z-ai
Z.ai: GLM 5.3 FlashX
This AI model, Z.ai: GLM 5.3 FlashX, is offered by vendor z-ai and supports input from text, image, and video modalities. It has a high context length of 1048576 tokens and can handle a maximum of 131072 completion tokens at once. For those on a budget, this model may be worth shortlisting due to its lower input price point of $0.37 per million tokens. However, it is currently priced higher for output tokens at $1.25 per million. The model's benchmark standing is uncertain as no independent coverage is reported in the available data.
Quality Score
100/100
price + capability + benchmarks
Input Price
$0.37
per 1M tokens · checked 2026-09-23
Output Price
$1.25
per 1M tokens · checked 2026-09-23
Context Window
1,048,576
tokens
- Model ID
- z-ai/glm-5.3-flashx
- Vendor
- z-ai
- Released
- September 2026
- Tokenizer
- Other
- Input Modalities
- text, image, video
- Output Modalities
- text
- Max Output
- 131,072 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.37/M input and $1.25/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.25 |
| A month of a busy support chatbot | 5M in / 2M out | $4.35 |
Strong choice for
Category rankings
Where Z.ai: GLM 5.3 FlashX places across the 1 category it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #4 | Video Auto-TaggingVideo · of 25 ranked | 123 |
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Quick answers
- How much does Z.ai: GLM 5.3 FlashX cost?
- $0.37 per million input tokens and $1.25 per million output tokens.
- What is Z.ai: GLM 5.3 FlashX's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Z.ai: GLM 5.3 FlashX support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Z.ai: GLM 5.3 FlashX process images?
- Yes, it accepts image input.