FW-Kimi-K3.1-Pro
FireworksModels available for use with Fireworks on Foundry deliver optimized, best-in-class performance on the Fireworks Inference Cloud. Fireworks on Foundry is a Non-Microsoft Product. The following terms apply to a Customer's use of Fireworks on Foundry: When you use Fireworks on Foundry, data is shared between Microsoft and Fireworks AI, Customer Data will be sent outside of Microsoft systems, Customer Data will not be processed pursuant to any Foundry data residency documentation, and different compliance and data handling rules will apply. See Trust Center - Fireworks AI for details. Customers are responsible for evaluating whether data sharing between Microsoft and Fireworks is appropriate for their organization's compliance requirements.
About this model
Kimi K3.1 Pro is an open-weight, natively multimodal agentic model from Moonshot AI. It builds on Kimi K3 through joint reinforcement learning across a broad range of domains. The Fireworks-hosted model supports text and image inputs, text outputs, function calling, and a 1-million-token context window. Its Mixture-of-Experts architecture has 2.8T total parameters and 104B activated parameters.
Key model capabilities
- Coding and tool-assisted agentic workflows
- Visual reasoning over text and images
- Long-context research and factual information synthesis
- 3D creation and financial research workflows
- Reasoning with a 1-million-token context window
