OpenAI: GPT-5 Pro

OpenAI: GPT-5 Pro is a large language model from OpenAI. It costs $15.00 per million input tokens and $120 per million output tokens. Its context window is 400K tokens.

ReasoningTool callingStructured outputBatch tierimage inputfile input

Input / 1M tokens: $15.00
Output / 1M tokens: $120
Cached input / 1M: -
Context window: 400K

This model also charges $0.01 per search request

That is $10.00 per 1,000 requests, billed on top of the token prices above. On a typical 1,000-in / 500-out exchange the tokens cost $0.075, so the search fee is 13% on top. Per-token rankings elsewhere ignore this entirely.

Who serves it cheapest

1 hosts serve GPT-5 Pro. Same weights, same API - the price difference is pure margin and routing.

Providers serving OpenAI: GPT-5 Pro, cheapest first
Provider	Input / 1M	Output / 1M	Context	Throughput	Uptime 24h
OpenAICheapest	$15.00	$120	400K	-	100.0%

About GPT-5 Pro

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...

Specifications

OpenAI: GPT-5 Pro specifications
Model ID	`openai/gpt-5-pro`
Provider	OpenAI
Context window	400K tokens
Max output	128K tokens
Input modalities	image, text, file
Output modalities	text
Knowledge cutoff	2024-09-30
Open weights	No
Released	October 6, 2025

Cheaper alternatives

Models that cost less than GPT-5 Pro while keeping at least half its context window and every input modality it supports.

o3 Pro

$20.00 in · $80.00 out

1.2× cheaper

Claude Opus 4.1

$15.00 in · $75.00 out

1.4× cheaper

Claude Opus 4

$15.00 in · $75.00 out

1.4× cheaper

$15.00 in · $60.00 out

1.6× cheaper

GPT-6 Astra

$10.00 in · $50.00 out

2.1× cheaper

Frequently asked

How much does OpenAI: GPT-5 Pro cost?

$15.00 per million input tokens and $120 per million output tokens.

What is the context window of OpenAI: GPT-5 Pro?

400K tokens, with up to 128K tokens of output per request.

Does OpenAI: GPT-5 Pro have extra fees beyond per-token pricing?

Yes. OpenAI: GPT-5 Pro charges $0.01 per search request - $10.00 per 1,000 requests - on top of $15.00 per million input tokens and $120 per million output tokens. On a typical 1,000-input / 500-output exchange the search fee alone is 13% on top.

Confirm against the source: OpenAI official pricing.