Kimi K2.5

Retired

A Moonshot AI model with a 256K-token context window, image input and tool calling. Released on the Kimi Open Platform API January 27, 2026, now retired.

Access details: Kimi Open Platform API

The model ID to use in API requests.

kimi-k2.5

Open weights on Hugging Face: moonshotai/Kimi-K2.5

Updated Oct 1, 2026

Sources & notes

Capabilities & limits

Context window: 256K
Maximum output: —
Image input: Supported
Tool calling: Supported
Structured output: Supported

Pricing

USD / 1M tokens

Input: No longer sold
Output: No longer sold

No longer sold on the Kimi Open Platform API.

Price history

Aug 31, 2026

Input No longer sold per million tokens

Aug 31, 2026

Output No longer sold per million tokens

Technical details

Parameters: 1T
Active parameters: 32B
Architecture: Mixture-of-Experts (MoE)
Input modalities: Text, image
Output modalities: Text

From Moonshot AI

Official announcement ↗

How they describe it

Kimi's most versatile model to date

What they say is new

builds on Kimi K2 with continued pretraining over approximately 15T mixed visual and text tokens

Release & lifecycle

First available: Jan 27, 2026
retired: Aug 31, 2026