DeepSeek V4 Pro 0423 vs GPT-5.6 Terra: side-by-side summary

DeepSeek V4 Pro 0423 and GPT-5.6 Terra are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

DeepSeek V4 Pro 0423, from DeepSeek, has a 1,048,576-token context window and is priced at $0.7903/M tokens input, $1.581/M tokens output on OpenRouter.

GPT-5.6 Terra, 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

• DeepSeek V4 Pro 0423: 1,048,576 tokens
• GPT-5.6 Terra: 1,050,000 tokens

Price

• DeepSeek V4 Pro 0423: $0.7903/M tokens input, $1.581/M tokens output
• GPT-5.6 Terra: $2/M tokens input, $12/M tokens output

Provided by

• DeepSeek V4 Pro 0423: DeepSeek
• GPT-5.6 Terra: OpenAI

• DeepSeek V4 Pro 0423 model details, providers and pricing
• GPT-5.6 Terra model details, providers and pricing