Z.ai: GLM 5.3
This AI model from z-ai is named GLM 5.3. It handles text inputs with a maximum context length of 1,310,720 tokens and supports tools and reasoning capabilities. The model's structured output is not specified. For those looking for an AI that can handle complex text inputs and utilize external tools, this model may be worth considering. Its price point is $4.40 per million output tokens, which may be a significant investment depending on usage. With a blended benchmark score of 82.8 across one independent benchmark, it holds its own in terms of performance. Those with large budgets or specific needs related to text analysis and tool utilization might find this model suitable for their requirements.
Benchmark results
Independent, published benchmarks. Blended score 76.2 across 1 benchmark, last refreshed 2026-10-03. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 73.9 |
- Model ID
- z-ai/glm-5.3
- Vendor
- z-ai
- Released
- August 2026
- Tokenizer
- Other
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 131,072 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 $1.40/M input and $4.40/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.05 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.92 |
| A month of a busy support chatbot | 5M in / 2M out | $15.80 |
Price & spec history
Tracked daily by PicksByModel since 2026-08-19.
| Date | Input /M | Output /M | Context |
|---|---|---|---|
| 2026-10-02 | $1.40 | $4.40 | 1,048,576 |
| 2026-10-01 | $0.30 | $4.40 | 1,048,576 |
| 2026-09-30 | $1.40 | $4.40 | 1,048,576 |
| 2026-09-25 | $1.40 | $4.40 | 1,310,720 |
| 2026-09-22 | $0.84 | $2.64 | 1,310,720 |
| 2026-09-21 | $0.91 | $2.86 | 1,310,720 |
| 2026-09-20 | $0.90 | $2.82 | 1,310,720 |
| 2026-09-19 | $0.91 | $2.86 | 1,310,720 |
| 2026-09-14 | $1.40 | $4.40 | 1,310,720 |
| 2026-09-13 | $1.09 | $3.43 | 1,310,720 |
| 2026-08-29 | $1.40 | $4.40 | 1,310,720 |
| 2026-08-19 | $1.40 | $4.40 | 1,048,576 |
Similar models
Z.ai: GLM 5.1
Z.ai: GLM 5 Turbo
Z.ai: GLM 5.2
Z.ai: GLM 4.7
Z.ai: GLM 5
Z.ai: GLM 5.3 (batch)
Quick answers
- How much does Z.ai: GLM 5.3 cost?
- $1.40 per million input tokens and $4.40 per million output tokens.
- What is Z.ai: GLM 5.3's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Z.ai: GLM 5.3 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Z.ai: GLM 5.3 process images?
- No, it is text-only on the input side.