The Kimi Series models are built by Moonshot AI, an Alibaba-backed company founded by Zhilin Yang. They are known for pioneering open agentic intelligence with state-of-the-art performance in coding, multimodal intelligence, and multi-turn agents. Kimi K3 is their most capable model to-date, released as an open-weights, 2.8 trillion parameter model on July 27th. Kimi K3 is available on all serverless tiers for devs to start building with on Fireworks today.

Explore the latest models from Moonshot AI, including the Kimi K2.7, K2.6, and the full Kimi K2 Thinking family. Enjoy state-of-the-art performance in complex agents, coding, and document intelligence.
Open models like the Kimi series now deliver production-grade quality while drastically cutting costs. The true competitive advantage belongs to teams that can rapidly adopt these new capabilities and run them reliably, efficiently, and at scale.

1/10th the Cost of Closed Models: Migrate from expensive closed-source models while keeping output quality and speed high.
Genspark leveraged Fireworks’ Reinforcement Fine-Tuning to outperform state-of-the-art closed-source models in just one month. By training Kimi, they achieved 12% better quality and a 33% increase in tool calls, all while slashing operational costs by 50%. This shift has enabled Genspark to deliver superior, cost-effective AI agents for deep research, documents, and complex web applications.

50%
Cost Reduction