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OpenAI: GPT-5

openai/gpt-5

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GPT-5 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...

Modalities

TextImageFiles / PDFText

In / out price

$1.25 / $10 per 1M

Context

400K

Released

Aug 7, 2025

Why use GPT-5

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

Pricing

Input$1.25 / 1M tokens
Output$10 / 1M tokens
Cached input (read)$0.13 / 1M tokens

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

How it ranks

Coding index37.8

Source: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).

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$0.021$21.00$21.00

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

400,000 tokens ≈ 602 pages

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

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