Kwaipilot API

Add AI code generation to your application with Kwaipilot.
Access Kwaipilot through a single API with Puter.js.

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AI Coding API

Top-Tier Coding Benchmark Performance

Achieved 73.4% solve rate on the SWE-Bench Verified benchmark, outperforming leading models including GPT-5 and Claude Sonnet 4 in code-related tasks.

Large Context Window

Massive 256,000-token context window, allowing you to work with entire codebases rather than isolated snippets.

Agentic Coding Capabilities

Functions as an autonomous AI engineer capable of planning, executing, and iterating on complete software engineering workflows with minimal intervention.

Versatile Task Support

Excels at 8 core task types: feature implementation, bug fixing, code refactoring, test generation, code review, documentation, deployment configuration, and interactive debugging.

Strong Multi-Turn Interaction

Excels in multi-turn interaction, understanding context across long conversations and turning vague requirements into precise code.

Wide Language & Domain Coverage

Trained across 8 programming domains including ML/AI, web development (UI/UX), databases, security, systems programming, and more.

Kwaipilot Models

Access Kwaipilot Kat Coder through a single API.

Kat Coder Pro

Top-tier coding model with 73.4% SWE-Bench score, 256K context, and agentic coding capabilities.

kwaipilot/kat-coder-pro

Kat Coder Pro (Free)

Top-tier coding model with 73.4% SWE-Bench score, 256K context, and agentic coding capabilities.

kwaipilot/kat-coder-pro:free

Add AI Code Generation in Seconds

Add Kwaipilot to your app with just a few lines of code.
No API keys, no backend, no configuration required.

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.chat("Write a Python function to calculate Fibonacci numbers", {
            model: "kwaipilot/kat-coder-pro"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

View full documentation →

Related Resources

Learn how to use Kwaipilot and other AI models with Puter.js.