DeepSeek V4 Pro 0813 vs GPT-5.6 Terra Pro: side-by-side summary

DeepSeek V4 Pro 0813 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.

DeepSeek V4 Pro 0813, from DeepSeek, has a 1,048,576-token context window and is priced at $0.435/M tokens input, $0.87/M tokens output on OpenRouter.

GPT-5.6 Terra Pro, from OpenAI, has a 1,050,000-token context window and is priced at $1/M tokens input, $6/M tokens output on OpenRouter.

Context window

• DeepSeek V4 Pro 0813: 1,048,576 tokens
• GPT-5.6 Terra Pro: 1,050,000 tokens

Price

• DeepSeek V4 Pro 0813: $0.435/M tokens input, $0.87/M tokens output
• GPT-5.6 Terra Pro: $1/M tokens input, $6/M tokens output

Provided by

• DeepSeek V4 Pro 0813: DeepSeek
• GPT-5.6 Terra Pro: OpenAI

• DeepSeek V4 Pro 0813 model details, providers and pricing
• GPT-5.6 Terra Pro model details, providers and pricing