GLM-5.3 vs Gemini 3.8 Flash
⚖ Gemini 3.8 Flash wins 3 of 4 categories and costs less: 1.4× cheaper for everyday text work. Easy pick.
Scores by category
| Category | GLM-5.3 | Gemini 3.8 Flash |
|---|---|---|
| Overall | 61 | 71 |
| Writing | 70 | 80 |
| Support | 67 | 78 |
| Coding | 68 | 66 |
Provisional scores, 0 to 100 among the models we track, from Arena and Epoch AI. Value weighs the overall score against cost.
Price and specs
| GLM-5.3 | Gemini 3.8 Flash | |
|---|---|---|
| Vendor | Z.ai | |
| Released | 2026-08-14 | 2026-09-02 |
| Context window | 1M | 1M |
| Open weights | Yes | No |
| Input per 1M tokens | $1.40 | $0.75 |
| Output per 1M tokens | $4.40 | $3.75 |
| Per 1,000 tasks | $4.30 | $3.00 |