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2captcha vs Cloudflare

Cloudflare scores higher on the AgentReady, 98/100 against 58/100. They differ on 12 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

2captcha. Captcha solving service that provides API-based captcha solving for developers and captcha entry work for workers.

Cloudflare. One platform for your apps, agents, and workforce.

Where 2captcha is ahead

2captcha passes search discoverable, and Cloudflare does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: authentication documented. Cloudflare misses it.

And on adopt, fast time to first request, copyable quickstart, official typescript sdk and official python sdk. Cloudflare misses those.

Finally, on operate, canonical workflow succeeds, structured, predictable output and observable execution. Cloudflare misses those.

Where Cloudflare is ahead

Cloudflare passes structured api reference, and 2captcha does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

It also holds adopt: cli available. 2captcha misses it.

And on operate, agent compatibility verified. 2captcha misses it.

What neither does

Both fail public docs discoverable, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, no mandatory sales call, programmatic credential creation, 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. Cloudflare leads 100 to 87. 2captcha misses public docs discoverable; Cloudflare misses search discoverable, public docs discoverable.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Cloudflare leads 92 to 31. 2captcha misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Cloudflare misses openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Cloudflare leads 100 to 65. 2captcha misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, cli available; Cloudflare misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, official typescript sdk, official python sdk.

Operate. Cloudflare leads 100 to 47. 2captcha misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Cloudflare misses canonical workflow succeeds, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution.

Pricing

2captcha starts at $0.5 per 1000 with no free tier. Cloudflare starts at $0/mo and has a free tier.

2captcha plansCloudflare plans
Image Captcha $0.5 — $1 per 1000Free $0/month
reCAPTCHA v2 $1 — $2.99 per 1000Pro $20/mo billed annually or $25/mo billed monthly
reCAPTCHA v2 Callback $1 — $2.99 per 1000Business $200/mo billed annually or $250/mo billed monthly
reCAPTCHA v2 Invisible $1 — $2.99 per 1000Contract Custom
Cloudflare Turnstile $1.45 per 1000Free (SASE) $0 forever
reCAPTCHA v3 (score <= 0.3) $1.45 per 1000Pay-as-you-go (SASE) $7/user/month
reCAPTCHA v3 (score > 0.3)Contract (SASE) Custom
reCAPTCHA Enterprise $1 — $2.99 per 1000Free (Developer Platform) No credit card needed
Arkose Labs captcha (FunCaptcha) $1.45 — $50 per 1000Paid (Developer Platform) Starts at $5/month
Amazon captcha $1.45 per 1000-
ALTCHA $2.99 per 1000-

Signal by signal

Signal2captchaCloudflare
AgentReady5898
Discovery87100
Understanding3192
Adoption65100
Operability47100
Public APIYesYes
MCP serverYesYes
OpenAPI specUnknownYes
CLIUnknownYes
llms.txtYesYes
Self-serve signupYesYes
Free tierNoYes

Which to pick

2captcha clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: 2captcha and Cloudflare. Alternatives to each: 2captcha, Cloudflare.

An agent can fetch this as data: POST /v1/compare {"slugs": ["2captcha", "cloudflare"]}