Back to Models

OpenAI: GPT-5 Pro

openai/gpt-5-pro
Oct 6, 2025400K context128K max output$15.00/M in · $120.00/M outReasoning

Description

GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.

Specifications

Provider
openai
Context Length
400K
Max Output
128K
Modality
Inimagetextfile
Outtext

Pricing

TypePrice / 1M tokens
Input$15.00
Output$120.00
Web Search$0.01 / call

Quick Start

curl https://api.ominigate.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5-pro",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
OpenAI: GPT-5 Pro — Pricing & API on OminiGate