~z-ai/glm-flash-latest vs z-ai/glm-5.3
For 100,000 calls of 2,000 in and 500 out, ~z-ai/glm-flash-latest is cheaper: $9.70 a month at OpenRouter, against $83.98 for z-ai/glm-5.3 at OpenRouter — 8.7× the cost.
Cheapest on each
~z-ai/glm-flash-latest
$9.70/mo
cheapest, at OpenRouter — $0.0285 in, $0.08 out per million
z-ai/glm-5.3
$83.98/mo
cheapest, at OpenRouter — $0.0699 in, $1.4 out per million
Aligned facts
Same rows on both sides, including the ones we cannot fill.
| Attribute | ~z-ai/glm-flash-latest | z-ai/glm-5.3 |
|---|---|---|
| Context window | 1M | 1M |
| Accepts | Aa · IMG · VID | Aa |
| Sellers | 1 | 7 |
| Cheapest input rate | $0.0285 / M | $0.0699 / M |
| Cached input rate | $0.0285 / M | $0.0689 / M |
No quality or benchmark row appears here. We hold no throughput or accuracy measurement for either model, and a cost-per-quality figure built from a lab’s own claim would look authoritative and mean nothing.
Cost for this workload — both models, every seller
100,000 calls a month · 2,000 input and 500 output tokens each. Sellers of both models lead, cheapest combined cost first.
| Seller | ~z-ai/glm-flash-latest /mo | z-ai/glm-5.3 /mo |
|---|---|---|
| OpenRouter | $9.702026-10-27 | $83.982026-10-27 |
| SambaNova | ○ no answer | $500.002026-10-22 |
| Baseten | ○ no answer | $500.002026-10-22 |
| Novita AI | ○ no answer | $500.002026-10-22 |
| Together AI | ○ no answer | $500.002026-10-27 |
| Fireworks AI | ○ no answer | $500.002026-10-22 |
| FriendliAI | ○ no answer | $500.002026-10-21 |
Cheapest tier per seller, this workload only. In and output rates, and a cached prefix, are broken out in the cost calculator.