Model Reviews

GLM-Image: Text Rendering in 6 Prompt Tests

GLM-Image: Text Rendering in 6 Prompt Tests

GLM-Image targets a hard problem in image generation: clean layouts with readable text. This review runs six real prompts that force titles, labels, prices, UI strings, and dense tables into one frame.

What GLM-Image does

GLM-Image is a text-to-image and image-to-image model built for high-fidelity visuals and information-dense designs. It targets posters, infographics, slides, menus, and any scene where text needs to stay legible.

Model page: https://wiro.ai/models/zai-org/glm-image

Test setup: 6 prompts, 1024×1024 output, 30 inference steps, guidance scale 1.5. Each prompt includes exact strings to render.

6 prompt tests

1) Streetwear poster (headline + sizes)

This prompt checks big display type and a short spec line. The headline stays crisp. The sizes line stays readable, but spacing turns a bit weird.

Minimal streetwear poster with a hoodie and the headline GLM-IMAGE TEXT TEST
Prompt: Minimalist streetwear poster, white background, green accent, centered hoodie product photo. Add crisp typography. Top line text: GLM-IMAGE TEXT TEST. Subhead: DROP 04. Footer small text: SIZES XS S M L XL. Print-ready, clean grid, high contrast, realistic fabric texture.

2) Heat pump infographic (labels + arrows)

Infographics show where most models crack. GLM-Image keeps the diagram clean and the component labels readable. One letter slips in the title. Heat becomes Heal.

Heat pump infographic with labeled parts and arrows
Prompt: Educational infographic on off-white paper texture. Topic: How a Heat Pump Moves Heat. Include a simple diagram with arrows and 5 labeled callouts: Evaporator, Compressor, Condenser, Expansion Valve, Indoor Air. Add a small legend box titled KEY. Flat vector style, sharp lines, readable labels.

3) Chalkboard cafe menu (items + prices)

Price lists often drift into gibberish. Here the model keeps every item and price intact. The handwriting look stays legible.

Chalkboard menu that reads WEEKDAY MENU with items and prices
Prompt: Chalkboard cafe menu photo, realistic lighting, handwritten chalk style but legible. Header text: WEEKDAY MENU. Items list with prices: Espresso 3.50, Latte 4.25, Matcha 4.75, Bagel 2.95, Cookie 1.80. Add small note: Oat milk +0.50.

4) Three-panel comic (short captions + speech bubbles)

Speech bubbles act like a stress test for punctuation and line breaks. The bubble text lands clean. The third caption comes out as DAY 3/ with a stray slash.

Three-panel comic strip with day labels and speech bubbles
Prompt: Three-panel comic strip, clean ink lines, soft colors. Panel 1 caption text: DAY 1. Speech bubble: Can this model write text? Panel 2 caption: DAY 2. Speech bubble: Yes, but keep prompts structured. Panel 3 caption: DAY 3. Speech bubble: Now try a long menu. Consistent character, simple background.

5) Airport departures board (dense table + status)

This prompt pushes alignment, repeated tokens, and table structure. The board looks believable. Column headers read correctly. The red DELAYED stands out. A few times show minor spacing quirks around the colon.

Airport departures board with rows of flights and a delayed status
Prompt: Airport departures board, wide shot, realistic LED matrix. Title text: DEPARTURES. Include 8 rows with columns FLIGHT, TO, GATE, TIME, STATUS. Fill with plausible entries, include at least one delayed row that says DELAYED. Keep text aligned and readable.

6) Dark mode app settings UI (small text + numbers)

UI text needs crisp edges. GLM-Image renders the screen cleanly, including the timer values and version string.

Dark mode Focus Timer settings screen with toggles and timer values
Prompt: Photorealistic smartphone settings screen screenshot on dark mode. App name at top: Focus Timer. Menu items with toggles: Vibration, Sound, Auto start, Break length 05:00, Session length 25:00. Small footer text: Version 2.6.1. Crisp UI, anti-aliased text.

What worked (and what slipped)

  • Short lists with prices work well. The menu stays accurate and readable.
  • Medium-length labels work well. Diagram parts read cleanly.
  • Very long or prominent titles can drop a character. Heat became Heal once.
  • Dense tables hold together, but spacing can wobble on small tokens like times.

Prompt tips for cleaner text

  • Keep titles short. Put the must-be-correct text early in the prompt.
  • Use lists with one item per line: item name + price. Avoid long sentences inside the design.
  • Limit the number of unique numbers in one frame. Tables stay cleaner with fewer rows.
  • When exact spelling matters, repeat the key string once. Do not repeat it five times.

Try GLM-Image

Run the same text-heavy prompts and see where it holds up: https://wiro.ai/models/zai-org/glm-image


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