Moonshot AI released Kimi K3 on July 16-17, 2026, a 2.8 trillion parameter open-weight model that matches Anthropic's...

Moonshot AI released Kimi K3 on July 16-17, 2026, a 2.8 trillion parameter open-weight model that matches Anthropic's Opus 4.8 on benchmarks while being offered at Sonnet 5 pricing (Source 1: Latent Space). Multiple outlets report it as the world's largest open-source model and a significant step in closing the gap between open and proprietary AI (Source 2: Pandaily; Source 5: Digitimes). The launch was featured on Product Hunt (Source 4: Product Hunt) and garnered international coverage from Bloomberg and Axios (Source 6: Bloomberg; Source 8: Axios). Alibaba-backed Moonshot's release signals a new wave of competitive pressure on proprietary frontier model providers (Source 7: Seeking Alpha). This is a clear positive for Moonshot, establishing them as a leading open-source AI player and potentially driving increased inference compute demand across the AI infrastructure ecosystem. What the sources said:

• Source 1: "a great week for open models continues."
• Source 4: "The world's first open 3T-class model."
• Source 5: "Moonshot's free Kimi K3 matches Anthropic's Opus 4.8, closing the gap between open and proprietary AI."
• Source 8: "China's open-weight Kimi model stuns AI world with frontier-level results."