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OpenAI: GPT-5 NanoNano Speed. Full Power

Try OpenAI: GPT-5 NanoAPI Documentation

Deploy GPT-5 Nano Fast

Ultra Low Latency

Fastest GPT-5 Variant

OpenAI: GPT-5 Nano handles classification and summarization at minimal cost.

400K Context

Massive Token Window

Process 400,000 input tokens with text and image support via OpenAI: GPT-5 Nano API.

Tool Calling

Function Calling Ready

OpenAI gpt 5 nano api enables structured outputs and agentic workflows efficiently.

Examples

See what OpenAI: GPT-5 Nano can create

Copy any prompt below and try it yourself in the playground.

Code Review

“Review this Python function for bugs and optimize for speed: def fibonacci(n): if n <= 1: return n return fibonacci(n-1) + fibonacci(n-2)”

Data Summary

“Summarize key trends from this sales dataset in bullet points: Q1: 1200 units, Q2: 1500, Q3: 1100, Q4: 1800.”

Text Classify

“Classify this email as spam, urgent, or normal: Subject: Urgent invoice overdue. Pay now or account suspended.”

Image Describe

“Describe elements in this chart image and extract top 3 insights on revenue growth.”

For Developers

A few lines of code.
Nano inference. One call.

ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.

  • Serverless: scales to zero, scales to millions
  • Pay per token, no minimums
  • Python and JavaScript SDKs, plus REST API
API Documentation 
import requests


response = requests.post(
    "https://modelslab.com/api/v7/llm/chat/completions",
    json={
  "key": "YOUR_API_KEY",
  "prompt": "",
  "model_id": ""
}
)
print(response.json())

FAQ

Common questions about OpenAI: GPT-5 Nano

Read the docs

OpenAI: GPT-5 Nano is the fastest, cheapest GPT-5 variant for summarization and classification. It supports 400K context and image inputs. Use OpenAI gpt 5 nano api for low-latency tasks.

Input at $0.05/M tokens, output $0.40/M. Cached inputs cost $0.02/M. Ideal for high-volume OpenAI: GPT-5 Nano workloads.

GPT-5 nano beats prior mini in coding benchmarks at 52.4% SWE-Bench. It prioritizes speed over full mini capabilities. Consider OpenAI: GPT-5 Nano alternative for efficiency.

Chat completions, responses, assistants, and batch APIs work with OpenAI: GPT-5 Nano API. Streaming and function calling enabled.

GPT-5 launched around August 2025 with nano variant. Knowledge cutoff May 31, 2024 for openai: gpt-5 nano.

ModelsLab offers OpenAI: GPT-5 Nano model access or equivalents. Switch seamlessly for similar speed and cost.

Ready to create?

Start generating with OpenAI: GPT-5 Nano on ModelsLab.

Try OpenAI: GPT-5 NanoAPI Documentation