Home › Compare › Z.ai: GLM 5.3 vs Z.ai: GLM 5.3 Flash
Z.ai: GLM 5.3 vs Z.ai: GLM 5.3 Flash: API Pricing Compared
Comparing Z.ai: GLM 5.3 and Z.ai: GLM 5.3 Flash: on combined input+output list price, Z.ai: GLM 5.3 Flash is cheaper at $0.65 vs $2.9 per 1M tokens — a difference of $2.25 (78%). Z.ai: GLM 5.3 costs $0.7 in / $2.2 out with a 1,048,576-token context; Z.ai: GLM 5.3 Flash costs $0.15 in / $0.5 out with a 1,048,576-token context.
| Z.ai: GLM 5.3 | Z.ai: GLM 5.3 Flash | |
|---|---|---|
| Input /1M | $0.7 | $0.15 |
| Output /1M | $2.2 | $0.5 |
| Cached input /1M | $0.13 | $0.03 |
| Context window | 1,048,576 | 1,048,576 |
| Max output tokens | 262,144 | 943,717 |
| Cost @ 10M in + 2M out / mo | $11.4 | $2.5 |
Estimate your own workload in the cost calculator, or open the full pages for Z.ai: GLM 5.3 and Z.ai: GLM 5.3 Flash.
Frequently asked questions
Which is cheaper, Z.ai: GLM 5.3 or Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 Flash is cheaper on combined list price: $0.65 vs $2.9 per 1M tokens (input + output). At 10M input + 2M output tokens per month, Z.ai: GLM 5.3 costs $11.4 and Z.ai: GLM 5.3 Flash costs $2.5.
Which has the larger context window, Z.ai: GLM 5.3 or Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 has a context window of 1,048,576 tokens; Z.ai: GLM 5.3 Flash has 1,048,576 tokens. The larger one is Z.ai: GLM 5.3.
Price snapshot October 22, 2026, refreshed daily.