Skip to content
aiqbench

Stepfun · model passport

Step 2 16k Exp 202412

step-2-16k-exp-202412
  • Cloud only
  • Proprietary licence
  • Released 2026-10-15(first seen on LMArena)
4/27axes covered
Overall · LMArena
1,333#225 of 396
Best percentile
43.7Instruction following
Cohort standing
46.2median 60.8

What the data says

Benchmarked on 4 of 27 tracked axes. Every figure below is the model's own published result on that board.

Uneven: 0.5 percentile points between its best and worst axis — 43.7 pct on Instruction following versus 43.2 pct on Hard prompts.

  • Instruction following43.7 pct1,315Verify →
  • Overall43.4 pct1,333Verify →
  • Coding43.2 pct1,370Verify →
  • Hard prompts43.2 pct1,338Verify →
  • WebDev ArenaNot benchmarked
  • Vision ArenaNot benchmarked
  • Factuality ArenaNot benchmarked
  • Search ArenaNot benchmarked
  • Document ArenaNot benchmarked
  • Agent ArenaNot benchmarked
  • GPQA DiamondNot benchmarked
  • AIME (math)Not benchmarked
  • FrontierMathNot benchmarked
  • SimpleQA VerifiedNot benchmarked
  • ARC-AGI-2Not benchmarked
  • Humanity's Last ExamNot benchmarked
  • SimpleBenchNot benchmarked
  • LiveBenchNot benchmarked
  • BFCL v4 (function calling)Not benchmarked
  • SWE-bench Verified (live board)Not benchmarked
  • Terminal-Bench 4.0Not benchmarked
  • MMLU-Pro (Artificial Analysis)Not benchmarked
  • LiveCodeBench (Artificial Analysis)Not benchmarked
  • IFBench (Artificial Analysis)Not benchmarked
  • HHEM Hallucination (Vectara)Not benchmarked
  • SWE-bench VerifiedNot benchmarked
  • Terminal-BenchNot benchmarked

Percentiles are the model's standing within each board's own population. Axes marked "not benchmarked" have no published result for this model — that is an absence of data, not a low score.

  • step-2-16k-exp-202412 stands at 46.2 (raw mean 43.4) — measured on 4 of 27 axes.

    standingtemplateVerify →

  • step-2-16k-exp-202412 stands at 46.2 versus a cohort median of 60.8 across 168 models released within 180 days — below the peer median.

    cohorttemplateVerify →

Every claim is a computed fact from the current board data, phrased by a low-temperature model call and rejected by a validation gate if any number is not in the source row. How the leaderboards work →