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Moonshot's Kimi K3 matches Anthropic's Fable, narrows China-U.S. AI gap

What happened: Chinese startup Moonshot AI released Kimi K3 on July 16, a 2.7 trillion-parameter open-weight model that the company claims performs competitively with Anthropic's Fable 5 and substantially outperforms Anthropic's Opus 4.8 and OpenAI's GPT 5.6 Sol and GPT 5.5, making it the largest open-weight language model available today.