There are two pricing models for CAPTCHA solving APIs. Understanding them before you sign up can save hundreds of dollars per month.
Per-solve pricing: You pay a fee for each CAPTCHA solved. More solves = more cost, linearly. Common among services that use human workers.
Thread-based pricing (CaptchaAI): You pay a fixed monthly subscription for a number of concurrent solve slots (threads). Solve as many CAPTCHAs as you want within your thread count.
The right choice depends entirely on your volume.
How each model works
Per-solve pricing
Total cost = Solves per month × Price per 1,000 / 1,000
Example (2Captcha reCAPTCHA v2 at $2.99/1,000):
10,000 solves → $29.90
100,000 solves → $299.00
1,000,000 solves → $2,990.00
Cost scales linearly with every solve. There is no ceiling and no discount for higher volume unless you negotiate a custom rate.
Thread-based pricing (CaptchaAI)
Total cost = Fixed monthly plan fee
Solves = Unlimited (bounded only by thread count and solve speed)
Example (CaptchaAI STANDARD, $30/month, 15 threads):
1 solve this month → $30
100,000 solves this month → $30
1,000,000 solves this month → $30
The plan fee is fixed. Volume does not change the cost.
Cost crossover: when CaptchaAI becomes cheaper
The crossover point — where CaptchaAI's fixed fee becomes cheaper than per-solve billing — depends on per-solve rate and which CaptchaAI plan you compare.
reCAPTCHA v2 crossover (2Captcha at $2.99/1,000 solves)
| Monthly solves | 2Captcha cost | CaptchaAI Basic ($15) | CaptchaAI Standard ($30) |
|---|---|---|---|
| 1,000 | $2.99 | $15.00 | $30.00 |
| 5,000 | $14.95 | $15.00 | $30.00 |
| 10,000 | $29.90 | $15.00 | $30.00 |
| 50,000 | $149.50 | $15.00 | $30.00 |
| 100,000 | $299.00 | $15.00 | $30.00 |
| 500,000 | $1,495.00 | $15.00 | $30.00 |
Crossover for the Basic plan: ~5,000 solves/month ($14.95 per-solve vs $15 fixed). Beyond that, CaptchaAI wins by a widening margin.
Cloudflare Turnstile crossover (2Captcha at $2.99/1,000)
| Monthly solves | 2Captcha cost | CaptchaAI Basic ($15) |
|---|---|---|
| 3,000 | $8.97 | $15.00 |
| 5,100 | $15.25 | $15.00 |
| 20,000 | $59.80 | $15.00 |
| 100,000 | $299.00 | $15.00 |
CaptchaAI also delivers 100% Turnstile success rate vs 80–90% at 2Captcha. Failed solves on per-solve APIs still consume time and may require a paid retry.
Hidden costs in per-solve pricing
Per-solve providers don't always charge for failed solves, but failures still carry costs:
1. Retry overhead
A 90% success rate means 10% of tasks require a retry. Each retry adds latency and sometimes another billable solve:
Target: 10,000 successful solves
Per-solve at 90% success rate:
Attempts needed: 10,000 / 0.90 = 11,111
Billed at $2.99/1,000: $33.22 for 10,000 successes
(vs $29.90 for 10,000 attempts)
CaptchaAI (>99.5% success rate):
Attempts needed: 10,000 / 0.995 = 10,050
Billed: $30/month regardless
2. Slow solves increase infrastructure cost
If your CAPTCHA solver takes 40 seconds instead of 10 seconds, your scraper holds connections open longer, consuming proxy credits, browser memory, and compute time. CaptchaAI's speed — reCAPTCHA v2 under 60s typically averaging 10–20s, Turnstile under 10s — reduces pipeline-level waste.
3. Cost unpredictability
Per-solve pricing makes monthly costs unpredictable. A scraper that runs harder than expected doubles your bill. CaptchaAI's fixed model makes budgeting exact.
When per-solve pricing makes sense
Per-solve is cheaper if your volume is very low:
- Under 4,000 reCAPTCHA v2 solves/month → per-solve costs less than CaptchaAI's Basic plan
- Highly irregular usage with months of near-zero activity
- Testing or one-off projects with no recurring need
For anyone running consistent automation — scraping jobs, monitoring tools, account workflows — the crossover happens fast and CaptchaAI saves money quickly.
Full comparison table
| Factor | Per-solve (2Captcha) | Thread-based (CaptchaAI) |
|---|---|---|
| Pricing model | Pay per 1,000 solves | Fixed monthly by thread count |
| reCAPTCHA v2 cost | $2.99/1,000 | Unlimited in plan |
| reCAPTCHA v3 cost | $2.99/1,000 | Unlimited in plan |
| Cloudflare Turnstile | $2.99/1,000 | Unlimited in plan |
| Image/OCR | $0.50–1.00/1,000 | Unlimited in plan |
| BLS CAPTCHA | Not supported | Unlimited in plan |
| Success rate (Turnstile) | 80–90% | 100% |
| Success rate (reCAPTCHA v2) | 90–95% | >99.5% |
| Cost at 100k solves/month | ~$299 | $15–$30 |
| Cost at 1M solves/month | ~$2,990 | $15–$300 |
| Predictable monthly bill | No | Yes |
| Supports BLS CAPTCHA | No | Yes |
Choosing a plan for your volume
Use this reference to match your expected monthly solves to a CaptchaAI plan:
BASIC ($15/month, 5 threads):
Good for: up to ~100,000 solves/month at moderate speed
Break-even vs per-solve: ~5,000 reCAPTCHA v2/month
STANDARD ($30/month, 15 threads):
Good for: up to ~400,000 solves/month
Break-even vs per-solve: ~10,000 reCAPTCHA v2/month
ADVANCE ($90/month, 50 threads):
Good for: up to ~1.5M solves/month
Break-even vs per-solve: ~30,000 reCAPTCHA v2/month
ENTERPRISE ($300/month, 200 threads):
Good for: multi-million solves/month
Per-solve equivalent cost: < $0.00001/solve
FAQ
Do I get charged per solve on CaptchaAI? No. CaptchaAI charges a flat monthly fee by plan. Solve volume does not affect your bill.
What if I need more threads than the Basic plan allows? Subscribe to multiple plans. Your threads are additive. Two Basic plans give 10 threads for $30/month.
Is per-solve ever refunded on failure? Most per-solve providers refund credits for failed solves, but not for slow solves or retries. CaptchaAI's unlimited model eliminates this concern.
How accurate is the cost comparison? The per-solve rates used are current published rates (2Captcha reCAPTCHA v2 at $2.99/1,000 as of 2026). Check provider sites for latest figures.
Make the switch to unlimited
If you're currently paying per-solve and your monthly CAPTCHA volume is above 5,000, you're spending more than you need to. Start your CaptchaAI plan at captchaai.com and lock in unlimited solves from day one.
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