SOTA Open-Source Text Rendering for Technical Diagram Labels
MOSS-Image leads the evaluated open-weight models on LongLongTextBench with 96.3% mean text coverage. The report describes 240 tasks with target passages averaging about 1,340 characters. For technical diagram labels, use that result to select a candidate and verify each abbreviation and its associated object. LLTB technical report · Official evaluation
Turn a published multi-line text example into a diagram audit
The model page shows multiple lines of Chinese text inside a classroom illustration. The authors also evaluate long English and Chinese groups separately, reporting 97.1% and 92.4% coverage respectively. A technical diagram adds the need to connect a term to the right pointer, region, or symbol. Published image and metrics
| Check | Example failure |
|---|---|
| Text fidelity | One character changes in an acronym |
| Binding | A pointer connects to a different component |
| Legend consistency | A label appears with another symbol |
| Small-format legibility | A subscript disappears in the final export |
For a proposed pilot, create a small glossary and a diagram of an approved software pipeline. Include near-identical terms and place a short explanatory note below the legend. Inspect the image at normal display size. Score exact strings first and then verify each label’s target. A high text-coverage result can coexist with a wrong connection.
The repository supports natural-language and JSON Layout prompts. Use the direct-generation SFT checkpoint for a mockup and keep an approved vector or editable master for the final diagram. Published coverage applies to the model evaluation, while the pilot measures correctness of the label-to-object relationships. Repository · SFT card
See wayfinding checks, agenda grouping, and parts layouts.
English SEO keywords
SOTA open-source text rendering, diagram labels, LLTB, MOSS-Image.
Frequently asked questions
Does LLTB coverage evaluate pointer accuracy?
Inspect each pointer and compare its destination with the approved diagram.
Can an exact string still fail review?
Yes. It can be associated with the wrong region or symbol.
Which variant should I use first?
Use SFT for the direct image mockup.