Nous: Hermes 4 70B

The nousresearch/hermes-4-70b row left the OpenRouter catalog without a date of its own. The row carried no expiration_date, was last seen 2026-09-09, and is absent from the catalog snapshots of 2026-09-12 and 2026-09-14, with the departure recorded 2026-09-10. A listing stopped listing; the catalog gives no reason beyond the absence. That is the whole of what the catalog says.

What did not happen is a retirement of the model. The Hermes-4-70B weights, fetched 2026-09-14, remain published under the vendor's own account with the full model card — hybrid reasoning mode on Llama-3.1-70B, inference examples, and links to FP8 and GGUF variants — and the vendor's releases page, fetched 2026-09-14, still lists Hermes-4-Llama-3.1-70B dated 08/26/25 with no retirement note. The only newer Hermes the vendor positions near it, Hermes-4.3-Seed-36B, is listed alongside it as a separate smaller model ("Roughly equivalent performance to Hermes-4-70B at half the model size") with its own weights — a sibling, not a rename, and nothing on either page calls it a successor to this row.

OpenRouter's own records agree the listing is over and the family is served. Fetched 2026-09-14, openrouter.ai/nousresearch/hermes-4-70b answers 404, while …/models/nousresearch/hermes-4-70b/endpoints returns the old record with "endpoints":[] — the record survives, the supply behind it does not. The larger sibling never left: nousresearch/hermes-4-405b is still in the catalog snapshots, and its endpoints record, fetched 2026-09-14, holds one live Nebius endpoint. Nothing on OpenRouter says the 70B row will return, and nothing names a replacement row — no new nousresearch/ row arrived in the window, and the catalog's remaining Hermes entries are Hermes 3 and the 405B.

The withdrawn row's last-known listing carries not publishedlast known value, as of an unrecorded date — the source no longer lists this rowopenrouter-models, last checked 2026-09-14 in / not publishedlast known value, as of an unrecorded date — the source no longer lists this rowopenrouter-models, last checked 2026-09-14 out at not publishedlast known value, as of an unrecorded date — the source no longer lists this rowopenrouter-models, last checked 2026-09-14 of context. With no successor listing there is no weights-identity question to settle — no second listing claims these weights under another name.

The feeds: binding is kept. If nousresearch/hermes-4-70b is ever a catalog row again it binds straight back to this entry. The served sibling is carried separately as Nous: Hermes 4 405B.