OpenAI
GPT-5 Nano
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.
At a glance
- Input / 1M
- $0.05
- Output / 1M
- $0.40
- Context
- 400K
- Max output
- 128K
- Intelligence
- 13
- Released
- Aug 2025
Pricing
GPT-5 Nano API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $0.05 |
|---|---|
| Output tokensPer 1M tokens | $0.40 |
| Cached input (read)Per 1M tokens | $0.01 |
| Cache writePer 1M tokens | Not available |
| Web searchPer request | $0.01 |
Chat message
2K in, 500 out
$0.30
per 1,000 requests
Coding task
30K in, 4K out
$3.10
per 1,000 requests
Long document summary
150K in, 2K out
$8.30
per 1,000 requests
Benchmarks
GPT-5 Nano benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
13
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input types
- File, Image, Text
- Output types
- Text
- Reasoning effort
- High, Medium, Low, Minimal
- Release date
- August 7, 2025
- Knowledge cutoff
- May 31, 2024
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
GPT-5 Nano vs other models
See how GPT-5 Nano stacks up head to head on price, benchmarks, and features.
VS
GPT-5 Nano vs Gemini 2.5 Flash Lite
OpenAI vs Google
See comparisonVSGPT-5 Nano vs GPT-6 Luna Pro
OpenAI vs OpenAI
See comparisonVSGPT-5 Nano vs gpt-oss-120b
OpenAI vs OpenAI
See comparisonVSGPT-5 Nano vs Gemma 4 31B
OpenAI vs Google
See comparisonVSGPT-5 Nano vs Gemma 4 26B A4B
OpenAI vs Google
See comparisonVSGPT-5 Nano vs gpt-oss-20b
OpenAI vs OpenAI
See comparisonMore GPT-5 Nano comparisons
- GPT-5 Nano vs GPT-4o-mini
- GPT-5 Nano vs Qwen3 235B A22B Instruct 2507
- GPT-5 Nano vs DeepSeek V3.1
- GPT-5 Nano vs Mercury 2.5
- GPT-5 Nano vs Qwen3.5-9B
- GPT-5 Nano vs Nemotron 3.5 Lightning
- GPT-5 Nano vs GPT-4.1 Nano
- GPT-5 Nano vs Granite 4.2 8B
- GPT-5 Nano vs GLM 4.7 Flash
- GPT-5 Nano vs DeepSeek V3.2 Exp
- GPT-5 Nano vs Nemotron 3 Super
- GPT-5 Nano vs Mistral Small 4
- GPT-5 Nano vs Step 3.5 Flash
- GPT-5 Nano vs Mercury 2
Alternatives
GPT-5 Nano alternatives
Similar models worth considering, and where each one has the edge.
Gemma 4 26B A4B
Z.ai
GLM 4.7 Flash
Gemma 4 31B
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does GPT-5 Nano cost?
GPT-5 Nano costs $0.05 per 1M input tokens and $0.40 per 1M output tokens through the API. A typical chat message costs about $0.30 per 1,000 messages.
What is the context window of GPT-5 Nano?
GPT-5 Nano accepts up to 400K tokens of input and can write up to 128K tokens in a single response.
What is the best alternative to GPT-5 Nano?
Gemma 4 26B A4B from Google is a strong alternative. It offers: 1.3x cheaper output, higher intelligence score, accepts video.
Can I use GPT-5 Nano alongside other models?
Yes. Shortcut Chat sends one prompt to GPT-5 Nano and any other models you pick at the same time, so you can compare answers side by side.
Try GPT-5 Nano next to every other model.
Use GPT-5 Nano alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.