Is hy4-preview deprecated?

Q: Is hy4-preview deprecated?

No — still supported. Listed by litellm, openrouter. No retirement date announced. Neither the provider's API nor its documentation has been checked for this model.

NOT DEPRECATED

Listed by litellm, openrouter. No retirement date announced. Neither the provider's API nor its documentation has been checked for this model.

state=alive sunset=none days_remaining=n/a severity=low sources=litellm,openrouter evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=yes divergent_fields=none checked=2026-09-30 15:40Z

tencent/hy4-preview

Vendor: tencent. Tracked by 2 of 5 sources.

What each source reports

**endpoint** = the provider's own machine-readable API, the strongest evidence. **provider docs** = the provider's own documentation, read by a model — first-party content, inferred reading. Unlabelled rows are third-party catalogs. Where sources disagree both values are shown rather than silently reconciled.
Source	ID	Context	Max out	In $/Mtok	Out $/Mtok	Sunset
litellm	openrouter/tencent/hy4-preview	1,048,576	64,000	$0.834	$2.501	—
openrouter	tencent/hy4-preview	1,048,576	64,000	$0.834	$2.501	—

Change history

Severity	Change	What	Detected
low	modified	tencent/hy4-preview: capabilities gained logit_bias, min_p	2026-09-28
low	modified	tencent/hy4-preview: capabilities gained presence_penalty, repetition_penalty, seed	2026-09-23
low	modified	tencent/hy4-preview: capabilities gained frequency_penalty, top_k, top_p	2026-09-23
low	added	new model openrouter/tencent/hy4-preview (1,048,576 ctx)	2026-09-18
low	added	new model tencent/hy4-preview (1,048,576 ctx)	2026-08-28