GPT-5.3 codex

OpenAI400K context

As of Oct 14, 2026, GPT-5.3 codex costs $1.75 per million input tokens and $14.00 per million output tokens from OpenAI. None of its 4 sellers is cheaper than OpenAI.

Official price from OpenAI

Pricing page

Per million tokens

Input: $1.75
Output: $14.00
Cached input: $0.175
Batch input / output: —

Up to 128K output tokens per request.

Estimate your monthly cost

Input per month

M tokens

Output per month

M tokens

Input served from cache

Est. per month = input tokens × input price + output tokens × output price. Prices are per million tokens, so 10M input tokens at $3.00 cost $30.

From OpenAI: $45.50 a month.

Where to buy it (4)

Sorted by your monthly estimate. Prices per million tokens.

Seller	Input	Output	Cached input	Context	Est. per month10M in · 2M out
AIHubMix aihubmix/gpt-5.3-codex	$1.75	$14.00	$0.175	400K	$45.50
Azure OpenAI gpt-5.3-codex	$1.75	$14.00	$0.175	400K	$45.50
OpenAIOfficial gpt-5.3-codex	$1.75	$14.00	$0.175	400K	$45.50
OpenRouter openai/gpt-5.3-codex	$1.75	$14.00	$0.175	400K	$45.50

AIHubMix
Input / output
$1.75 / $14.00
Context
400K
Per month
$45.50
aihubmix/gpt-5.3-codex
Azure OpenAI
Input / output
$1.75 / $14.00
Context
400K
Per month
$45.50
gpt-5.3-codex
OpenAIOfficial
Input / output
$1.75 / $14.00
Context
400K
Per month
$45.50
gpt-5.3-codex
OpenRouter
Input / output
$1.75 / $14.00
Context
400K
Per month
$45.50
openai/gpt-5.3-codex

Cloud and hosted sellers may add regional pricing, minimums or platform fees. Supports: Vision, Reasoning, Tool calling.

Official price from OpenAI

Estimate your monthly cost

Where to buy it (4)

Similar models