FAQ

#Is Solvecha compatible with NopeCHA?

Solvecha follows the request and response formats, the error codes and the endpoint paths of NopeCHA's recognition API. A client that lets you set the base URL can talk to Solvecha: replace the base URL and use your Solvecha API key. Only JSON and url-encoded form bodies are supported, not multipart.

#How accurate is it?

Our model gets 98 % of the image cells right on a hand-checked test set of 453 challenges (October 2026, per image cell). Three measurements. Solved within 3 tries: 99.7 % of user sessions got a token within up to 3 fresh challenges on Google's public reCAPTCHA demo (299 of 300, October 2026). Image accuracy: 98 % of image cells right on a hand-checked test set (October 2026). Solved challenges: on Google's public reCAPTCHA demo our model solved 14 % more challenges than NopeCHA with the same captchas (October 2026). The method and raw numbers are on the compare page. Results on other sites, IPs and captcha settings can differ.

#How is usage counted?

Only successful solutions are counted. A request that could not be answered is not charged. Your daily quota (plan or free tier) resets every day at 00:00 UTC. A balance does not reset.

#What happens when my quota is used up?

If you have a balance, your key keeps working and pays from it. If not, new requests fail with error 16 (Out of credit) until the daily quota resets at 00:00 UTC, or until you top up. On the v1 paths this is HTTP status 403.

#What are the rate limits?

Each key has a limit for create requests per minute. Free tier only: 10. Pay per use: 300. Plans: Starter 60, Basic 300, Professional 600, Enterprise 1200. Requests above the limit fail with error 11 (Rate limit reached).

#Which captcha types are supported?

reCAPTCHA image grids (3x3, 4x4 and 1x1), text captchas, GeeTest sliders and FunCAPTCHA (tile selection and match). See the captcha types page for the input and output of each type.

#Is there a browser extension?

Yes. The Chrome extension solves reCAPTCHA v2 image challenges (3x3, 4x4 and dynamic grids) with your Solvecha key. Download it from the extension page and load it unpacked. A Chrome Web Store version and a Firefox Add-ons version are coming soon.

#Does the extension work with Playwright, Puppeteer or Selenium?

Yes. Load the unzipped folder as an extension in Chromium, Chrome for Testing or the Chromium that Playwright installs, and save your key once. The extension page has a short example for each tool.

#What does the extension send to Solvecha?

The challenge pictures, the task text and your key, to get the answer. After each round it can also send a yes or no from Google (accepted or rejected) with the job id and the grid size, without pictures or page address. You can switch that off in the extension settings.

#Does Solvecha work with CloakBrowser?

Yes. CloakBrowser is a Chromium build with a modified fingerprint, made by CloakHQ. It aims to keep captchas from appearing, and the Solvecha extension solves the reCAPTCHA image challenges that still appear. We tested the extension in CloakBrowser on Google's reCAPTCHA demo page: 15 of 15 runs passed. The CloakBrowser wrapper is MIT licensed. The browser binary has its own license, and the latest build can need a CloakBrowser subscription, so read cloakbrowser.dev. Solvecha is not affiliated with CloakHQ. The guide Using with CloakBrowser in the docs has the code.

#Can AI tools read the documentation?

Yes. Every documentation page is also served as Markdown: add .md to its address, for example /docs/quickstart.md. The file /llms.txt lists all pages, /llms-full.txt holds the complete documentation in one file, and /openapi.json describes the API.

#Is there a free plan?

Yes. Every account with a confirmed e-mail address gets 100 successful solutions per UTC day, with no card. The free tier works while you have no active plan. A key that only has the free tier can send 10 create requests per minute. To stop misuse, at most 2 new free accounts per network address get it automatically each day (more wait for a review), disposable e-mail domains do not get it, and we can block free use for an account. The free tier is a gift: it gives no legal claim, and we can limit or change it.

#Can I pay per use?

Yes. Top up a prepaid balance with any amount from $5 to $5,000 (one payment on a secure Stripe page, VAT included, invoice by e-mail). Each successful solution costs $0.0002, which is $0.20 per 1,000, for every captcha type. Failed requests cost nothing. The balance never expires, and keys that pay from a balance can send 300 create requests per minute. Your balance is used last: first the daily quota of your plan, then the free quota, then the balance. When nothing is left, requests fail with error 16.

#What happens to the images I send?

Images are processed to produce an answer. Our recognition engine deletes them after 7 days and its request records after 30 days. Some reviewed samples are kept longer to check and improve the models. If our own models cannot answer, the engine forwards the image and the task text to NopeCHA (USA) and returns its answer. Details are in the Privacy Policy.

#Can I cancel, and can I get a refund?

You can cancel at any time, without signing in, with Cancel contracts here in the footer. The plan then runs to the end of the paid month. Consumers can withdraw within 14 days of the order with Withdraw from contract here and get their payments back, less a fair share for the service used if they asked for an immediate start. For a top-up, you get back the unused part of the balance. We do not refund a month that has started in other cases, and we do not refund a balance that you have used, except for double charges. Read the page Refunds, cancellation and withdrawal for the full rules.

#Do the prices include VAT?

The prices on this site are shown incl. VAT. Stripe works out the VAT from your billing address at checkout. A business with a valid EU VAT ID can enter it there.

#Is Solvecha affiliated with NopeCHA?

No. Solvecha is an independent service. We name NopeCHA to describe API compatibility and to compare prices. We also use NopeCHA as a fallback: when our own models cannot answer a request, the engine passes it on to NopeCHA.

#What am I allowed to use it for?

Use Solvecha only for legitimate purposes, such as accessibility, testing your own sites, and places where you have permission. Fraud, spam, account takeover and bypassing protection without permission are forbidden. We may block keys that break the Acceptable Use Policy.