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OpenKey

GPT-4.1 Nano

OpenAIReleased Apr 14, 2025

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...

Try in playground
Context window
1.0M tokens
Max output
33K tokens
Input
image, text, file
Output
text
Tokenizer
GPT
Knowledge cutoff
Jun 30, 2024
Released
Apr 14, 2025

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$0.100$0.0030$0.103
Output$0.400$0.012$0.412
Cache read$0.025$0.0008$0.026

Benchmarks

Artificial Analysis

Intelligence index
9.6
Coding index
11.1
Agentic index
1.2

Design Arena

CategoryEloWin rateRank
3Dmodels100146%#89
Codemodels101247.3%#97
Data vizmodels93541.1%#98
Game devmodels103649.6%#90
UI componentsmodels97243.9%#92
Websitesmodels101648.1%#98

Head-to-head preference voting. How we filter and rank

Supported parameters

  • max_completion_tokens
  • max_tokens
  • response_format
  • seed
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model openai/gpt-4.1-nano.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4.1-nano",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="openai/gpt-4.1-nano",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "openai/gpt-4.1-nano",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does GPT-4.1 Nano cost via API?
Through OpenKey, GPT-4.1 Nano costs $0.103 per 1M input tokens and $0.412 per 1M output tokens. That is the provider price ($0.100 / $0.400) plus a flat 3% fee — nothing else.
What is GPT-4.1 Nano's context window?
GPT-4.1 Nano accepts up to 1.0M tokens of context and returns up to 33K tokens per request.
Is GPT-4.1 Nano OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "openai/gpt-4.1-nano" using any OpenAI SDK — only the base URL and API key change.
What inputs does GPT-4.1 Nano support?
GPT-4.1 Nano accepts image, text, file input and produces text output. Its knowledge cutoff is Jun 30, 2024.

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