DeepSeek: DeepSeek V4 Flash Vision Exp vs OpenAI: GPT-5.6 Terra (batch)

For a sample job of 1 million input tokens and 250,000 output tokens, DeepSeek V4 Flash Vision Exp costs $0.38 and GPT-5.6 Terra (batch) costs $2.50, so DeepSeek V4 Flash Vision Exp is about 6.6 times cheaper for the same work.

Both take in a similar amount of text: 1,048,576 and 1,050,000 tokens, about 1,573 and 1,575 pages.

On our blended benchmark score GPT-5.6 Terra (batch) leads 71.1 to 57.7.

Across the 20 tasks where they differ, DeepSeek V4 Flash Vision Exp scores higher on 7 (Code Completion, Code Documentation, Regex Writing and others), GPT-5.6 Terra (batch) on 13 (SQL Generation, Code Review, Code Refactoring and others).

DeepSeek V4 Flash Vision Exp was released in August 2026 and GPT-5.6 Terra (batch) in July 2026.

Pick DeepSeek V4 Flash Vision Exp if you need lower cost; pick GPT-5.6 Terra (batch) if you need benchmark performance.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.