Last refreshed 2026-05-10. Next refresh: weekly.
Why use GPT-4.1 Nano on OpenAI API?
OpenAI API offers GPT-4.1 Nano with pay-as-you-go pricing at $0.10/1M input tokens. OpenAI is a leading AI research and deployment company dedicated to developing safe and beneficial artificial general intelligence (AGI) for humanity.
Compare GPT-4.1 Nano across 4 providers to find the best fit for your use caseSetup recipe
Python + curlpip install openaiexport OPENAI_API_KEY=...import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(gpt-4.1-nanoRequest example
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="gpt-4.1-nano",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
- The examples expect OPENAI_API_KEY; rename it only if your application config maps the new variable.
Compare GPT-4.1 Nano Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Replicate API | $0.10 | $0.40 |
| OpenRouter | $0.10 | $0.40 |
| OpenAI API | $0.10 | $0.40 |
| Vercel AI Gateway | $0.10 | $0.40 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.10 |
| Output tokens | $0.40 |
Capabilities
About GPT-4.1 Nano
Fastest and most cost-effective GPT-4.1 variant from OpenAI. Released April 2025 alongside GPT-4.1 and GPT-4.1 Mini. 1 million token context window optimized for high-volume applications.
FAQ
What does GPT-4.1 Nano cost on OpenAI API?
On OpenAI API, GPT-4.1 Nano costs $0.10 per 1M input tokens and $0.40 per 1M output tokens.
What is the context window for GPT-4.1 Nano on OpenAI API?
GPT-4.1 Nano supports a 1.05m token context window on OpenAI API.
How does OpenAI API compare to other GPT-4.1 Nano providers?
GPT-4.1 Nano is available from 4 providers. The cheapest input pricing is $0.1/1M tokens from Replicate API.
What API model ID do I use for GPT-4.1 Nano on OpenAI API?
Use the model ID gpt-4.1-nano when calling OpenAI API's API.
Who created GPT-4.1 Nano?
GPT-4.1 Nano was created by OpenAI as part of the GPT-4.1 model family.
Is GPT-4.1 Nano open source?
GPT-4.1 Nano is not open source; the seed data lists it as proprietary.