GPT-4.1 Nano

openai/gpt-4.1-nano

Fastest and most cost-efficient GPT-4.1 variant. Consider migrating to GPT-5 Nano.

Specifications

Context Window 1M tokens

Max Output 32.8K tokens

Latency fastest

Knowledge Cutoff Jun 2024

Training Data Jun 2024

Pricing

Input $0.10 per 1M tokens

Output $0.40 per 1M tokens

Capabilities

text Text generation and understanding

vision Image and visual input processing

tool use Function calling and tool integration

API Identifiers

Model ID openai/gpt-4.1-nano

Provider API ID gpt-4.1-nano

Usage via Multi-Router

curl https://api.multi-router.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "x-mr-router-id: YOUR_ROUTER_ID" \
  -d '{
    "model": "openai/gpt-4.1-nano",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'