name = "Gemini 3.1 Pro Preview" description = "Reasoning-first Gemini preview for agentic coding and complex problem solving" family = "gemini-pro" release_date = "2026-02-19" last_updated = "2026-02-19" attachment = true reasoning = true temperature = true tool_call = true structured_output = true knowledge = "2025-01" open_weights = false [[reasoning_options]] type = "effort" values = ["low", "medium", "high"] [cost] input = 2.00 output = 12.00 cache_read = 0.20 [[cost.tiers]] tier = { size = 200_000 } input = 4.00 output = 18.00 cache_read = 0.40 [limit] context = 1_048_576 output = 65_536 [modalities] input = ["text", "image", "video", "audio", "pdf"] output = ["text"]