models.rip · model

Claude 2.1

2023–2025 · Lived 1 year, 7 months

It doubled the window to two hundred thousand tokens, and within a fortnight someone had hidden a single sentence in the middle of one and published what came back. Anthropic replied with a post showing that adding one line — "Here is the most relevant sentence in the context:" — moved recall from 27% to 98%. The headline was the window; the durable lesson was about how you ask.