name = "GPT-5.3-Codex"
description = "Coding-optimized GPT model for repository edits, reviews, and agentic software work"
release_date = "2026-02-10"
last_updated = "2026-02-10"
attachment = true
reasoning = true
reasoning_options = [{ type = "effort", values = ["low", "medium", "high", "xhigh"] }]
temperature = false
open_weights = false
tool_call = true

[cost]
input = 1.6
output = 13
cache_read = 0.16

[limit]
context = 400_000
output = 128_000

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