LLMversus

GPT-4 1.5-mini vs GPT-4 1.5-nano: 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 $0.40/$1.60. GPT-4.1 Mini is stronger for coding with a coding ELO of 1230 vs 1150. GPT-4.1 Nano is faster at 150 tokens/sec vs 115 tokens/sec. GPT-4.1 Mini ranks higher overall with an Arena ELO of 1240 vs 1180.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGPT-4 1.5-miniGPT-4 1.5-nano
ProviderOpenAIOpenAI
Input Price / 1M tokens$0.400$0.100
Output Price / 1M tokens$1.60$0.400
Context Window
128K
128K
Max Output Tokens
4,096
4,096
Arena ELO
1,180
1,150
Coding ELO
1,200
1,160
TTFT (ms)
140
120
Tokens/sec
120
150
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use GPT-4 1.5-mini

Choose GPT-4.1 Mini when you need: 1m token context window at low cost, great balance of speed and quality, strong coding for a mini model, affordable for high-volume use. It excels at chatbots, long-context, cost-sensitive tasks.

Strengths:

  • Affordable
  • Fast
  • Large context

Best for:

cost-effectivegeneral-purpose
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.

Strengths:

  • Super cheap
  • Very fast
  • Large context

Best for:

cost-effectivefast-inference

Frequently Asked Questions

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