Moonshot AI: Kimi K2 0905

Not supportedQuick start

Kimi K2 0905 is Moonshot AI's September 2025 update to Kimi K2 0711, a large-scale mixture-of-experts model with 1 trillion total parameters and 32 billion active per forward pass. It extends context to 262K tokens and improves agentic coding accuracy and generalization across scaffolds, with better frontend outputs for web and 3D tasks.

MirAPI doesn’t offer this model. The prices shown are the official list prices.

Modalities
inTextoutText
Price / 1M
$0.60 / $2.50
Context
262K
Released
Sep 4, 2025
Knowledge cutoff
Dec 31, 2024

Capabilities

Tool useLong contextStructured output

Parameters

Request parameters this model accepts through the API.

frequency_penaltymax_tokenspresence_penaltyrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_p

Benchmarks

bar = score (0–100) · ▏ median

Scores come from vendor reports and public leaderboards, not private evals.

Intelligence Index
General ability
15.3
#98
GPQA Diamond
Science QA
76.4
#87
τ-bench (airline)
Agentic tool use
59.2
#93

Showcase

Every chat model gets the same three fixed prompts. Outputs are archived verbatim, so you can copy a prompt and reproduce the result.

Task prompt · identical for all models
Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.
Archived output
Archive not published yet

Every model will run this exact prompt, and its output will appear here verbatim with token counts and the cost per run.

Quick start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="",
    messages=[{"role": "user", "content": "Hello"}],
)
Wire Kimi K2 0905 into your product

1M free tokens to start, no card required. It’s OpenAI-compatible, so you only change the base URL.

Start free