name = "GPT-5 Chat (latest)" description = "Chat-tuned GPT model for conversational assistance, writing, and tool workflows" family = "gpt-codex" release_date = "2025-08-07" last_updated = "2025-08-07" attachment = true reasoning = true temperature = true tool_call = false structured_output = true knowledge = "2024-09-30" open_weights = false [limit] context = 400_000 input = 272_000 output = 128_000 [modalities] input = ["text", "image"] output = ["text"]