# nousresearch/hermes-3-llama-3.1-405b

Calls to the model nousresearch/hermes-3-llama-3.1-405b on OpenRouter stopped working on November 2, 2026.

On November 2, 2026, the model nousresearch/hermes-3-llama-3.1-405b stopped working. Any requests sent to model nousresearch/hermes-3-llama-3.1-405b fail since that date. OpenRouter no longer serves this model.

## The error OpenRouter returns once nousresearch/hermes-3-llama-3.1-405b is gone

HTTP 404

```json
{"error":{"message":"No endpoints found for nousresearch/hermes-3-llama-3.1-405b.","code":404}}
```

## What to use instead

OpenRouter stops serving it, so move to another model it lists.

- API: OpenRouter (openrouter.ai)
- Model: nousresearch/hermes-3-llama-3.1-405b
- Released: August 16, 2024 (models.dev)
- Kind: Model retirement
- Takes effect: November 2, 2026
- Calls after that day: fail
- Calls it hits: `model nousresearch/hermes-3-llama-3.1-405b`
- Source: [Model list](https://openrouter.ai/api/v1/models)
- Verified: November 6, 2026, against OpenRouter's own pages
- Page: https://www.okapi.bot/models/openrouter/nousresearch/hermes-3-llama-3.1-405b/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent