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OpenAI: GPT-5 Nano

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Match confidence: Name matchSource type: both
Context window
400K
Arena overall rank
Input price
$0.000 / 1M
Output price
$0.000 / 1M

Identifiers & provenance

Primary ID
openai/gpt-5-nano
OpenRouter ID
openai/gpt-5-nano
Arena ID
gpt-5-nano
Canonical slug
openai/gpt-5-nano-2025-08-07
Match method
openrouter_name
Match key
gpt-5-nano

Source semantics

  • Arena rank is a human-preference leaderboard signal, not a universal truth metric.
  • OpenRouter usage/popularity reflects adoption/traffic, not benchmark quality.
  • Pricing fields may differ by provider and can include extra modes beyond prompt/completion.

Read more on Methodology & data sources.

Description

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger counterparts, it retains key instruction-following and safety features. It is the successor to GPT-4.1-nano and offers a lightweight option for cost-sensitive or real-time applications.

Raw fields snapshot

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OpenAI: GPT-5 Nano · NNZen