name = "GPT-5.2 Codex" description = "Code-specialist GPT for repository edits, reviews, and long-running software agents" family = "gpt-codex" release_date = "2025-12-11" last_updated = "2025-12-11" attachment = true reasoning = true reasoning_options = [{ type = "effort", values = ["low", "medium", "high", "xhigh"] }] temperature = false knowledge = "2025-08-31" tool_call = true structured_output = true open_weights = false [cost] input = 1.75 output = 14.00 cache_read = 0.175 [limit] context = 400_000 input = 272_000 output = 128_000 [modalities] input = ["text", "image", "pdf"] output = ["text"]