Model card

KAT Coder Pro

sdn-kat-coder-proEveryday codingLive in the catalog

A coding-focused model from Kuaishou's Kwaipilot team: it skips the visible deliberation and just writes, which keeps output length predictable and edit loops quick. A solid extra pair of hands for routine implementation work at an everyday price.

Context window256K tokens

Input · per Mtok$0.3

Output · per Mtok$1.2

Served bySideren engine

Where it earns its keep[01/03]

01Direct code output — no hidden reasoning tokens
02256K context for large files and repos
03Priced for high-volume edit loops

Capabilities

Tool callingYes

Strict, schema-faithful tool calls, enforced by the engine on every request — safe to build an agent loop on.

ReasoningNo

No hidden chain-of-thought: output length stays predictable, latency stays tight.

VisionNo

Text-only.

Behind the endpoint[02/03]

One endpoint. Served by our engine.

KAT Coder Pro is served through the Sideren engine — zero-downtime serving is the design target, not a status-page apology. You request it by name; everything else is our problem.

Call it by name

curl https://api.sideren.io/v1/messages \
  -H "x-api-key: sdn_your_key" \
  -H "content-type: application/json" \
  -d '{
    "model": "sdn-kat-coder-pro",
    "max_tokens": 1024,
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

OpenAI-style clients work too — send the same model name to /v1/chat/completions with a Bearer key. See the docs for both dialects.

Your agent doesn't change.
Everything underneath does.

$export ANTHROPIC_BASE_URL=https://api.sideren.io

Get a key Read the docs

Start free · no card · Starter from $5/mo

One endpoint. Served by our engine.

Your agent doesn't change.Everything underneath does.

Your agent doesn't change.
Everything underneath does.