Google: Gemini 4 Carbon (batch) vs Z.ai: GLM 5.3 FlashX Legal

For a sample job of 1 million input tokens and 250,000 output tokens, GLM 5.3 FlashX Legal costs $0.68 and Gemini 4 Carbon (batch) costs $2.25, so GLM 5.3 FlashX Legal is about 3.3 times cheaper for the same work.

Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.

Only Gemini 4 Carbon (batch) offers audio input.

Across the 20 tasks where they differ, Gemini 4 Carbon (batch) scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), GLM 5.3 FlashX Legal on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).

Pick Gemini 4 Carbon (batch) if you need audio input or the stronger all-round task scores; pick GLM 5.3 FlashX Legal 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.