name = "OpenAI: GPT-5.3-Codex"
description = "Coding-optimized GPT model for repository edits, reviews, and agentic software work"
release_date = "2026-02-25"
last_updated = "2026-03-15"
attachment = true
reasoning_options = [{ type = "effort", values = ["low", "medium", "high", "xhigh"] }]
reasoning = true
tool_call = true
open_weights = false

[cost]
input = 1.75
output = 14

[limit]
context = 400000
output = 128000

[modalities]
input = ["image", "text"]
output = ["text"]