SynthAPI Paper - ASTRA Informational: leaderboard

SynthAPI tests whether models can use unfamiliar APIs and complete tasks with tools, including AppWorld, ASTRA and function calling. Episode success (%).

Metric: Episode success (%). Source: arxiv.org. Saturation forecast: Around January 2027. 14 models tracked.

Top models

#ModelScoreOverall rank
1Qwen 3.5 27B82.7#186
2Qwen 3.5 9B74.2#387
3Qwen 3.5 4B60.3#496

No result here: #3 Claude Opus 5.5, #5 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=synthapi-paper-astra-informational · How It Works · Data refreshed daily, snapshot 2026-10-29.