GPT-4o

openai/gpt-4o

Previous generation multimodal flagship. Consider migrating to GPT-5.4.

Specifications

Context Window 128K tokens

Max Output 16.4K tokens

Latency fast

Knowledge Cutoff Oct 2023

Training Data Oct 2023

Pricing

Input $2.50 per 1M tokens

Output $10.00 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-4o

Provider API ID gpt-4o

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-4o",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'