GLM-5.3 vs Kimi K3
Both are Flagship-tier models, from Z.ai and Moonshot AI respectively. GLM-5.3 is the cheaper choice overall at a 4:1 input:output ratio.
Which is cheaper
Side by side
| Spec | GLM-5.3 | Kimi K3 |
|---|---|---|
| Provider | Z.ai | Moonshot AI |
| Tier | Flagship | Flagship |
| Context window | 1M | 1.05M |
| Max output | 128K | — |
| Input $/1M | $1.40 | $3.00 |
| Output $/1M | $4.40 | $15.00 |
| Cache read $/1M | $0.26 | $0.30 |
| Modalities | text | text |
GLM-5.3. Latest flagship text model, per 1M tokens. Context window not stated on pricing page.
Kimi K3. input is cache-miss (standard) price per 1M tokens; cache_read is cache-hit price ($0.30).
Sources
GLM-5.3 — verified August 29, 2026