Model comparison

GPT-4o vs GPT-5 Nano

Compare GPT-4o (OpenAI) and GPT-5 Nano (OpenAI) by price, context, capabilities, and latency.

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Which should you pick?

  • Price: GPT-5 Nano is cheaper ($0.05 / 1M tokens input / $0.4 / 1M tokens output) vs GPT-4o ($2.50 / 1M tokens input / $10 / 1M tokens output).
  • Context: GPT-5 Nano has the larger context window (400k tokens).

Side by side

GPT-4o vs GPT-5 Nano — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
GPT-4oopenai/gpt-4oOpenAI$2.50 / 1M tokens$10 / 1M tokens128k
StreamingTool callingJSON modeVision
image understanding, multimodal chat1065-2456msCatalogPlatform curated
GPT-5 Nanoopenai/gpt-5-nanoOpenAI$0.05 / 1M tokens$0.4 / 1M tokens400k
StreamingTool callingJSON modeVision
image understanding, multimodal chat2076-4211msCatalogPlatform curated

FAQ

GPT-4o vs GPT-5 Nano FAQ

Is GPT-4o or GPT-5 Nano cheaper?

GPT-5 Nano is cheaper ($0.05 / 1M tokens input / $0.4 / 1M tokens output) vs GPT-4o ($2.50 / 1M tokens input / $10 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, GPT-4o or GPT-5 Nano?

GPT-5 Nano is larger (400k tokens) vs 128k tokens.

GPT-4o vs GPT-5 Nano for Vision: which should I pick?

Both target Vision. Pick GPT-5 Nano to optimize cost, or GPT-5 Nano for the longer context window. Test both on real prompts before committing production traffic.

GPT-4o detailsGPT-5 Nano detailsPricing calculatorOpenAI-compatible quickstart