CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins80% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Sources differ by a few days: the Hugging Face[1] repo's first public discussion is 2025-09-05 (files uploaded 3-4 September), OpenRouter[3] listed it late on 4 September UTC, KrASIA[6] reported on 5 September that Moonshot had "briefly announced" Kimi[2] K2-0905, and Wikipedia's[4] text says 9 September while citing 4 and 5 September sources.Moonshot AI releases Kimi K2-Instruct-0905, an update to its 1-trillion-parameter Kimi K2 that doubles the context window from 128K to 256K tokens and improves agentic coding and front-end output, with SWE-bench Verified at 69.2%.
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