LLM Stats (ComplexFuncBench): leaderboard
Complex function-calling benchmark with multi-step, nested, and parallel tool-use scenarios requiring structured argument generation and chained execution.
Metric: Score (%). Source: llm-stats.com. Saturation forecast: Estimated already saturated. 7 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | GPT-4o | 66.5 | #343 |
| 2 | GPT-4.1 | 65.5 | #248 |
| 3 | GPT-4.5 | 63 | #274 |
| 4 | GPT-4.1 Mini | 49.3 | #355 |
| 5 | O3 Mini | 17.6 | #272 |
| 6 | GPT-4.1 Nano | 5.7 | #731 |
No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.
Interactive version: theaggregate.ai/benchmark?slug=llm-stats-complexfuncbench · How It Works · Data refreshed daily, snapshot 2026-10-20.