Seed 1.6 Flash vs GLM 5.3 Flash: cost comparison
Prices updated 2026-11-11 · computed from live provider data
Short answer: GLM 5.3 Flash is cheaper on a
3:1 input/output blend — $0.119 per million tokens versus
$0.131, a 10% difference.
GLM 5.3 Flash offers the larger context window at 1,048,576 tokens, against 262,144 for Seed 1.6 Flash.
Head to head
| Seed 1.6 Flash | GLM 5.3 Flash | |
|---|---|---|
| Input, per 1M tokens | $0.075 | $0.075 |
| Output, per 1M tokens | $0.300 | $0.250 |
| Blended 3:1, per 1M | $0.131 | $0.119 |
| Context window | 262,144 | 1,048,576 |
| Vendor | bytedance-seed | empiriolabs |
Monthly cost at real volumes
| Workload (input / output) | Seed 1.6 Flash | GLM 5.3 Flash |
|---|---|---|
| 1M in / 250K out | $0.150 | $0.138 |
| 10M in / 2.5M out | $1.50 | $1.38 |
| 100M in / 25M out | $15.00 | $13.75 |
Which should you pick?
Pick GLM 5.3 Flash when you need the longer context window (1,048,576 vs 262,144 tokens). Pick GLM 5.3 Flash when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.