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Long-context Kimi models with tool calling for agentic apps

An API platform for building AI applications with Kimi’s K2.5/K2.6 models. It supports long context, tool calling, vision input, and autonomous agent workflows for developers.

Agenticness = how independently a tool can take action, scored across 9 dimensions. Scored independently by David Kooi, Skylark Creations — see full rubric →

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API
Vision
Code Execution
B2B
MCP Support
Supports Local Models
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Recent activity

What's happened with Kimi API Platform lately

  • Score change
    Rubric upgrade v3_0 → v3.1: score 12/32 → 11/361211/36(-1)

    Rubric upgrade: agenticness v3.0 (8 dims, /32) → v3.1 (9 dims, /36). Adds Dim 9 (Operator Sovereignty), splits Dim 6 into 6a/6b lenses, tightens Dim 4 autonomous-retry distinction. Not a product change — score shift reflects new dimension + recalibrated rubric, not a change in the tool. Fanout suppressed.

    See the news that prompted this

News mentions sourced from our news feed; score changes from periodic re-evaluations.

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About

What It Is

Kimi API Platform is a hosted LLM API service from Moonshot AI aimed at developers building AI products and agent workflows. The platform centers on Kimi’s newer K2.5 and K2.6 models, which are positioned for coding, dialogue, visual reasoning, and multi-step tool use.

What to Know

The strongest signal here is agent support: the documentation highlights tool calling, long-context usage, and “autonomous execution capabilities,” especially for programming and research-style workflows. That makes it a good fit if you need an...

Key Features
Provides API access to Kimi K2.5 and K2.6 models
Supports 256K long context on the platform description
Offers tool calling for multi-step workflows
Includes vision and text input support
Provides official tools such as Web Search, Memory, Fetch, Code-Runner, Quick JS, Excel, Date, Convert, and Base 64
Use Cases
Building coding agents that debug, refactor, and generate software
Creating research assistants that gather and synthesize information with tools
Adding long-context dialogue and reasoning to a product
Agenticness: Guided Assistant

Executes tasks you assign, one step at a time, within narrow domains.

High evidence
Last evaluated: May 23, 2026
This tool has strong action capabilities but limited safety controls. Use with appropriate oversight.

Dimension Breakdown

Action Capability
Autonomy
Adaptation
State & Memory
Safety

Categories

Pricing
  • Usage-based: K2.6 is listed at $0.16/MTok cache hit, $0.95/MTok input, and $4.00/MTok output. K2.5 is listed at $0.10/MTok cache hit, $0.60/MTok input, and $3.00/MTok output. K2 0905 is listed at $0.15/MTok cache hit, $0.60/MTok input, and $2.50/MTok output.
  • Free: No free tier was clearly shown in the captured content.
  • Enterprise: Not publicly detailed in the captured content.
Details
AddedApril 21, 2026
RefreshedApril 21, 2026
Agenticness
Quick Facts
DeploymentCloud-hosted
AutonomySemi-autonomous
Model supportSingle model
Open sourceNo
Team supportIndividual only
Pricing modelUsage-based
Interfaceweb, api
Sources
Last updated May 23, 2026

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