Z.ai (Zhipu GLM)
GLM-4.6V-Flash
Free vision-language model from Z.ai (listed at no cost on the pricing page).
USD per 1K images (≈1 MP, input only)
Free
#1 cheapest of 4 in Vision-language & image understanding
Official pricing ↗Capabilities, explained
What this API can do, and what each capability means for your project.
Text input price
—
Price of the text part of your prompt. Images are priced separately in the headline number.
Max images per request
10
How many images can be sent in one call; matters for comparing pages or frames.
Grounding / bounding boxes
—
Can return coordinates of objects or text regions instead of only describing them.
Video input
No
Accepts video clips or many frames, not only still images.
Document & chart understanding
Yes
Tuned for PDFs, tables, charts and screenshots rather than only natural photos.
Open weights
Yes
The model weights are downloadable, so you can self-host it or switch hosting providers without changing models.
Price history
Only one price recorded so far. The chart appears once the price changes.