GLM-5.3 Flash
The cost-frontier open model. A serious score, a serious license, and a price that makes a routing layer obvious.
Open weights
42Index · Published
$0.25Per measured task
168 pts/$Points / $
45Tokens / sec
No High score is published. Showing Published.
What this workload costs
List price for one call. Reasoning tokens count as output. A cache hit uses the lab’s cache rate when one is published.
GLM-5.3 Flash
Cache appliedSpecs
- API id
- Not published here
- Released
- Sep 2026
- Context
- 1M
- Max output
- 128k
- Input / 1M
- $0.15
- Output / 1M
- $0.50
- Cache read / 1M
- $0.03
- Knowledge
- —
- Inputs
- Text, Image, Video
- Weights
- MIT
List price after the launch promo ended on 9 Sep 2026. The promo was $0.075 / $0.25. Some hosts still sell below list. About 320B total, 18B active.
Text, image, video, and file input, from the 3 Sep 2026 vendor-price table.
Use it when
The open model you put on the cheap path. Index 42, multimodal input, MIT weights, $0.15 / $0.50 list, and $0.25 per measured task.
Leave it when
The last few points of frontier work. Sol, Grok, and MiMo-V2.6-Pro sit above it.