Chinese AI start-up Moonshot has launched the Kimi K3 large language model featuring one million context tokens. The model is built to take on Anthropic’s Opus 4.8 per competitive coding benchmarks reported in early tests. Benchmark leaks suggest Kimi K3 performance aims at Anthropic’s Claude Fable5 directly. Industry watchers say the release intensifies the AI competition between Chinese and Western developers. Moonshot positions the model as a step in narrowing the performance gap compared to leading global alternatives.