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    kimi-k2.5

    moonshot/kimi-k2.5

    ChatVisionFilesToolsSystem prompt

    Context

    262K

    Max output

    262K

    Input / 1M

    $0.60

    Output / 1M

    $3.00

    Cached / 1M

    $0.10

    Cutoff

    —

    About this model

    Kimi K2.5 is Moonshot AI's multimodal model supporting text, image, and video input, with thinking and non-thinking modes, and both dialogue and agent tasks. Context length 256K with support for long thinking and deep reasoning. Supports automatic context caching, ToolCalls, JSON Mode, Partial Mode, and internet search.

    Best suited for

    • Long-context workflows up to 256K tokens with deep reasoning
    • Multimodal workflows (text + image + video inputs)
    • Agentic task execution and dialogue
    • Code generation, debugging, and refactoring
    • Tool-calling agents with JSON/structured outputs
    • Internet-search-augmented question answering

    Built-in tools

    Web searchGtwy web search

    Hosted by the gateway — enable them per request without wiring your own endpoint.

    Capabilities

    Vision

    Accepts images alongside text in the same message.

    Files

    Accepts file attachments — PDFs, transcripts, spreadsheets.

    Tools

    Native function calling, so agents can invoke your endpoints.

    System prompt

    Honours a dedicated system role, separate from the user turn.

    Supported parameters

    max_tokens

    The maximum number of tokens to generate for the chat completion. Maps to max_completion_tokens.

    tools

    Lists tool definitions or capabilities available to the model.

    tool_choice

    Decides whether to use tools or just the model for generating responses.

    response_type
    additional_stop_sequencesStop Sequences

    Up to 5 stop sequences that halt generation when fully matched. Maps to stop.

    stream

    Sends the response in real-time as it's being generated.