name = "GPT 5.1 Thinking" description = "Image model for prompt-driven generation, editing, and visual design workflows" family = "gpt" release_date = "2025-11-12" last_updated = "2025-08-07" attachment = true reasoning = true reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high"] }] temperature = true tool_call = true knowledge = "2024-10" open_weights = false [cost] input = 1.25 output = 10 cache_read = 0.125 [limit] context = 400_000 input = 272_000 output = 128_000 [modalities] input = ["text", "image", "pdf"] output = ["text", "image"]