CaptchaAI Pricing: Thread-Based Breakdown

By Irina

Published at Feb 15, 2026

CaptchaAI pricing is based on the number of concurrent threads (parallel solves) and the CAPTCHA type. This guide explains how pricing works, what each plan includes, and how to estimate your costs.

How pricing works

CaptchaAI uses a thread-based pricing model. You pay for:

Plan tier — Determines your maximum concurrent threads
Per-solve cost — Varies by CAPTCHA type
Balance — Pre-paid credit that decreases with each solve

Your plan sets the ceiling for how many CAPTCHAs you can solve simultaneously. The per-solve cost deducts from your balance.

Cost by CAPTCHA type

Different CAPTCHA types require different infrastructure and resources. Costs vary accordingly:

CAPTCHA type	Relative cost	Why
Image/OCR	Lowest	Simple ML inference, fast
reCAPTCHA v2	Medium	Browser simulation required
reCAPTCHA v2 Invisible	Medium	Similar to v2
reCAPTCHA v3	Medium–High	Score optimization adds complexity
reCAPTCHA Enterprise	Higher	Enterprise validation requirements
Cloudflare Turnstile	Medium	Widget-based solving
Cloudflare Challenge	Higher	Full browser environment + proxy
GeeTest	Medium	Slider/interaction simulation
Grid Image	Medium	Computer vision analysis

Check captchaai.com for current per-solve rates.

Thread-based plans

Your thread count determines how many CAPTCHAs can be solved in parallel:

Threads	Good for	Typical use case
1–5	Testing, small projects	Single scraper, development
10–25	Medium workloads	Multiple scrapers, moderate traffic
50–100	Production systems	Distributed scraping, high-volume automation
100+	Enterprise	Large-scale pipelines, multi-tenant systems

More threads = more CAPTCHAs solved per minute. If you hit ERROR_NO_SLOT_AVAILABLE, you have reached your thread limit.

Estimating monthly costs

Calculate your expected costs:

Monthly cost = (CAPTCHAs per day × per-solve rate × 30) + plan cost

Example estimates:

Daily CAPTCHAs	Type	Approx. daily cost
100 reCAPTCHA v2	Medium rate	Budget-friendly
500 mixed types	Varies	Check dashboard for rates
1,000+ enterprise	Higher rate	Contact for volume pricing

The CaptchaAI dashboard shows your usage, balance, and per-type costs in real time.

Reducing costs

Strategy	Impact
Cache when possible	Avoid re-solving the same CAPTCHA
Use correct CAPTCHA type	Wrong type = wasted solve
Optimize polling	Fewer API calls = less overhead
Batch similar tasks	Queue and process efficiently
Monitor solve rates	Low success rate wastes credits — fix root causes
Use image/OCR when available	Lower cost than token-based
Set proper timeouts	Avoid paying for timed-out tasks

Checking your balance

Monitor balance programmatically:

import requests

resp = requests.get("https://ocr.captchaai.com/res.php", params={
    "key": "YOUR_API_KEY",
    "action": "getbalance",
    "json": 1
})
balance = float(resp.json().get("request", 0))
print(f"Balance: ${balance:.2f}")

Set up alerts when balance drops below a threshold to avoid interruptions.

Pay-as-you-go vs plans

Model	How it works	Best for
Pay-as-you-go	Add balance, threads included	Testing, variable workloads
Plans	Monthly subscription with thread allocation	Predictable workloads

Both models use the same per-solve rates. Plans offer higher thread counts and may include volume discounts.

FAQ

What happens when my balance runs out?

Tasks return ERROR_ZERO_BALANCE. Set up auto-refill or balance monitoring to avoid downtime.

Can I change my plan mid-month?

Check your CaptchaAI dashboard for plan management options. Upgrades typically take effect immediately.

Do failed or unsolvable CAPTCHAs cost credits?

CAPTCHAs that return ERROR_CAPTCHA_UNSOLVABLE are typically not charged. Incorrect solves can be reported via reportbad for potential refunds.

Is there a free tier?

Check captchaai.com for current signup offers and trial credits.

How do I get volume discounts?

Contact CaptchaAI for enterprise pricing when solving 10,000+ CAPTCHAs daily or requiring 100+ threads.

Start your CaptchaAI plan

Choose the right plan for your workload at captchaai.com.