APIFlow-Bench 1.0 - 10-Subtask Chain: leaderboard

Postman's APIFlow-Bench 1.0 measures whether agents complete long, dependent REST API workflows (arXiv 2608.29128v1). This board covers the 10-subtask chain set (12 tasks); pass rate is passed over all trials, 0-100, higher is better, and refusals and abstentions count as failures. From the live leaderboard's overview-chain10 page.

Metric: Pass Rate (%). Source: www.postman.com. Saturation forecast: Not forecast. 24 models tracked.

Top models

#ModelScoreOverall rank
1Claude Sonnet 4.675#94
2GPT-5.575#33
3DeepSeek V4 Pro75#112
4GPT-5.6 Sol75#22
5Kimi K2.675#113
6DeepSeek V4 Flash75#155
7Qwen 3.6 Plus75#124
8MiniMax-M2.775#270
9Claude Haiku 4.5 (20251001)75#264
10GLM-5.275#80
11GPT-OSS-20B73.33#523
12Claude Sonnet 573.33#65
13Qwen 3.7 Plus73.33#98
14Kimi K2.7 Code73.33#95
15Kimi K371.67#35

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

Interactive version: theaggregate.ai/benchmark?slug=apiflow-bench-1-0-10-subtask-chain · How It Works · Data refreshed daily, snapshot 2026-11-05.