# GPT-5.4 Nano: AI model fact sheet

- **Provider:** openai
- **Released:** 2026-03-17
- **Context window:** 400,000 tokens
- **API pricing:** $0.20 / 1M input, $1.25 / 1M output
- **OpenRouter ID:** openai/gpt-5.4-nano
- **Capabilities:** conversation, reasoning, code-generation, analysis

GPT-5.4 Nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency use cases such as classification, data extraction, ranking, and sub-agent execution. The model prioritizes responsiveness and efficiency over deep reasoning, making it ideal for pipelines that require fast, reliable outputs at scale.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gpt-5.4-nano