KAT-Coder-Air V2.5 vs GPT-5.6 Terra Pro: side-by-side summary

KAT-Coder-Air V2.5 and GPT-5.6 Terra Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

KAT-Coder-Air V2.5, from kwaipilot, has a 256,000-token context window and is priced at $0.15/M tokens input, $0.60/M tokens output on OpenRouter.

GPT-5.6 Terra Pro, from OpenAI, has a 1,050,000-token context window and is priced at $2/M tokens input, $12/M tokens output on OpenRouter.

Context window

• KAT-Coder-Air V2.5: 256,000 tokens
• GPT-5.6 Terra Pro: 1,050,000 tokens

Price

• KAT-Coder-Air V2.5: $0.15/M tokens input, $0.60/M tokens output
• GPT-5.6 Terra Pro: $2/M tokens input, $12/M tokens output

Provided by

• KAT-Coder-Air V2.5: kwaipilot
• GPT-5.6 Terra Pro: OpenAI

• KAT-Coder-Air V2.5 model details, providers and pricing
• GPT-5.6 Terra Pro model details, providers and pricing