InferenceSaver vs Portkey

InferenceSaver and Portkey are not the same kind of product, and the comparison only makes sense once that is said plainly. Portkey is a layer you put in front of the provider accounts you already pay. We are the account you pay. Almost every difference below follows from that one structural fact.

• Whether the inference itself gets cheaper, or only better governed.
• Whether there is a second bill for the layer sitting in front of your providers.
• Whether image, video, and audio bill from the same balance or from whoever you proxy to.

The table below keeps the rows where Portkey is clearly ahead rather than quietly dropping them. Guardrails, prompt management, and self-hosting are theirs, and a comparison that hid that would not be worth reading.

• Where Portkey is the stronger product, the row says so.
• Where the two do the same thing, the row says that too.
• Every row is checkable against either product's own documentation.

One-word verdicts are claims, not evidence. The three sections below take the rows that decide most migrations and show where they actually land: on the invoice, in a traced request, and on the bill for everything that is not text.

• Cost — what changes about the number at the bottom of the invoice.
• Observability — what a single request records once it has run.
• Media — where image, video, and audio spend ends up.

This is the row that matters most, because it is the one that is structural rather than a feature toggle. A gateway can make your calls more reliable; it cannot make your provider's list rate go down.

• Who you are buying inference from, and at what rate.
• Whether the layer in front adds a second line item.
• What a shared team balance can attribute without extra plumbing.