Z.ai: GLM 4.5
The Z.ai GLM 4.5 is a text-based AI model designed for tasks requiring context and reasoning. It can handle input in the form of text, with a maximum context length of 131072 tokens. The model supports tools and reasoning capabilities, but does not produce structured output. When considering which AI model to use, the Z.ai GLM 4.5 may be a viable option for those requiring text-based processing and handling large contexts. Its pricing is competitive at $0.6 per million input tokens and $2.2 per million output tokens. However, its benchmark performance of 53.2 across two independent tests is not exceptional; it ranks relatively low in some areas, such as the AI Index benchmark score of 32.6. As with any model, further testing may be necessary to determine whether its capabilities meet specific needs.
Benchmark results
Independent, published benchmarks. Blended score 53.2 across 2 benchmarks, last refreshed 2026-09-04. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 32.6 |
| EQ-Bench | emotional understanding in dialogue | 67.4 |
- Model ID
- z-ai/glm-4.5
- Vendor
- z-ai
- Released
- July 2025
- Tokenizer
- Other
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 98,304 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.60/M input and $2.20/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.02 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.41 |
| A month of a busy support chatbot | 5M in / 2M out | $7.40 |
Similar models
Z.ai: GLM 5.2 (free)
Z.ai: GLM 4.5V
Z.ai: GLM 4.5 Air
Z.ai: GLM 5.3
Z.ai: GLM 5 Turbo
Z.ai: GLM 5.2
Quick answers
- How much does Z.ai: GLM 4.5 cost?
- $0.60 per million input tokens and $2.20 per million output tokens.
- What is Z.ai: GLM 4.5's context window?
- 131,072 tokens, roughly 196 pages of text in a single request.
- Does Z.ai: GLM 4.5 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Z.ai: GLM 4.5 process images?
- No, it is text-only on the input side.