VitaBench-Noise (LongCat)
LongCat-Flash-Thinking-2601 20.5% Fading Agents run VitaBench life-service tasks after a pipeline injects instruction noise and tool failures into the environment. The score is the average over several noisy copies.
In-house robustness variant of VITA-Bench. Meituan says it will release the noise injection pipeline.
- Level
- Everyday Most adults, without training
- Scored
- Graded by a model A language model scores each response, usually against a rubric.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
LongCat-Flash-Thinking-2601 leads with 20.5%
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 | LongCat-Flash-Thinking-2601 | 20.5% | Jan 2026 | Model card |
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs headline it less often now, last in Jan 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 |
|---|---|---|---|
| 14 Jan 2026 | LongCat-Flash-Thinking-2601 | 20.5 | VitaBench-Noise (Avg@4) |
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 23 Jan 2026 | LongCat-Flash-Thinking-2601 technical report | 20.5 | VitaBench-Noise (Avg@4) (Table 2) | Robustness |
More in Tool use
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