, function-calling tasks.

Strengths:

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

Best for:

general-purposemultimodalfunction-calling

Frequently Asked Questions

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