Compare

OpenRouter vs Portkey

OpenRouter scores higher on the AgentReady, 81/100 against 63/100. They differ on 14 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

OpenRouter. OpenRouter is a unified interface for AI models that provides access to hundreds of AI models through a single API endpoint.

Portkey. Portkey is a comprehensive platform designed to streamline and enhance AI integration for developers and organizations.

Where OpenRouter is ahead

OpenRouter passes llms-full.txt / full agent docs, and Portkey does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: structured api reference. Portkey misses it.

And on operate, agent compatibility verified. Portkey misses it.

Where Portkey is ahead

Portkey passes search discoverable, public docs discoverable and mcp discoverable, and OpenRouter does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: limits / constraints documented. OpenRouter misses it.

And on adopt, no mandatory sales call, official typescript sdk, official python sdk, cli available and mcp integration available. OpenRouter misses those.

Finally, on operate, canonical workflow succeeds and observable execution. OpenRouter misses those.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, programmatic credential creation, fast time to first request, copyable quickstart, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. OpenRouter leads 100 to 93. OpenRouter misses search discoverable, public docs discoverable, mcp discoverable; Portkey misses llms-full.txt / full agent docs.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. OpenRouter leads 92 to 38. OpenRouter misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Portkey misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. OpenRouter leads 88 to 80. OpenRouter misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, official typescript sdk, official python sdk, cli available, mcp integration available; Portkey misses programmatic credential creation, fast time to first request, copyable quickstart.

Operate. OpenRouter leads 44 to 39. OpenRouter misses canonical workflow succeeds, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution; Portkey misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

OpenRouter does not publish a machine-readable starting price and has a free tier. Portkey starts at $0/mo and has a free tier.

Signal by signal

Which to pick

Portkey clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: OpenRouter and Portkey. Alternatives to each: OpenRouter, Portkey.

An agent can fetch this as data: POST /v1/compare {"slugs": ["openrouter", "portkey"]}