Gemini 3 Flash Preview vs GLM 5.3 Flash
Gemini 3 Flash Preview 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
- GLM 5.3 Flash is 4.7× cheaper than Gemini 3 Flash Preview 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 has openly published weights you can run yourself.
- Choose GLM 5.3 Flash if cost matters most; choose Gemini 3 Flash Preview if you need its specific strengths above. For the best results, test both on your own prompts.
| Gemini 3 Flash Preview | GLM 5.3 Flash | |
|---|---|---|
| Company | Google DeepMind | Z.ai (Zhipu) |
| Released | Dec 17, 2025 | Aug 26, 2026 ● |
| Overall index | 151.8 | 151.9 ● |
| SWE-bench Verified | 75.4% | — |
| GPQA Diamond | 89.4% | 90.2% ● |
| AIME math | 95.6% ● | 93.9% |
| FrontierMath | 51.2% | 55.8% ● |
| SimpleQA Verified | 66.8% | — |
| Input (per 1M tokens) | $0.50 | $0.15 ● |
| Output (per 1M tokens) | $3 | $0.50 ● |
| Cost for 1M input + 1M output tokens | $3.50 | $0.65 ● |
| Providers | 6 | 33 ● |
| Context | 1M | 1M |
| Max output | 64K | 944K ● |
| Inputs | Text, Image, Files, Audio, Video ● | Text, Image, Video |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |
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