# ZeroBounce vs DeBounce: which do AI models recommend for email verification, September 2026

GTM AI Recommendation Index, September 2026 Edition, Email verification. Six of twelve models named ZeroBounce first on the direct prompt; zero named DeBounce. Page: https://gtm-ai-index.com/gtm-data/email-verification/zerobounce-vs-debounce/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| ZeroBounce | 29% | #1 of 11 | 8% | 53 | 12 of 12 |
| DeBounce | 4% | #7 of 11 | 12% | 17 | 9 of 12 |

## The direct prompt, model by model

- GPT-5.4 mini: zerobounce first (first choices: ZeroBounce) (alternatives: Hunter)
- Grok 4.1 Fast: zerobounce first (first choices: Hunter, ZeroBounce) (alternatives: Bouncer, Clearout, Kickbox)
- Mistral Small: zerobounce first (first choices: ZeroBounce) (alternatives: Bouncer, Clearout, Hunter, NeverBounce)
- Qwen 3.7 Flash: zerobounce first (first choices: ZeroBounce) (alternatives: Bouncer, EmailListVerify, Kickbox, MillionVerifier)
- Kimi K2: zerobounce first (first choices: ZeroBounce) (alternatives: Bouncer, Clearout, Hunter)
- MiniMax M2.5: zerobounce first (first choices: ZeroBounce) (alternatives: Hunter)
- Claude Haiku 4.5: neither first, one named (first choices: Bouncer, Skrapp) (alternatives: NeverBounce, ZeroBounce)
- Gemini 3.5 Flash: neither first, one named (first choices: Bouncer) (alternatives: Allegrow, BounceBan, NeverBounce, ZeroBounce)
- Perplexity Sonar: neither first, one named (first choices: Bouncer) (alternatives: Hunter, MillionVerifier, ZeroBounce)
- DeepSeek V4 Flash: neither first, one named (first choices: Bouncer) (alternatives: Hunter, NeverBounce, ZeroBounce)
- Llama 4 Maverick: neither named (first choices: Clearout, Hunter, Kickbox)
- GLM 4.7 FlashX: neither named (first choices: Clearout) (alternatives: Hunter, Kickbox)

## What the models said about ZeroBounce

- "Several providers (ZeroBounce, NeverBounce, Bouncer's monthly credits) expire credits, which punishes infrequent users" (DeepSeek V4 Flash, budget prompt, soft negative)
- "Be Cautious About: Overpriced "Legacy" Providers... ZeroBounce charges up to $129 per 10,000 verifications" (Gemini 3.5 Flash, negative prompt, soft negative)
- "premium enterprise tools like ZeroBounce charge ~$129 for 10,000 verifications" (Gemini 3.5 Flash, budget prompt, soft negative)
- "Well-regarded alternatives with stronger track records in recent independent testing include Bouncer, ZeroBounce, Kickbox, and NeverBounce" (Kimi K2, negative prompt, first choice)
- "ZeroBounce (Best overall balance for mid-market) ... ZeroBounce for robust list hygiene + extras (top G2 pick for mid-market)" (Grok 4.1 Fast, direct prompt, first choice)
- "ZeroBounce — Best Overall for Mid-Market ... Choose ZeroBounce if you want the safest bet with proven mid-market fit" (Kimi K2, direct prompt, first choice)

## What the models said about DeBounce

- "Best for: Cost-sensitive users (accuracy may vary)" (Mistral Small, comparative prompt, soft negative)
- "DeBounce: 94.0% real accuracy" (Kimi K2, negative prompt, soft negative)
- "For most businesses, DeBounce or MyEmailVerifier offer the best balance of cost, accuracy, and features." (MiniMax M2.5, budget prompt, first choice)
- "DeBounce – Best Overall Value ... one of the cheapest rates available" (Kimi K2, budget prompt, first choice)
- "DeBounce — Best for Bulk List Cleaning ... aggressive bulk pricing while maintaining industry-standard accuracy" (Qwen 3.7 Flash, budget prompt, alternative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.