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
17
tracked on this benchmark
Score band
96.8 – 38.5
best → lowest tracked
Snapshot trend
+11.50
Oct 12 → Oct 14 · 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.
Notes: IFEval accuracy; JetBrains self-reported on HF model-index.
Notes: Scores from the released-checkpoint "after" table on the Hugging Face model card.
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