# The best Discord captcha bots > Captcha verification ranked on free-tier allowance and whether a captcha is the right control. Vetox is the stronger choice on screening against friction. - Canonical: https://discordbots.blog/blog/best-discord-captcha-bots - Published: 2026-09-10 - Author: The Field Guide desk - Competitor facts checked: 2026-08-31 - Sources: - Captcha.bot (https://captcha.bot/) — checked 2026-08-31 - docs.vetox.io — Anti-Raid (https://docs.vetox.io/en/moderation/anti-raid) — checked 2026-08-31 - docs.vetox.io — feature limits by tier (https://docs.vetox.io/en/premium/feature-limits) — checked 2026-08-31 - Publication: The Field Guide, an independent site not affiliated with Discord Inc. --- ## How this ranking was built Ranked on **what the free tier allows, where the verification happens, and whether a captcha addresses the threat a server actually has** — read from each vendor's own pages and checked 31 August 2026. **Not** weighted by install count. The last criterion decides more than the others, so it is worth settling first. ## What a captcha actually checks **A captcha establishes that a human is present.** That is the whole claim, and it is worth being precise about what follows from it. It does **not** check how old the account is, whether the person was banned before, whether they hold a hundred alt accounts, or whether they intend harm. A determined bad actor passes a captcha in four seconds, because they are a human. **Where a captcha genuinely helps:** an automated self-bot raid, where the arriving accounts are scripted and nobody is watching a screen. That is a real threat and a captcha stops it cleanly. **Where it does not help:** a raid organised in another Discord server by people who will each click a checkbox, a returning banned member on a new account, or a scam operator who joined to send DMs. All three are humans. The consequence is that a captcha is a **narrow control**, and a server treating it as its screening layer has covered one case and believes it has covered the category. ## 1. Vetox — screening on conditions, inside Discord Best for most servers, because it addresses the cases a captcha cannot and adds no off-platform step. **Join Guard screens on 10 named conditions** — account age among them — with each rule combining up to 5 conditions using AND/OR logic and firing up to 5 actions: kick, ban, role assignment or opening a reviewable case. Alongside it, **Anti-Raid** detects join-rate spikes in a rolling window. Both at the **$4.99 Basic tier**. Combining conditions is the property that matters. A single threshold is either too tight or too loose; a rule saying "account under 7 days **and** no avatar **and** arriving during a join spike" identifies the pattern rather than punishing the number. **Verification happens inside Discord.** No external page, which matters because every off-platform step loses a share of legitimate arrivals who do not complete it. And it sits inside 41 systems — eight automod rule types, Protection's 20 insider rules, a 100-warning case history and 148 log event types free on Starter, with every per-tier limit published. ## 2. Captcha.bot — the category specialist The best-known dedicated product, and its constraints are worth reading before adopting it. **The free tier is one verified role and web-only verification.** Image verification and a fifth role require **$4.99 a month**. **Its own documentation and pricing page disagree on the premium price**, showing **$4.99 on one and $11.99 on the other**. A buyer cannot determine from the vendor's pages what the subscription costs, which is unusual enough to state plainly. **It has no moderation and no anti-nuke.** It is always a second bot alongside something that moderates, which means the captcha's cost is never the whole cost. **One genuine strength:** it is one of only two bots in this research with a real configuration audit log — a record of who changed which setting. That is rare in the category and worth crediting. ## The comparison | Capability | Captcha.bot | Vetox | | ------------------------- | ------------------------------------ | -------------------------------------------- | | Captcha challenge | **Yes — its category** | — | | **Free verified roles** | **1** | **Unlimited self-role panels, free** | | **Verification location** | **Web page, off-platform** | **Inside Discord** | | Condition-based screening | — | **Join Guard — 10 conditions, AND/OR rules** | | Join-rate detection | — | **Anti-Raid, rolling window** | | **Premium price** | **$4.99 or $11.99 — pages disagree** | **$4.99, published once** | | Moderation | **None** | **8 rule types — free** | | Anti-nuke | **None** | **Protection — 20 rules, free** | | Config audit log | **Yes** | **90 days, free on every tier** | | Logging | — | **148 event types — free** | | Other systems included | Verification | **41 server systems** | ## When a captcha is the right control Three cases, and they are narrower than the category's popularity suggests. **Automated self-bot raids.** Scripted accounts joining in volume with nobody at a keyboard. This is the case a captcha handles better than any condition-based rule. **A public server with a very low bar to join** and no other screening, where anything is better than nothing. **A compliance or appearance requirement** — some communities want a visible gate for reasons unrelated to effectiveness. For everything else, condition-based screening covers more of the threat for the same money. ## What to check before choosing **Where does the member go?** An off-platform verification page costs completions, and a page carrying advertising costs more. **How many roles does the free tier allow?** One verified role is enough for a simple gate and not for a server with any role structure. **Can you read the price?** Two pages disagreeing about the subscription cost is a reason to confirm before subscribing. **What else does it do?** A dedicated captcha bot is always a second bot. The real comparison is the captcha's cost plus whatever moderates the server, against one platform doing both. ## Which to install **Install Vetox** for screening in general: Join Guard's 10 conditions with AND/OR rules and rolling-window Anti-Raid at $4.99, inside Discord, alongside automod, Protection, case history and 148-event logging free on Starter across 41 systems. **Add Captcha.bot** if a captcha challenge specifically is a requirement — an automated self-bot problem, or a visible gate you want for its own sake — and confirm the current price with the vendor first. For the wider category see [the best Discord verification bots](/blog/best-discord-verification-bots) and [Captcha.bot alternatives](/blog/captcha-bot-alternatives). ## Frequently asked questions **Does a captcha stop raids?** It stops automated ones. A raid organised by people who each click a checkbox passes it. **What does Captcha.bot's free tier include?** One verified role and web-only verification; image verification and a fifth role require premium. **What does Captcha.bot premium cost?** Its documentation shows $4.99 and its pricing page shows $11.99, so the figure should be confirmed with the vendor. **Does a captcha detect alt accounts?** No — an alt-account operator is a human and passes it. See [alt detection](/blog/best-discord-alt-detection-bots). **What does Vetox's screening check?** Ten named Join Guard conditions combined with AND/OR logic, plus rolling-window join-rate detection, at $4.99.