GLM 5.3 Flashx vs GLM 5.3 Flashx Legal: cost comparison
Prices updated 2026-11-02 · computed from live provider data
Short answer: GLM 5.3 Flashx Legal is cheaper on a
3:1 input/output blend — $0.590 per million tokens versus
$0.590, a 0% difference.
Both offer the same 1,048,576-token context window, so cost is the deciding factor.
Head to head
| GLM 5.3 Flashx | GLM 5.3 Flashx Legal | |
|---|---|---|
| Input, per 1M tokens | $0.370 | $0.370 |
| Output, per 1M tokens | $1.25 | $1.25 |
| Blended 3:1, per 1M | $0.590 | $0.590 |
| Context window | 1,048,576 | 1,048,576 |
| Vendor | z-ai | z-ai |
Monthly cost at real volumes
| Workload (input / output) | GLM 5.3 Flashx | GLM 5.3 Flashx Legal |
|---|---|---|
| 1M in / 250K out | $0.682 | $0.682 |
| 10M in / 2.5M out | $6.83 | $6.83 |
| 100M in / 25M out | $68.25 | $68.25 |
Which should you pick?
Because the context windows are identical, the cheaper option is the better default. Choose GLM 5.3 Flashx Legal unless you are already standardised on z-ai tooling and want to avoid a second integration.