ToolcallFormatIFBench
Qwen 3.6 Max (Preview) 86.1% Fading Models make tool calls that must follow format rules across many agent scaffolds and tool sets. Qwen uses it to measure real-world tool call following.
In-house. Defined in one footnote of the Qwen3.6-Max-Preview post.
Made by Qwen Team , Alibaba Group Released Apr 2026 Function calling Tasks kept private Last in a launch post Apr 2026 , dropped after it saturated
Last model added Apr 2026
- Level
- Everyday Most adults, without training
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
1
Model scored in lab cards
1
Launch post lists it, from 1 lab
Qwen 3.6 Max (Preview) leads with 86.1%
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Qwen 3.6 Max (Preview) | 86.1% | Apr 2026 | Model card |
The best score passed 85% in Apr 2026
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Reported by the lab in its model card
Labs headline it less often now, last in Apr 2026
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 20 Apr 2026 | Qwen 3.6 Max (Preview) | 86.1 | ToolcallFormatIFBench Real-World Toolcall Following |
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