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Anchor Browser vs Steel

Steel scores higher on the AgentReady, 90/100 against 64/100. They differ on 11 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Anchor Browser. Anchor Browser provides computer environments for AI agents - secure cloud browsers that allow agents to navigate, authenticate, fill forms, and extract data on sites.

Steel. Steel is an open source browser API that lets you control fleets of browsers in the cloud.

Where Anchor Browser is ahead

Anchor Browser passes authentication documented, and Steel does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

Where Steel is ahead

Steel passes clear product positioning, and Anchor Browser does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: openapi / spec quality, pricing understandable, request examples provided, response examples provided and errors and status codes documented. Anchor Browser misses those.

And on adopt, programmatic credential creation and free trial or free allowance. Anchor Browser misses those.

Finally, on operate, machine-readable errors and agent compatibility verified. Anchor Browser misses those.

What neither does

Both fail limits / constraints documented, 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. Steel leads 100 to 87. Anchor Browser misses clear product positioning; Steel misses nothing.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Steel leads 85 to 38. Anchor Browser misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Steel misses authentication documented, limits / constraints documented.

Adopt. Steel leads 100 to 85. Anchor Browser misses programmatic credential creation, free trial or free allowance; Steel misses nothing.

Operate. Steel leads 76 to 47. Anchor Browser misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Steel misses retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

Anchor Browser does not publish a machine-readable starting price. Steel does not publish one and has a free tier.

Signal by signal

Which to pick

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

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