hf-internal-testing/T5-integration

MIC: T5 text-to-text generation

Model integration contract (MIC) for one usage path, across the checkpoints that share it. This repository holds the contract code and the manifest; each framework keeps its own expected results and pins this repository by revision. The model repositories are unchanged. It is a test artifact, not a model: exclude it from model search.

Usage path: AutoTokenizer + AutoModelForSeq2SeqLM.generate, batched.

File	What it is
integration.json	Manifest: checkpoints, which fixture covers each, frameworks, entry points, variants, unsupported targets, comparison rules
integrations/transformers/usage.md	Transformers contract, written as doc-builder runnable markdown: the same blocks are documentation and test

Checkpoint	Slim fixture (every framework PR)
google-t5/t5-small	hf-internal-testing/proto-t5-small-slim
google/umt5-small	hf-internal-testing/proto-umt5-small-slim (real checkpoint unsupported: config.json has no model_type, so AutoModelForSeq2SeqLM cannot load it; the fixture (saved with model_type umt5) covers the UMT5 code path)

Checked outputs: generated_tokens, generated_text, label_logprobs, decoded_roundtrip, training.loss, training.gradients, training.updated.

A fixture pass and a real-checkpoint pass have different scopes; either establishes agreement on fixed inputs and a recorded runtime, not correctness on arbitrary inputs.