Artifact ABI

The .slm Model Format

.slm is the project-specific binary model artifact designed for strict browser loading, bounded validation, and compact local execution.

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Why not generic model files

Generic model formats are flexible, but that flexibility usually requires broader parsers, larger metadata surfaces, and more runtime interpretation. TinyRustLM uses a narrower artifact contract so the browser runtime can validate and load only what it knows how to execute.

Header validation
Tensor directory validation
Tokenizer checksum
Layout checksum
Finite payload checks

Structural invariants

The format records explicit model dimensions and tensor entries. Header fields must be non-zero, tensor entries must point inside the file, declared shapes must match payload counts, and checksums must bind the artifact before generation is allowed.

108-byte header target
64-byte tensor entries
Non-zero checksum
No NaN or Infinity payloads

Tokenizer inclusion

The runtime supports byte-level fallback and compiled BPE metadata. Tokenizer data belongs inside the model artifact or its verified sidecar path so generation does not depend on Python-only tokenizer files at runtime.

Byte fallback
BPE metadata
Bounded decode
Tokenizer drift checks

Plain PHP deployment notes

No WordPress bootstrap, theme system, database requirement, composer package, npm build, CDN script, Bootstrap class dependency, or jQuery dependency.

Routes are handled by index.php and server rewrites. Core content lives in data/pages.php. HTML and Markdown share the same page data.

Upload the package to the subdomain root, point Apache/Nginx to the folder, and keep .htaccess enabled for clean routes on Apache.