OpenAI: GPT-5

OpenAIID: openai/gpt-5

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 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.

Pricing per 1M Tokens

Input (Prompt)$1.25
Output (Completion)$10
Cache Read$0.13
Cache WriteFree
ImageN/A

Specifications

Context Length400K
Max Output Tokens128K
Input ModalitiesText + Image + File
Output ModalitiesText
TokenizerGPT
Instruct TypeN/A
Top Provider Context400K
Top Provider Max Output128K
ModeratedYes

Compare this model

See how OpenAI: GPT-5 stacks up against other models.

vs OpenAI: GPT-5.4 Nanovs OpenAI: GPT-5.4 Minivs OpenAI: GPT-5.4 Provs OpenAI: GPT-5.4vs OpenAI: GPT-5.3 Chat

More from OpenAI

OpenAI: GPT-5.4 Nano
Input$0.20
Context400K
OpenAI: GPT-5.4 Mini
Input$0.75
Context400K
OpenAI: GPT-5.4 Pro
Input$30
Context1.1M
OpenAI: GPT-5.4
Input$2.50
Context1.1M
OpenAI: GPT-5.3 Chat
Input$1.75
Context128K

Last updated: March 23, 2026

First tracked: March 23, 2026