Keep Your Agent Running When Models Disappear

Providers retire and restrict models routinely. More than 70 models have been pulled or deprecated by providers in the last few years. Anthropic’s Fable being pulled recently is perhaps the most high-profile and impactful example of this we’ve seen, but the pattern isn’t new and isn’t going away. OpenRouter already handles one layer of this for you. When a model runs on several providers and one of them fails or rate-limits, the marketplace reroutes to another provider automatically, with no configuration. We cover how that failover works in a separate post. That keeps a single model reachable through provider trouble, but it can’t help once the model itself is gone. For that you want model failover, where requests move to a different model when your first choice disappears. Presets are how you set that…