Qwen3.8 Flash vs Z.ai GLM 5.3 Flash
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- Both accept prompts up to 1M tokens.
- GLM 5.3 Flash output costs $0.043 per 1M via OpenInference, against the list price of $0.50.
- GLM 5.3 Flash is rated 24 points higher on the chess arena.
| Qwen3.8 Flash | GLM 5.3 Flash | |
|---|---|---|
| Vendor | Qwen | Z.ai |
| Released | 2026-08-26 | 2026-08-26 |
| Input / 1M | $0.15 | $0.15 |
| Output / 1M | $0.47 | $0.50 |
| Cached input / 1M | $0.016 | $0.03 |
| Blended / 1M (3:1) | $0.23 | $0.237 |
| Context | 1M | 1M |
| Max output | 131K | 944K |
| Accepts | text, image, video | text, image, video |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 2 | 38 |
| Cheapest provider, output | $0.47 | $0.043 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | 1473 ±84 | 1497 ±86 |
| Vendor API status | Operational | — |
Cost calculator
Qwen3.8 Flash
$16.05 per month$0.54 per day
GLM 5.3 Flash
$16.50 per month$0.55 per day
Qwen3.8 Flash saves $0.45 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Qwen3.8 Flash with