GLM-5.3 Flash API price, and what each result really costs
Z.ai, listed 26 Aug 2026. Price checked 12 Nov 2026; unchanged since we started tracking it. Source: Z.ai's pricing page. z-ai/glm-5.3-flash
List price per million tokens
- Input
- $0.15
- Cached input
- $0.03
- Output
- $0.50
- Context window
- 1.05M tokens
What it costs per task, and per task that works
Six common task shapes with typical token counts. The real cost counts the tries that get redone; the rates are examples, not measurements.
| Task | Per 1,000 tries | Per 1,000 that work, 8 in 10 | Per 1,000 that work, 6 in 10 | Per 1,000 that work, 4 in 10 |
|---|---|---|---|---|
| Support bot answer3,000 in / 300 out | $0.60 | $0.75 | $1.00 | $1.50 |
| Invoice field extraction2,500 in / 250 out | $0.50 | $0.63 | $0.83 | $1.25 |
| Lead scoring1,200 in / 100 out | $0.23 | $0.29 | $0.38 | $0.57 |
| Email reply draft1,500 in / 400 out | $0.42 | $0.53 | $0.71 | $1.06 |
| Translation900 in / 800 out | $0.54 | $0.67 | $0.89 | $1.34 |
| Search re-ranking4,000 in / 50 out | $0.63 | $0.78 | $1.04 | $1.56 |
Work out your own real cost per resultTest GLM-5.3 Flash on your own prompt
Compare GLM-5.3 Flash with
- GLM-5.3$1.40 in / $4.40 outSwitch cost
- Qwen3.8 Flash$0.15 in / $0.47 outSwitch cost
- GPT-4o mini$0.15 in / $0.60 outSwitch cost
- gpt-oss-120b$0.15 in / $0.60 outSwitch cost
- Mistral Small 4$0.15 in / $0.60 outSwitch cost
Questions
How much does the GLM-5.3 Flash API cost?
$0.15 per million input tokens and $0.50 per million output tokens, or $0.03 per million for cached input. Price checked 12 Nov 2026; unchanged since we started tracking it.
What does a result that works really cost with GLM-5.3 Flash?
A support bot answer (about 3,000 tokens in, 300 out) costs $0.0006 per try. If 6 in 10 work first time, each answer that works really costs $0.001, because the redone ones were paid for too.