GLM 5.3 Flash vs Ternary Bonsai 2.9 B: cost comparison
Prices updated 2026-11-05 · computed from live provider data
Short answer: Ternary Bonsai 2.9 B is cheaper on a
3:1 input/output blend — $0.092 per million tokens versus
$0.119, a 22% difference.
GLM 5.3 Flash offers the larger context window at 1,048,576 tokens, against 262,144 for Ternary Bonsai 2.9 B.
Head to head
| GLM 5.3 Flash | Ternary Bonsai 2.9 B | |
|---|---|---|
| Input, per 1M tokens | $0.075 | $0.080 |
| Output, per 1M tokens | $0.250 | $0.130 |
| Blended 3:1, per 1M | $0.119 | $0.092 |
| Context window | 1,048,576 | 262,144 |
| Vendor | empiriolabs | prism-ml |
Monthly cost at real volumes
| Workload (input / output) | GLM 5.3 Flash | Ternary Bonsai 2.9 B |
|---|---|---|
| 1M in / 250K out | $0.138 | $0.113 |
| 10M in / 2.5M out | $1.38 | $1.12 |
| 100M in / 25M out | $13.75 | $11.25 |
Which should you pick?
Pick GLM 5.3 Flash when you need the longer context window (1,048,576 vs 262,144 tokens). Pick Ternary Bonsai 2.9 B when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.