OpenRouter
Short answer
OpenRouter is an aggregator that routes a single API key to many model providers, with automatic fallback. Pricing usually matches the provider's official list price for the underlying model.
OpenRouter is the most common "router" you'll see on PlanPulse. You send a request like openai/gpt-5.5 or anthropic/claude-sonnet-4.6, and OpenRouter forwards it to the right provider with one bill.
- Pros: one API key, automatic fallback if a provider is down, easy to switch models without re-integrating.
- Cons: fine-grained pricing tiers (cache reads, cache writes, batch discounts) are usually not surfaced — you pay a single per-token number.
On PlanPulse, OpenRouter rows usually match the direct-API price for headline figures but are marked Needs Review on cached input (because the cache tiers aren't separately listed).