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OpenAI · API model

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...

Context
400K
Input / 1M
$1.25
Output / 1M
$10
Released
Aug 7, 2025
Specifications

GPT-5 specs

Provider
OpenAI
Type
API model
Model ID
openai/gpt-5
Context window
400,000 tokens400K
Input price
$1.25per 1M input tokens
Output price
$10per 1M output tokens
Accepts
file, image, text
Produces
text
Released
Aug 7, 2025
Source
OpenRouter
Overview

About GPT-5

GPT-5 is an API model from OpenAI, released on Aug 7, 2025, with a context window of 400,000 tokens, pricing of $1.25 per million input tokens and $10 per million output tokens. It accepts file, image, text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.022.

Specs are sourced from OpenRouter and were last checked on Sep 22, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

GPT-5 questions

What is the context window of GPT-5?

GPT-5 supports a context window of 400,000 tokens.

How much does GPT-5 cost?

GPT-5 is listed at $1.25 per million input tokens and $10 per million output tokens on OpenRouter.

When was GPT-5 released?

GPT-5 was published on Aug 7, 2025.

What inputs does GPT-5 accept?

GPT-5 accepts file, image, text input and produces text output.