MCPGen - Tool Creation (Individual Pass): leaderboard
Metric: Individual pass rate (%; share of the 911 withheld workflow tools whose generated implementation passes its tool-level tests when substituted alone; single-turn generation, temperature 0, 100 executable MCP projects from 16 domains). Source: arxiv.org. Saturation forecast: Around 2031. 11 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Sonnet 4.5 | 63.8 |
| 2 | Claude Haiku 4.5 (20251001) | 62.3 |
| 3 | Qwen 3 Coder 30B A3B Instruct | 58.5 |
| 4 | GPT-5.1 | 58.3 |
| 5 | O3 | 56.7 |
| 6 | Gemini 3 Pro (Preview) | 53.5 |
| 7 | GPT-4o Mini | 53.1 |
| 8 | GPT-5.2 | 52.2 |
| 9 | Gemini 3 Flash (Preview) | 41.3 |
| 10 | Qwen 3 Next 80B A3B Instruct | 40.1 |
| 11 | MiniMax-M2.1 | 39.3 |
Interactive version: theaggregate.ai/benchmark?slug=mcpgen-tool-creation-individual-pass · How It Works · Data refreshed daily, snapshot 2026-09-26.