DeepSeek: DeepSeek V4.1 Flash (batch) vs Z.ai: GLM 5.3 Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| DeepSeek: DeepSeek V4.1 Flash (batch) | Z.ai: GLM 5.3 Flash | |
|---|---|---|
| Vendor | deepseek | z-ai |
| Quality Score | 100 | 100 |
| Input Price | $0.01/M | $0.03/M |
| Output Price | $0.20/M | $0.08/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 943,718 | 131,072 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GLM 5.3 Flash costs $0.054 and DeepSeek V4.1 Flash (batch) costs $0.061, so GLM 5.3 Flash is slightly cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Only GLM 5.3 Flash offers video input.
Across the 1 tasks where they differ, GLM 5.3 Flash on 1 (Bulk Data Labeling).
DeepSeek V4.1 Flash (batch) was released in September 2026 and GLM 5.3 Flash in August 2026.
Pick GLM 5.3 Flash if you need lower cost or video input.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | DeepSeek: DeepSeek V4.1 Flash (batch) | Z.ai: GLM 5.3 Flash |
|---|---|---|
| Bulk Data Labeling | 129 | 130 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →