DeepSeek V4 Flash 0731 vs GLM 5.3 Flash
DeepSeek V4 Flash 0731 vs GLM 5.3 Flash: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- DeepSeek V4 Flash 0731 is 2.5× cheaper than GLM 5.3 Flash for the same mix of input and output tokens.
- Both have the same context window.
- GLM 5.3 Flash is the more recent release (Aug 26, 2026).
- Only GLM 5.3 Flash accepts images as input.
- DeepSeek V4 Flash 0731 scores higher on independent tests (overall index 154.5 vs 151.9).
- DeepSeek V4 Flash 0731 is both cheaper and better rated: for most uses it is the better choice.
| DeepSeek V4 Flash 0731 | GLM 5.3 Flash | |
|---|---|---|
| Company | DeepSeek | Z.ai (Zhipu) |
| Released | Jul 31, 2026 | Aug 26, 2026 ● |
| Overall index | 154.5 ● | 151.9 |
| GPQA Diamond | 91.0% ● | 90.2% |
| AIME math | 94.4% ● | 93.9% |
| FrontierMath | 57.5% ● | 55.8% |
| SimpleQA Verified | 33.6% | — |
| Input (per 1M tokens) | $0.018 ● | $0.15 |
| Output (per 1M tokens) | $0.32 ● | $0.50 |
| Cost for 1M input + 1M output tokens | $0.338 ● | $0.65 |
| Providers | 30 | 33 ● |
| Context | 1M | 1M |
| Max output | 944K ● | 944K |
| Inputs | Text | Text, Image, Video ● |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | ✓ | ✓ |
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