GPT-5 Nano

openai

Lightning-fast and incredibly cost-effective for high-throughput workloads. This model specializes in straightforward instructions and classification tasks where speed is essential. With a massive 400K context window and multimodal support, it processes large volumes of simple tasks efficiently. The thinking capability is tuned for quick, decisive responses rather than deep contemplation. Perfect for production systems handling thousands of simple requests, real-time classification, or any scenario requiring fast, economical processing with GPT-5 architecture.

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Capabilities

Tool Use

PDF Input

Extended Thinking

Image Input

Image Generation

Example Use Cases

Ultra-fast openai response needed

Simple classification at scale

Openai task with minimal cost

Technical Specifications

Context Window

400,000 tokens

Max Output

128,000 tokens

Cache Miss Cost

$0.05 per 1M tokens

Non-Reasoning Cost

$0.40 per 1M tokens

Cache Read Cost

$0.01 per 1M tokens

Web Search Cost

$10 per 1K calls

Code Execution Cost

$30 per 1K calls

Image Generation Cost

$400 per 1K calls

⚠️ Legacy

Made legacy on

Reason

Outdated model

Recommended Replacement

GPT-5.2