Google: Gemini 4 Carbon (batch) vs OpenAI: GPT-6.1 Terra (batch)

For a sample job of 1 million input tokens and 250,000 output tokens, GPT-6.1 Terra (batch) costs $1.12 and Gemini 4 Carbon (batch) costs $2.25, so GPT-6.1 Terra (batch) is about 2.0 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.

Only Gemini 4 Carbon (batch) offers audio input and video input.

On our blended benchmark score Gemini 4 Carbon (batch) leads 98.9 to 83.7.

Across the 20 tasks where they differ, Gemini 4 Carbon (batch) scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), GPT-6.1 Terra (batch) on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).

Gemini 4 Carbon (batch) was released in November 2026 and GPT-6.1 Terra (batch) in October 2026.

Pick Gemini 4 Carbon (batch) if you need audio input, video input, benchmark performance or the stronger all-round task scores; pick GPT-6.1 Terra (batch) if you need lower cost.

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