OpenAI
OpenAI
Frontier

GPT-5

Frontier

OpenAI's 2025 flagship, unified reasoning + multimodal model with a 400K context. Replaces the GPT-4 line as the default ChatGPT and API model.

GPT-5 is a frontier AI model from OpenAI. It costs $1.250 per million input tokens and $10.000 per million output tokens (blended $3.875/M), with a 400,000-token context window.

INPUT
$1.250/M
per million input tokens
OUTPUT
$10.000/M
per million output tokens
BLENDED 70/30
$3.875/M
unchanged since 3 May
CONTEXT
400,000
tokens
What it is good at
  • Unified reasoning + chat
  • 400K context
  • Native vision
  • Strong tool use
  • Best-in-class JSON mode
Typical use cases
  • General chat assistants
  • Vision tasks
  • Complex agentic workflows
  • Structured output generation

Benchmarks

vs. best public score
MMLU91%
Multitask academic knowledge across 57 subjects.
Graduate-level science questions, "Google-proof".
MATH95%
High-school competition math problems.
Python function synthesis from docstrings.
Real GitHub issues solved end-to-end.
LMArena Elo1399 Elo
Crowd-sourced head-to-head preference Elo rating.
Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources, treat as directional rather than authoritative.

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Frequently asked questions

How much does GPT-5 cost?

GPT-5 costs $1.250 per million input tokens and $10.000 per million output tokens, for a blended reference rate of $3.875 per million tokens.

What is GPT-5's context window?

GPT-5 supports up to 400,000 tokens of context in a single request.

What is GPT-5 best for?

GPT-5 is well suited to Unified reasoning + chat, 400K context and Native vision.

Who makes GPT-5?

GPT-5 is developed and served by OpenAI. It was released in 2025.

Compared with

Terms used on this page