GPT-5.3 Codex (Xhigh)

Name: GPT-5.3 Codex (Xhigh)
Brand: OpenAI

GPT-5.3 Codex (Xhigh) is developed by OpenAI, released 2026-02-05.

Also written as: GPT 5.3 Codex (Xhigh)

Input price

$1.75 / 1M tok

Output price

$14.00 / 1M tok

Blended price

$4.813 / 1M tok

Intelligence

32.5

90th percentile of 554 models with an Intelligence score

Coding

—

Math

—

Speed

80 tok/s

Time to first token

42.47s

Third-party resale listings

Captured 2026-10-20 from the reseller marketplace subrouter.ai's public pricing list. These are third-party resale prices, not OpenAI's official price. Many resellers use shared/subscription access or reverse-engineered integrations — availability and quality are not verified by this site. Prices are USD per 1M tokens. Reseller names are the marketplace's own listing IDs, not company names — none of them is OpenAI or any other model developer.

1 reseller passed our sanity checks against OpenAI's official price; cheapest trusted price $2.8875/1M blended.

Reseller (marketplace ID)	Input $/1M	Output $/1M	Blended $/1M	vs. official
xcgx	1.05	8.40	2.8875	60%

Resale listings: subrouter.ai public marketplace snapshot 2026-10-20.

Official pricing from OpenAI. See the third-party resale listings above for reseller prices — those are not official and not verified by this site.

See all of OpenAI's models on its provider page, or browse the full model directory.