Kimi K2.5 Is Live on Fireworks with Full-Parameter RL tuning. Try It Today.

Model Library
/Moonshot AI/Kimi K2.5
fireworks/kimi-k2p5

    Kimi K2.5 is Moonshot AI's flagship agentic model and a new SOTA open model. It unifies vision and text, thinking and non-thinking modes, and single-agent and multi-agent execution into one model. Pricing: 0.60 usd/1M (Uncached input); 0.30 usd/1M (Cached input); 2.50 usd/1M (Output)

    Kimi K2.5 API Features

    Fine-tuning

    Docs

    Kimi K2.5 can be customized with your data to improve responses. Fireworks uses LoRA to efficiently train and deploy your personalized model

    Serverless

    Docs

    Immediately run model on pre-configured GPUs and pay-per-token

    On-demand Deployment

    Docs

    On-demand deployments give you dedicated GPUs for Kimi K2.5 using Fireworks' reliable, high-performance system with no rate limits.

    Available Serverless

    Run queries immediately, pay only for usage

    $1.20 / $1.20
    Per 1M Tokens (input/output)

    Metadata

    State
    Ready
    Created on
    1/27/2026
    Kind
    Base model
    Provider
    Moonshot AI
    Hugging Face
    Kimi-K2.5

    Specification

    Calibrated
    Yes
    Mixture-of-Experts
    Yes
    Parameters
    1T

    Supported Functionality

    Fine-tuning
    Supported
    Serverless
    Supported
    Context Length
    262.1k tokens
    Function Calling
    Supported
    Embeddings
    Not supported
    Rerankers
    Not supported
    Support image input
    Supported