GDPval Extended (Mercor held-out rubric score)
Professional Work
Mercor's held-out Extended twin of OpenAI's GDPval: 132 Mercor knowledge-work tasks graded by Mercor's rubric mean score. Like its public twin, Mercor's 213-task GDPval rubric score (gdpval-mercor-213-rubric, under gdpval), the rubric is undocumented and differs from GDPval's blind expert pairwise grading, so this is a diagnostic. Mercor does not publish the held-out tasks or say how they were drawn or written, so this is its own benchmark, not a component of the public one.
Top models (higher is better)
| Model | Score |
|---|---|
| Gemini 4 Argon | 76.4 |
| Claude Opus 5.5 | 75.8 |
| Claude Sonnet 5.5 | 70.9 |
| Claude Fable 5.1 | 68.7 |
| Claude Haiku 5.5 | 66.0 |
| Claude Fable 5 | 65.3 |
| GPT-6 Astra | 64.1 |
| Claude Opus 5 | 62.9 |
| Grok 4.6 | 61.8 |
| Gemini 3.8 Flash | 60.4 |
| Opus 4.8 | 58.9 |
| GPT-6 Sol | 58.7 |
| Gemini 3.7 Flash | 57.8 |
| Muse Spark 1.2 | 57.5 |
| Kimi K3 | 56.4 |
| Muse Spark 1.3 | 55.9 |
| GPT-5.5 | 54.5 |
| Sonnet 5 | 54.2 |
| Opus 4.7 | 53.8 |
| Opus 4.6 | 53.0 |
| Muse Spark 1.1 | 52.4 |
| Gemini 3.6 Flash | 52.2 |
| GPT-5.6 Sol Pro | 52.0 |
| Sonnet 4.6 | 51.0 |
| Grok 4.5 | 51.0 |
| GPT-6 Luna | 48.9 |
| GPT-5.4 | 48.0 |
| GLM-5.2 | 47.3 |
| GPT-5.6 Terra | 47.2 |
| GPT-5.6 Luna | 44.9 |
| Gemini 3.1 Pro Preview | 41.9 |
| Kimi K2.7 Code | 41.0 |
| Inkling | 39.5 |
| MiniMax M3 | 38.8 |
| Nemotron 3 Ultra 550B A55B (NVFP4) | 38.2 |
| Qwen3.5 397B A17B | 35.4 |
| MiniMax M2.7 | 32.4 |
| Gemini 3.5 Flash | 31.6 |
| Kimi K2 Thinking | 26.0 |