| Metric | Value |
|---|---|
| Vellum wins | 19 |
| Arize Phoenix wins | 21 |
| Abstains (no tool) | 105 |
| Other tool chosen | 2530 |
| Decisive cases | 40 |
| Vellum win rate (unweighted) | 47.5% |
| 95% CI | 32.9% - 62.5% |
| Vellum win rate (weighted) | 47.5% |
Verified critics can leave comments here.
Verified critics can leave comments here.
| Model | Tier | Vellum | Arize Phoenix | None | Other | A rate |
|---|---|---|---|---|---|---|
| Devstral 2 2512 | Mid | 18 | 0 | 6 | 111 | 100% |
| Qwen3 Coder Next | Mid | 0 | 8 | 3 | 130 | 0% |
| MiniMax M2.7 | Frontier | 0 | 5 | 5 | 119 | 0% |
| GPT 5.4 Mini | Mid | 0 | 4 | 3 | 136 | 0% |
| Llama 4 Scout | Small | 0 | 2 | 7 | 122 | 0% |
| Mistral Small 4 | Mid | 0 | 2 | 2 | 132 | 0% |
| MiMo V2 Pro | Frontier | 1 | 0 | 8 | 123 | 100% |
| Claude Haiku 4.5 | Small | 0 | 0 | 1 | 136 | n/a |
| Claude Opus 4.6 | Frontier | 0 | 0 | 0 | 132 | n/a |
| Claude Opus 4.8 | Frontier | 0 | 0 | 1 | 11 | n/a |
| Claude Sonnet 4.6 | Frontier | 0 | 0 | 1 | 143 | n/a |
| DeepSeek R1 0528 | Frontier | 0 | 0 | 7 | 137 | n/a |
| DeepSeek V3.2 | Mid | 0 | 0 | 22 | 106 | n/a |
| DeepSeek V4 Flash | Mid | 0 | 0 | 1 | 11 | n/a |
| DeepSeek V4 Pro | Frontier | 0 | 0 | 1 | 11 | n/a |
| Gemini 2.5 Flash | Small | 0 | 0 | 1 | 126 | n/a |
| Gemini 2.5 Pro | Frontier | 0 | 0 | 9 | 135 | n/a |
| Gemini 3.5 Flash | Small | 0 | 0 | 1 | 11 | n/a |
| GLM 5 Turbo | Frontier | 0 | 0 | 19 | 113 | n/a |
| GLM 5.2 | Frontier | 0 | 0 | 0 | 12 | n/a |
| GPT 5.3 Codex | Frontier | 0 | 0 | 0 | 144 | n/a |
| GPT 5.4 | Frontier | 0 | 0 | 0 | 132 | n/a |
| GPT 5.5 | Frontier | 0 | 0 | 0 | 12 | n/a |
| Kimi K2.5 | Frontier | 0 | 0 | 3 | 116 | n/a |
| Kimi K2.7 Code | Frontier | 0 | 0 | 1 | 11 | n/a |
| Llama 4 Maverick | Frontier | 0 | 0 | 2 | 135 | n/a |
| MiMo V2.5 Pro | Frontier | 0 | 0 | 0 | 12 | n/a |
| MiniMax M3 | Frontier | 0 | 0 | 1 | 11 | n/a |
| Prompt | Tier | Vellum | Arize Phoenix | None | Other | A rate |
|---|---|---|---|---|---|---|
| ai-support-agent-platform | Intermediate | 11 | 1 | 5 | 411 | 92% |
| ai-support-agent-platform | Beginner | 4 | 7 | 66 | 354 | 36% |
| ai-revenue-ops-copilot | Beginner | 2 | 6 | 10 | 412 | 25% |
| ai-revenue-ops-copilot | Intermediate | 2 | 3 | 4 | 415 | 40% |
| ai-revenue-ops-copilot | Advanced | 0 | 4 | 2 | 413 | 0% |
| ai-agent-application | Intermediate | 0 | 0 | 0 | 20 | n/a |
| ai-agent-application | Advanced | 0 | 0 | 0 | 18 | n/a |
| ai-agent-application | Beginner | 0 | 0 | 5 | 15 | n/a |
| ai-engineering-workflow | Advanced | 0 | 0 | 0 | 18 | n/a |
| ai-engineering-workflow | Beginner | 0 | 0 | 8 | 12 | n/a |
| ai-engineering-workflow | Intermediate | 0 | 0 | 0 | 17 | n/a |
| ai-support-agent-platform | Advanced | 0 | 0 | 5 | 425 | n/a |
