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Nebius nousresearch/hermes-4-70b model retirement

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On August 31, 2026, Nebius retired model nousresearch/hermes-4-70b. Calls using this model fail since that date. The deprecation applies to requests directed to the api.studio.nebius.ai host.


What to use instead of nousresearch/hermes-4-70b

Move to nvidia/Nemotron-3_5-Lightning, which is recommended by Nebius.

In Nebius's words

Deprecating Model: NousResearch/Hermes-4-70B; Recommended Replacement: nvidia/Nemotron-3_5-Lightning

Nebius, Model notices

Facts

API
Nebius api.studio.nebius.ai
Model
nousresearch/hermes-4-70b
Kind
Model retirement
Takes effect
August 31, 2026
Calls after that day
Fail
Source
Model notices
Last updated
Verified
, against Nebius's own pages

Questions

When does nousresearch/hermes-4-70b shut down?

Calls to the model nousresearch/hermes-4-70b on Nebius stopped working on August 31, 2026.

What happens to calls after August 31, 2026?

They have failed since August 31, 2026.

How do I find the calls this hits in my code?

Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.


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You fixed this one by hand.

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