GptClosed Weights

GPT-5.3 Codex XHigh

gpt-5.3-codex-xhigh

Best Input Price

$1.75 / 1M

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Context Window

400,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2026-02-05

Inference Providers (1)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
Abacus	gpt-5.3-codex-xhigh	400,000	$1.75	$14.00	Docs ↗