Google: Gemini 3.8 Flash vs Z.ai: GLM 5.3 Flash
google vs z-ai
On price, Z.ai: GLM 5.3 Flash is cheaper (blended cost is about 0.14× that of Google: Gemini 3.8 Flash).
On capability, Google: Gemini 3.8 Flash has the higher intelligence index (31) — better for complex reasoning.
Verdict: pick Z.ai: GLM 5.3 Flash on a budget, or Google: Gemini 3.8 Flash for output quality. Full details below.
Side-by-Side Specs
| Metric | Google: Gemini 3.8 Flash | Z.ai: GLM 5.3 Flash |
|---|---|---|
| Input /1M | $0.82 | $0.15 |
| Output /1M | $4.13 | $0.50 |
| Blended (3:1) | $1.65 | $0.24 |
| Context | 1.0M | 1.0M |
| Intelligence | 31 | 28 |
| Coding | 76 | 72 |
| Math | — | — |
| Speed | 121 tok/s | 56 tok/s |
| CPS Grade | A | A |
FAQ
Which is cheaper, Google: Gemini 3.8 Flash or Z.ai: GLM 5.3 Flash?
On price, Z.ai: GLM 5.3 Flash is cheaper (blended cost is about 0.14× that of Google: Gemini 3.8 Flash). Google: Gemini 3.8 Flash: $0.825 in / $4.125 out; Z.ai: GLM 5.3 Flash: $0.15 in / $0.5 out (per 1M tokens).
Which is smarter, Google: Gemini 3.8 Flash or Z.ai: GLM 5.3 Flash?
On capability, Google: Gemini 3.8 Flash has the higher intelligence index (31) — better for complex reasoning. Coding index: Google: Gemini 3.8 Flash 76 vs Z.ai: GLM 5.3 Flash 72.
Which one should I choose?
Verdict: pick Z.ai: GLM 5.3 Flash on a budget, or Google: Gemini 3.8 Flash for output quality. Full details below.