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OpenAI: GPT-5 Pro

openai/gpt-5-pro

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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...

Modalities

ImageTextFiles / PDFText

In / out price

$15 / $120 per 1M

Context

400K

Released

Oct 6, 2025

Why use GPT-5 Pro

  • Understands images
  • Reads PDFs and other files
  • Step-by-step reasoning mode
  • Tool and function calling (agent-ready)
  • Structured (JSON) outputs

Pricing

Input$15 / 1M tokens
Output$120 / 1M tokens

List prices via OpenRouter, checked daily. Real cost depends on the provider and on reasoning tokens.

Cost calculator

Pick a task, set how often you run it, and compare what it costs on each model.

ModelPer runPer monthPer 1,000 runs
OpenAI: GPT-5 Pro$0.252$252$252

Estimates from list prices via OpenRouter; real bills vary by provider and reasoning tokens.

Will it fit? Context window simulator

Each square is about one page (500 words). Colored squares are your content; grey squares are free space in the model's context window.

Your content

  • Novel (90,000 words)

Total: about 120,000 tokens (≈ 90,226 words). Token counts are estimates.

Models

OpenAI: GPT-5 Pro

400,000 tokens ≈ 602 pages

Fits: uses 30% of the window (room for 3× this much).

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