IFEval: Instruction-Following Evaluation
IFEval measures LLM ability to follow verifiable formatting instructions (e.g., output length, keyword inclusion, capitalization) with exact-match checking.
Models ranked
12
tracked on this benchmark
Score band
94.8 – 38.5
best → lowest tracked
Snapshot trend
+3.87
Apr 29 → Jun 26 · 1 models
Leaderboard
Tracked models ranked by Instruction Following Score (higher is better).
Notes: Official Intern Science model card reports Agents-A1 at 94.82 on IFEval. Evaluator/source: Intern Science self-reported model-card/project benchmark table. Public harness details are not fully reproducible from the seed row. Confidence: medium for reported value, low-medium for reproducibility. Recommended seed value: 94.82.
How to read this benchmark
This benchmark scores models where higher is better. Use scores for directional filtering and shortlisting, not universal quality ranking; then validate pricing, context window, provider availability, and fit for your workload.
Trust this score when
- There is a fresh timestamped snapshot (or multiple snapshots) for this benchmark.
- The model list covers the same version family you can actually deploy today.
- Top candidates overlap with your required routing and feature requirements.
Be cautious when
- There is only one benchmark snapshot or the dataset appears stale.
- The benchmark metric direction is opposite of your decision objective.
- The score difference between options is narrow and likely within implementation variance.
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Last reviewed: Apr 15, 2026