Is solar-pro4 deprecated?

Q: Is solar-pro4 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

upstage/solar-pro4

Vendor: upstage. 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/upstage/solar-pro4	524,288	131,072	$0.09	$0.36	—
openrouter	upstage/solar-pro4	524,288	131,072	$0.09	$0.36	—

Change history

Severity	Change	What	Detected
low	modified	upstage/solar-pro4: capabilities gained reasoning_effort	2026-09-18
low	added	new model openrouter/upstage/solar-pro4 (524,288 ctx)	2026-09-18
medium	repriced	upstage/solar-pro4: input_price_per_mtok $0.03/Mtok to $0.09/Mtok	2026-09-11
medium	repriced	upstage/solar-pro4: output_price_per_mtok $0.12/Mtok to $0.36/Mtok	2026-09-11
medium	repriced	upstage/solar-pro4: cache_read_price_per_mtok $0.0060/Mtok to $0.02/Mtok	2026-09-11
low	modified	upstage/solar-pro4: capabilities gained parallel_tool_calls	2026-09-04
low	added	new model upstage/solar-pro4 (524,288 ctx)	2026-08-11