Kwaipilot Releases KAT-Coder-Pro V2.5 with 256K Context Window

Kwaipilot has released KAT-Coder-Pro V2.5, a coding-focused language model with a 256,000-token context window. The model is priced at $0.74 per million input tokens and $2.96 per million output tokens.

The model is available exclusively through OpenRouter, which forwards requests directly to Kwaipilot without routing decisions. According to OpenRouter's data, prompt caching can reduce effective costs by 60-80% below list prices depending on the amount of repeated context.

Technical Specifications

• Context Window: 256,000 tokens
• Input Pricing: $0.74 per 1 million tokens
• Output Pricing: $2.96 per 1 million tokens
• Release Date: July 10, 2026
• Model Type: Text (coding-focused)
• API: OpenAI-compatible through OpenRouter

The model slug is kwaipilot/kat-coder-pro-v2.5 for API integration. OpenRouter provides monitoring data including throughput (tokens per second), latency, time-to-first-token (TTFT), and 30-day uptime metrics for the model.

Pricing Context

The output pricing of $2.96 per million tokens positions KAT-Coder-Pro V2.5 in the mid-range for coding models. The input cost of $0.74 per million tokens is competitive for models with 256K context windows.

OpenRouter's infrastructure automatically retries failed requests on alternative providers and tracks which applications send the most traffic to the model, providing signals about production workload patterns.

What This Means

The 256K context window allows developers to include substantial codebases or documentation in prompts without chunking. The pricing structure makes it viable for production coding assistance applications, though the 4:1 output-to-input price ratio means code generation workloads will cost significantly more than code analysis. The exclusive availability through OpenRouter rather than direct API access may limit adoption compared to models with multiple distribution channels.