The world just got its larget open weight AI system in competition to US giant Anthropic frontier fable model. Chinese AI start up Moonshot launched Kimik K3, a 2.8 trillion parameter model.
Kimik K 3 comes at a time when Anthropics Fable and Mythos models were abruptly taken down by the US. A month ago the Trump administration had banned the models citing security reasons. Companies like Moonshot, Z.ai and MiniMax are quickly narrowing the gap created due to the withdrawal by launching powerful models at sharply lower cost and busting long held asumptions in the West that Chinese developers trail the American giants.
“Kimi K3 is the first open-weight model to approach the 3 trillion-parameter mark and is designed for advanced reasoning, long-horizon coding and knowledge work. The model features a 1 million-token context window, allowing it to process and retain substantially more information than earlier generations in a single prompt,” said Moonshot during the launch.
Kimi K3 “performed competitively with Fable 5 (with fallback) and substantially outperformed (OpenAI’s) Opus 4.8, GPT 5.6 Sol, and GPT 5.5” in terms of GPU kernel optimisation, it added.
AI analysing platforms like Arena.ai ranked Kimi K3 first benchmark assessing web interface-building capabilities, while Vals AI placed it second overall behind Fable 5 and ahead of GPT-5.6 Sol. Artificial Analysis said the model delivered performance comparable to OpenAI’s GPT-5.5 and Anthropic’s Claude Opus 4.8, particularly on tests measuring complex, multi-step tasks.
China has accelerated their efforts in the AI industry. Earlier, Z.ai’s GLM-5.2, stunned industry observers by scoring near top U.S. closed-source models on benchmark tests, undermining a consensus among Western analysts that Chinese AI models were at least six months behind.
Besides, Hongkong is also in the race. It is developing its own 2.7-trillion parameter model to be released as soon as the third quarter of 2026, and plans to launch its frontier-level multimodal model H3 in the near future,as per reports.