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 reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "max"] }, { type = "budget_tokens" }] temperature = true knowledge = "2024-09-30" tool_call = false structured_output = true open_weights = false [cost] input = 1.25 output = 10.00 [limit] context = 400_000 output = 128_000 [modalities] input = ["text", "image"] output = ["text"]