OpenAI logo

GPT-5 Nano

The fastest and lowest-cost tier of the GPT-5 family, built for high-volume, low-latency tasks such as summarization and classification.

Jump to: Specs Pricing Similar models FAQ More from OpenAI
Visit website Compare vs other LLMs →
List price via OpenAI
Input
$0.05 /1M tokens
Output
$0.40 /1M tokens
OpenAI DigitalOcean Azure Replicate 4 providers

Key Specifications

Context window
400K tokens
Max output
128K tokens
Knowledge cutoff
web search available
Released
Inputs
Image, text
Capabilities Show details
Reasoning Thinks before it answers, always on or as a switchable mode. Function calling Connect to external tools, APIs, and systems. Structured output Return responses in structured formats like JSON. Web search Search the web for up-to-date information. Code execution Write and execute code in a sandboxed environment. File upload Process uploaded documents, spreadsheets, and other files. MCP Connect to services via Model Context Protocol. Image generation Generate and edit images from text prompts.

Hosted API pricing

Provider Input /1M tokens Output /1M tokens Cached input /1M Cost at 10M in + 2M out
OpenAI logo OpenAI Creator $0.05 $0.40 $0.01 $1.30 View
DigitalOcean logo DigitalOcean $0.05 $0.40 $0.01 $1.30 View
Microsoft Azure logo Azure $0.05 $0.40 $0.01 $1.30 View
Replicate logo Replicate $0.05 $0.40 $1.30 View

Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.

Similarly priced models

The models nearest GPT-5 Nano by blended rate, each at its own cheapest provider.

Model Blended /1M vs GPT-5 Nano
Alibaba Cloud Qwen3-Coder-30B-A3B Alibaba Cloud $0.0917 −15%
Meta Llama 3.2 3B Meta $0.0983 −9%
Alibaba Cloud Qwen3-30B-A3B FP8 Alibaba Cloud $0.0983 −9%
Mistral Ministral 3 3B Mistral $0.10 −8%
Z.AI GLM-5.3-Flash Z.AI $0.1083 0%
OpenAI GPT-5 Nano This model OpenAI $0.1083
Alibaba Cloud Qwen3.5-35B-A3B Alibaba Cloud $0.1267 +17%
Alibaba Cloud Qwen3.6-35B-A3B Alibaba Cloud $0.1283 +18%
Google Cloud Gemma 3 27B Instruct Google Cloud $0.1333 +23%
Google Cloud Gemma 4 26B A4B Google Cloud $0.1333 +23%
Alibaba Cloud Qwen3-32B FP8 Alibaba Cloud $0.1333 +23%

Prices are USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.

Frequently Asked Questions

What is GPT-5 Nano good for?

Summarization, classification and other high-volume tasks, at the lower-cost end of OpenAI's lineup.

When is GPT-5 Nano not a good fit?

Open-ended reasoning or agent work, which suit the larger GPT-5 tiers, and audio input, which it lacks. OpenAI recommends GPT-5.6 Luna for new speed- and cost-sensitive work and plans to shut down the API model in December 2026.

What is the cheapest way to run GPT-5 Nano?

The cheapest hosted rate is $0.05 / $0.40 per 1M tokens via OpenAI.

How does GPT-5 Nano compare with GPT-5.4 Nano?

OpenAI says GPT-5.4 Nano brings GPT-5.4-class ability to its smallest tier, aimed at classification, data extraction, ranking and coding subagents where GPT-5 Nano was pitched at summarization and classification, and adds context compaction. Same 400K-token context and text and image input. GPT-5 Nano lists at 75% less per 1M input tokens and 68% less per 1M output tokens than GPT-5.4 Nano. It came out 7 months earlier and has an older knowledge cutoff (May 2024 against August 2025).

Can I self-host GPT-5 Nano?

No. OpenAI does not publish the weights; GPT-5 Nano is available only through hosted APIs.

More from OpenAI

Model Context Input /1M Output /1M
OpenAI GPT-4.1 Nano 1M $0.10 $0.40
OpenAI GPT-OSS-120B Open weights 131K $0.04 $0.18
OpenAI GPT-4o Mini 128K $0.15 $0.60
OpenAI GPT-OSS-20B Open weights 131K $0.03 $0.14
OpenAI GPT-5.6 Luna 1M $0.20 $1.20
OpenAI GPT-5.4 Nano 400K $0.20 $1.25
OpenAI GPT-5 Mini 400K $0.25 $2.00
OpenAI GPT-4.1 Mini 1M $0.40 $1.60