Z.ai: GLM 5.3 Prime
by Z.aiZ.ai: GLM 5.3 Prime is a large language model from Z.ai. It costs $2.80 per million input tokens and $8.80 per million output tokens. Its context window is 1M tokens.
- Input / 1M tokens
- $2.80
- Output / 1M tokens
- $8.80
- Cached input / 1M
- $0.560
- Context window
- 1M
On repeated prefixes
tokens
Who serves it cheapest
1 hosts serve GLM 5.3 Prime. Same weights, same API - the price difference is pure margin and routing.
| Provider | Input / 1M | Output / 1M | Context | Throughput | Uptime 24h |
|---|---|---|---|---|---|
| AlibabaCheapest | $2.80 | $8.80 | 1M | - | 97.3% |
About 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...
Specifications
| Model ID | z-ai/glm-5.3-prime |
|---|---|
| Provider | Z.ai |
| Context window | 1M tokens |
| Max output | 131K tokens |
| Input modalities | text |
| Output modalities | text |
| Knowledge cutoff | - |
| Open weights | No |
| Released | September 23, 2026 |
Cheaper alternatives
Models that cost less than GLM 5.3 Prime while keeping at least half its context window and every input modality it supports.
Frequently asked
How much does Z.ai: GLM 5.3 Prime cost?
$2.80 per million input tokens and $8.80 per million output tokens. Cached input reads cost $0.560 per million tokens.
What is the context window of Z.ai: GLM 5.3 Prime?
1M tokens, with up to 131K tokens of output per request.
Confirm against the source: Z.ai official pricing.