Z.ai · Released Sep 23, 2026
GLM 5.3 Prime
GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...
- Released
- Sep 23 2026
- Context window
- 1M 131K out
- Input / 1M tokens
- $2.80
- Output / 1M tokens
- $8.80
Where to run it
Providers
Only Alibaba serves GLM 5.3 Prime on OpenRouter right now.
| Provider | Input | Output | Cache read | Context | Max output | Uptime | vs. best |
|---|---|---|---|---|---|---|---|
| Alibaba | $2.80 | $8.80 | $0.56 | 1M | 131K | 99.9%24h | Cheapest |
Benchmarks
Benchmark scores
No benchmark scores yet — Epoch AI hasn't evaluated GLM 5.3 Prime. Scores appear here automatically once it does.
Specs
Details
- Model ID
z-ai/glm-5.3-prime- Developer
- Z.ai
- Release date
- Sep 23, 2026 ·
- Context window
- 1,000,000 tokens
- Max output
- 131,072 tokens
- API price
- $2.80 / $8.80 per 1M input / output tokens
- Providers
- 1
- Input types
- text
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- No
- Free tier
- No
Release date, prices and providers from OpenRouter's catalog; buying directly from a provider can cost a little differently. Uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.