Kimi is launching K3, a multimodal model with 2.8 trillion parameters and a context window of one million tokens. In the company's own benchmarks, it performs on par with leading proprietary models.
According to Kimi, the new flagship model K3 has 2.8 trillion total parameters, processes images and video natively, and supports a context window of one million tokens. Kimi calls K3 the first open model in the roughly 3 trillion parameter range. Full model weights are scheduled for release by July 27. The model targets long-running programming tasks, knowledge work, and complex reasoning.
In Kimi's own benchmarks, K3 still trails the top proprietary models Claude Fable 5 and GPT 5.6 Sol but beats every other system tested, including the Claude Opus models and Chinese rival GLM-5.2. All results come from Kimi and were achieved at maximum or high thinking intensity, according to the company.
Kimi K3 wins two out of six programming benchmarks and finishes second or third in the rest. | Image: Kimi
Among general agents, Kimi K3 wins three out of six tests. Fable 5 takes the top spot in both visual agent tests. | Image: Kimi
