name = "Grok 4.20 (Reasoning)" description = "Reasoning Grok for document-heavy analysis and long-horizon tool use" family = "grok" release_date = "2026-03-09" last_updated = "2026-03-09" attachment = true reasoning = true reasoning_options = [] temperature = true tool_call = true structured_output = true open_weights = false [cost] input = 1.25 output = 2.5 cache_read = 0.2 [[cost.tiers]] tier = { size = 200_000 } input = 2.5 output = 5 cache_read = 0.4 [limit] context = 1_000_000 output = 30_000 [modalities] input = ["text", "image", "pdf"] output = ["text"]