| Metric | Value |
|---|---|
| Mailgun wins | 294 |
| Postmark wins | 864 |
| Abstains (no tool) | 132 |
| Other tool chosen | 9948 |
| Decisive cases | 1158 |
| Mailgun win rate (unweighted) | 25.4% |
| 95% CI | 23.0% - 28.0% |
| Mailgun win rate (weighted) | 25.4% |
Verified critics can leave comments here.
Verified critics can leave comments here.
| Model | Tier | Mailgun | Postmark | None | Other | A rate |
|---|---|---|---|---|---|---|
| GPT 5.3 Codex | Frontier | 1 | 196 | 2 | 389 | 1% |
| Mistral Small 4 | Mid | 3 | 147 | 0 | 432 | 2% |
| Gemini 2.5 Pro | Frontier | 37 | 107 | 13 | 430 | 26% |
| Claude Opus 4.6 | Frontier | 39 | 73 | 0 | 329 | 35% |
| Llama 4 Maverick | Frontier | 89 | 0 | 0 | 499 | 100% |
| Claude Sonnet 4.6 | Frontier | 28 | 52 | 0 | 508 | 35% |
| Qwen3 Coder Next | Mid | 0 | 66 | 7 | 513 | 0% |
| GPT 5.4 Mini | Mid | 0 | 58 | 6 | 524 | 0% |
| Devstral 2 2512 | Mid | 17 | 32 | 0 | 496 | 35% |
| GPT 5.5 | Frontier | 1 | 42 | 1 | 101 | 2% |
| Gemini 2.5 Flash | Small | 14 | 22 | 1 | 404 | 39% |
| Claude Opus 4.8 | Frontier | 0 | 23 | 0 | 124 | 0% |
| Llama 4 Scout | Small | 19 | 0 | 27 | 540 | 100% |
| MiMo V2 Pro | Frontier | 13 | 5 | 2 | 421 | 72% |
| MiniMax M2.7 | Frontier | 8 | 6 | 7 | 418 | 57% |
| GPT 5.4 | Frontier | 5 | 7 | 1 | 428 | 42% |
| DeepSeek V4 Pro | Frontier | 5 | 4 | 2 | 136 | 56% |
| DeepSeek V3.2 | Mid | 1 | 7 | 3 | 423 | 13% |
| Gemini 3.5 Flash | Small | 5 | 1 | 0 | 140 | 83% |
| Kimi K2.5 | Frontier | 0 | 6 | 14 | 417 | 0% |
| DeepSeek V4 Flash | Mid | 3 | 1 | 3 | 137 | 75% |
| GLM 5.2 | Frontier | 2 | 2 | 0 | 143 | 50% |
| MiniMax M3 | Frontier | 0 | 4 | 0 | 142 | 0% |
| MiMo V2.5 Pro | Frontier | 2 | 0 | 1 | 142 | 100% |
| Kimi K2.7 Code | Frontier | 1 | 1 | 0 | 144 | 50% |
| Claude Haiku 4.5 | Small | 1 | 0 | 16 | 567 | 100% |
| DeepSeek R1 0528 | Frontier | 0 | 1 | 7 | 580 | 0% |
| GLM 5 Turbo | Frontier | 0 | 1 | 19 | 421 | 0% |
| Prompt | Tier | Mailgun | Postmark | None | Other | A rate |
|---|---|---|---|---|---|---|
| blog-platform-cms | Beginner | 164 | 2 | 31 | 329 | 99% |
| saas-application | Advanced | 0 | 122 | 29 | 385 | 0% |
| blog-platform-cms | Intermediate | 94 | 12 | 2 | 427 | 89% |
| online-learning-platform | Advanced | 1 | 105 | 7 | 424 | 1% |
| ecommerce-store | Advanced | 19 | 81 | 1 | 436 | 19% |
| job-board | Advanced | 0 | 86 | 1 | 450 | 0% |
| blog-platform-cms | Advanced | 14 | 70 | 3 | 448 | 17% |
| saas-application | Beginner | 0 | 83 | 2 | 452 | 0% |
| restaurant-reservation-system | Advanced | 0 | 57 | 5 | 475 | 0% |
| saas-application | Intermediate | 0 | 45 | 4 | 488 | 0% |
| multi-tenant-crm | Advanced | 0 | 43 | 4 | 489 | 0% |
| restaurant-reservation-system | Beginner | 0 | 30 | 9 | 498 | 0% |
| ecommerce-store | Intermediate | 1 | 27 | 1 | 508 | 4% |
| multi-tenant-crm | Intermediate | 0 | 25 | 1 | 506 | 0% |
| ecommerce-store | Beginner | 0 | 22 | 16 | 497 | 0% |
| restaurant-reservation-system | Intermediate | 0 | 20 | 10 | 507 | 0% |
| online-learning-platform | Beginner | 0 | 17 | 2 | 517 | 0% |
| online-learning-platform | Intermediate | 0 | 7 | 1 | 527 | 0% |
| multi-tenant-crm | Beginner | 1 | 5 | 3 | 517 | 17% |
| job-board | Beginner | 0 | 4 | 0 | 532 | 0% |
| job-board | Intermediate | 0 | 1 | 0 | 536 | 0% |
