Z.ai: GLM 4.5
Z.ai's GLM 4.5 is designed for text-based applications with a context length of up to 131,072 tokens and supports reasoning and tools integration; however, it does not offer structured output directly. This model can handle complex tasks requiring extended context comprehension and tool assistance. Given its blended benchmark score of 53.2 across two independent evaluations, Z.ai GLM 4.5 should be considered for projects that benefit from robust text handling and reasoning capabilities. Its pricing at $0.6 per million input tokens and $2.2 per million output tokens makes it more suitable for applications requiring significant text processing; users should weigh this cost against the benchmark performance to determine if it aligns with their project needs.
Benchmark results
Independent, published benchmarks. Blended score 53.2 across 2 benchmarks, last refreshed 2026-08-13. 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 4.5V
Z.ai: GLM 4.5 Air
Z.ai: GLM 5.1
Z.ai: GLM 5 Turbo
Z.ai: GLM 5.2
Z.ai: GLM 5
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.