Moonshot AI is reportedly preparing to launch Kimi K3, a massive open-weight model with up to 3 trillion parameters meant to rival Anthropic’s Opus 4.8. The Chinese lab is also raising capital at a $31.5 billion valuation as enterprises increasingly weigh open-weight alternatives against pricey closed models.
Anthropic just launched Claude Tag, bringing Claude directly into Slack channels as an autonomous team collaborator. Powered by Opus 4.8, it remembers channel context, tackles multi-step projects asynchronously over hours or days, and proactively flags updates. Anthropic says 65% of its internal product code is already written by Claude Tag, now available in beta for Enterprise and Team tiers.
Microsoft just launched Copilot Cowork into general availability worldwide, taking enterprise automation beyond chat. It independently executes long-running, multi-tool tasks to completion and runs on Anthropic’s Opus 4.8 and Sonnet 4.6 models. It requires a Microsoft 365 Copilot subscription, billed via usage-based Copilot Credits.
Anthropic just changed course after facing heavy backlash for silently downgrading user requests on its newly released Fable 5 model. Starting this week, prompts flagged for advanced AI development or national security concerns will visibly fall back to Opus 4.8, and the API will return an explicit reason. Anthropic apologized for getting the balance wrong, though it reaffirmed its stance against helping foreign adversaries or building rival models.
