Last refreshed 2026-05-10. Next refresh: weekly.
Why use GPT-4.1 on OpenAI API?
OpenAI API offers GPT-4.1 with pay-as-you-go pricing at $2.00/1M 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 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-4.1Request example
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="gpt-4.1",
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 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | $2.00 | $8.00 |
| Azure OpenAI | — | — |
| OpenAI API | $2.00 | $8.00 |
| Vercel AI Gateway | $2.00 | $8.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.00 |
| Output tokens | $8.00 |
Capabilities
About GPT-4.1
OpenAI's GPT-4.1 model released April 2025, excelling at coding tasks, precise instruction following, and web development. Outperforms GPT-4o in these areas with a 1 million token context window. Available via API and in ChatGPT for Plus, Pro, Team, Enterprise, and Edu users.
FAQ
What does GPT-4.1 cost on OpenAI API?
On OpenAI API, GPT-4.1 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens.
What is the context window for GPT-4.1 on OpenAI API?
GPT-4.1 supports a 1.05m token context window on OpenAI API.
How does OpenAI API compare to other GPT-4.1 providers?
GPT-4.1 is available from 4 providers. The cheapest input pricing is $2/1M tokens from OpenRouter.
What API model ID do I use for GPT-4.1 on OpenAI API?
Use the model ID gpt-4.1 when calling OpenAI API's API.
Who created GPT-4.1?
GPT-4.1 was created by OpenAI as part of the GPT-4.1 model family.
Is GPT-4.1 open source?
GPT-4.1 is not open source; the seed data lists it as proprietary.