GPT-4.1 Nano API Pricing

GPT-4.1 Nano pricing by provider

10 listings across 4 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

Other GPT-4.1 Nano prices on OpenAI

What GPT-4.1 Nano costs in practice

1,000 requests with 2,000 input and 500 output tokens each

100 long-document requests with 100,000 input and 2,000 output tokens each

GPT-4.1 Nano features

Input: text, image. Output: text.

• Function calling
• Parallel tool calls
• Structured output
• Image input
• PDF input
• Prompt caching

Use GPT-4.1 Nano with LiteLLM

Call GPT-4.1 Nano through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

from litellm import completion

response = completion(
    model="gpt-4.1-nano",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: gpt-4.1-nano
    litellm_params:
      model: gpt-4.1-nano
      api_key: os.environ/OPENAI_API_KEY

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gpt-4.1-nano",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT-4.1 Nano FAQ

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