Z.ai: GLM 4.5
Z.ai: GLM 4.5 is designed to process text inputs up to a context length of 131,072 tokens and can generate up to 98,304 completion tokens. It supports reasoning capabilities and tools integration but does not provide structured output. While it covers two benchmark categories-AI Index and Eqbench-it does not offer open-source weights or structured data outputs. Given its blended benchmark score of 53.1 across these benchmarks, Z.ai: GLM 4.5 is particularly suitable for projects requiring robust text-based reasoning and tool integration within a budget. Its pricing at $0.6 per million input tokens and $2.2 per million output tokens makes it cost-effective for applications where text processing and basic reasoning are key needs.
Benchmark results
Independent, published benchmarks. Blended score 53.1 across 2 benchmarks, last refreshed 2026-07-21. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 32.2 |
| 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 Turbo
Z.ai: GLM 5.2
Z.ai: GLM 5.1
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.