KAT-Coder-Pro V2
VerifiedClosed-source coding LLM with 256k token context.
About KAT-Coder-Pro V2
KAT-Coder-Pro V2 is a closed-source large language model developed by Kwaipilot. It processes text input and output exclusively and supports a context window of 256000 tokens. The model is positioned as a specialized coding assistant rather than a general-purpose chatbot.
Its primary strength lies in handling extended codebases and documentation within a single context. Because it is not open-weight, access occurs through Kwaipilot's managed service. This design suits teams that prefer managed infrastructure over self-hosted solutions.
Typical usage includes code generation, refactoring, and analysis of large repositories. Developers integrate it into IDEs or internal tools where long-context understanding improves accuracy on complex projects. The model remains unavailable for local deployment or weight inspection.
Capabilities
How KAT-Coder-Pro V2 compares
KAT-Coder-Pro V2 (striped bar) vs other language models on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · KAT-Coder-Pro V2 ranks #22 of 34
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Analyzing extensive code repositories
KAT-Coder-Pro V2 handles long-context code analysis across very large codebases thanks to its 256000-token window.
Executing large-scale code refactoring
The model supports advanced code generation and large-scale refactoring projects in complex software systems.
Iterative algorithm development
It delivers multi-turn programming assistance and algorithm design support for ongoing technical problem solving.
Strengths & limitations
Strengths
- +Strong handling of extensive code contexts
- +Professional-grade coding focus
- +Text-only efficiency for development workflows
Limitations
- –No vision or multimodal support
- –Performance depends on prompt quality
- –Limited to text-based inputs and outputs
Pricing by provider
Live per-provider pricing & uptime, routed via OpenRouter. Prices are USD per 1M tokens.
| Provider | Input /1M | Output /1M | Context | Uptime |
|---|---|---|---|---|
| StreamLake | $0.30 | $1.20 | 256K | 100.0% |
| AtlasCloud(fp8) | $0.30 | $1.20 | 262K | 100.0% |
Cost calculator
Estimate what KAT-Coder-Pro V2 would cost for your usage.
Based on KAT-Coder-Pro V2's $0.30/1M input · $1.20/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "kwaipilot/kat-coder-pro-v2",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: kwaipilot/kat-coder-pro-v2
Editor's verdict
KAT-Coder-Pro V2 is Kwaipilot's proprietary language models with a 256K-token context window.
At $1.20 per 1M output tokens, it is mid-priced for its class, served by 2 providers.
It is available through Kwaipilot's API and aggregators like OpenRouter.
Best suited to strong handling of extensive code contexts and professional-grade coding focus.
Frequently asked questions
The model supports a context window of 256000 tokens.
User reviews
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