Kimi K3 rivals OpenAI and Anthropic’s latest models across various benchmarks.
Moonshot is gearing up to make the world’s largest open-weight AI model available for public download, after initial interest overwhelmed the company’s systems.
The Chinese AI start-up is due to release the Kimi K3’s weights on Monday (27 June), enabling users to fine tune and run the model locally for free.
Moonshot unveiled K3 earlier this month, boasting 2.8trn parameters and performances closely rivalling that of OpenAI and Anthropic’s newest models. The multimodal model is designed for frontier intelligence across long-horizon coding, knowledge work and reasoning, according to its maker.
At the time of its launch, Kimi said that K3 performed “competitively” with Fable 5 and “substantially outperformed” Opus-4.8, GPT-5.6 Sol and GPT-5.5. Bloomberg reported that initial interest drove daily sales at Moonshot up sixfold since K3’s debut.
