RLTasksby ulam.ai
Models / StepFun

StepFun / MODEL EVIDENCE

Step 5 Preview

44 benchmarks · 52 observations · 46 sources · released 2026-09-18

Scores at a glance

44 benchmarks · large dot: Step 5 Preview; small dots: closest models where reported

AA-3D ↗853.51 Elo
572.551198.83

Step 5 Preview · AA-3D · Elo ↗

SciCode ↗58.91%
42.9466.9

Step 5 Preview · SciCode · AA implementation ↗

MMMU-Pro ↗76.36%
73.4787.69

Step 5 Preview · MMMU-Pro · AA implementation ↗

CritPt ↗20.86%
4.5732.86

Step 5 Preview · CritPt · original ↗

Closest models by score

Similar positions on shared benchmark leaderboards. Smaller gaps are closer.

20.2 percentile-point gap

38 of 42 shared benchmark comparisons

How similarity is measured

Mean absolute gap in percentile positions on shared benchmark settings; lower is closer. At least 60% overlap is required, with a minimum of three when available. Independent evaluations are used when there are at least three; otherwise published report comparisons are used. Repeated model observations within one setting are averaged before ranking. Writing-style traits and composite indices are excluded. This describes similarity, not an overall quality ranking.

Filter comparisons to this model →

Sources

Every plotted observation links to its evaluation. Reported configurations, benchmark versions and task subsets can differ; similarity describes shared scores, not training lift.

  1. Arena leaderboard — WebDev evaluation ↗

    Arena

  2. AA-3D: Interactive 3D Experience Benchmark | Artificial Analysis ↗

    Artificial Analysis

  3. AA-AnalystAgent Benchmark | Artificial Analysis ↗

    Artificial Analysis

  4. AA-Briefcase v1.1: Agentic Knowledge Work Benchmark | Artificial Analysis ↗

    Artificial Analysis

  5. APEX-Agents-AA Benchmark | Artificial Analysis ↗

    Artificial Analysis

  6. Artificial Analysis Intelligence Index v5.0 — Artificial Analysis ↗

    Artificial Analysis

  7. AA-LCR v1.1: Long Context Reasoning Benchmark | Artificial Analysis ↗

    Artificial Analysis

  8. AutomationBench-AA: Agentic SaaS Workflow Benchmark | Artificial Analysis ↗

    Artificial Analysis

  9. CritPt Benchmark | Artificial Analysis ↗

    Artificial Analysis

  10. CritPt v2 Benchmark | Artificial Analysis ↗

    Artificial Analysis

  11. CritPt v2 — Hard Subset — Artificial Analysis ↗

    Artificial Analysis

  12. EnterpriseOps-Gym-AA Benchmark | Artificial Analysis ↗

    Artificial Analysis

  13. FrontierCode 1.1 Benchmark | Artificial Analysis ↗

    Artificial Analysis

  14. FrontierCode 2.0 Benchmark — Artificial Analysis ↗

    Artificial Analysis

  15. GDP.pdf Benchmark | Artificial Analysis ↗

    Artificial Analysis

  16. GDPval-AA v2.1 Benchmark | Artificial Analysis ↗

    Artificial Analysis

  17. HLE-Diamond Benchmark — Artificial Analysis ↗

    Artificial Analysis

  18. Humanity's Last Exam Benchmark | Artificial Analysis ↗

    Artificial Analysis

  19. ITBench-AA Benchmark | Artificial Analysis ↗

    Artificial Analysis

  20. MLCR-AA: Medical Long Context Reasoning Benchmark | Artificial Analysis ↗

    Artificial Analysis

  21. MMMU-Pro Benchmark | Artificial Analysis ↗

    Artificial Analysis

  22. AA-Omniscience v1.1: Knowledge and Hallucination Benchmark — Artificial Analysis ↗

    Artificial Analysis

  23. SciCode Benchmark | Artificial Analysis ↗

    Artificial Analysis

  24. Terminal-Bench-Science 0.1 Benchmark | Artificial Analysis ↗

    Artificial Analysis

  25. Terminal-Bench 4.0 Benchmark | Artificial Analysis ↗

    Artificial Analysis

  26. BioMysteryBench — evaluation methodology and results ↗

    Vals AI · 2026

  27. Code Migration v1 — evaluation methodology and results ↗

    Vals AI · 2026

  28. Code Migration — evaluation methodology and results ↗

    Vals AI · 2026

  29. Excel Modeling Benchmark v1 — evaluation methodology and results ↗

    Vals AI · 2026

  30. Excel Modeling Benchmark — evaluation methodology and results ↗

    Vals AI · 2026

  31. Finance Agent v2 — evaluation methodology and results ↗

    Vals AI · 2026

  32. Finance Agent — evaluation methodology and results ↗

    Vals AI · 2026

  33. Vals Finance Index — evaluation methodology and results ↗

    Vals AI · 2026

  34. Harvey's Legal Agent Benchmark v1 — evaluation methodology and results ↗

    Vals AI · 2026

  35. IOI — evaluation methodology and results ↗

    Vals AI · 2026

  36. Legal Research Bench — evaluation methodology and results ↗

    Vals AI · 2026

  37. MysteryMechanism — evaluation methodology and results ↗

    Vals AI · 2026

  38. ProofBench — evaluation methodology and results ↗

    Vals AI · 2026

  39. Public Benefits Bench — evaluation methodology and results ↗

    Vals AI · 2026

  40. Vals Science Index — evaluation methodology and results ↗

    Vals AI · 2026

  41. SRE Bench — evaluation methodology and results ↗

    Vals AI · 2026

  42. SWE-bench Multimodal — evaluation methodology and results ↗

    Vals AI · 2026

  43. Tax Agent Bench — evaluation methodology and results ↗

    Vals AI · 2026

  44. Terminal-Bench 4.0 — evaluation methodology and results ↗

    Vals AI · 2026

  45. Terminal-Bench-Science — evaluation methodology and results ↗

    Vals AI · 2026

  46. Vibe Code Bench — evaluation methodology and results ↗

    Vals AI · 2026

Names used in source tables

Step 5 Preview · Step 5 Preview (Mini-SWE-agent) · Step 5 Preview (OpenHands) · Step 5 Preview (high)