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Step 5 Preview

open weights
StepFun · released 2026-09-18 · 3 offers

Output 134 tokens/sFirst token 0.8 sContext 1M tokens

Top 1 cheapest providers (Adjusted $/task)

Within the active global provider, residency and confidentiality filters.

#ProviderAdjusted $/task
1Featherlessvia OpenRouter — Price via OpenRouter: OpenRouter's price for Featherless's endpoint (https://openrouter.ai/stepfun/step-5-preview/providers), collected 2026-11-03.

Composite

1 of 7 inputs6 radar axes: DesignArena's two boards share one

47.2

 Thin data · 1/7Based on only 1 of 7 Composite inputs — treat this rank as uncertain

dominance-adjusted from 65.3: a better-measured model that is at least as good on each of these inputs ranks above it

AA Coding v4.xCoding Agent v1.4AA IntelligenceAA AgenticEpoch ECISoftware ECIDesignArenaAA Intelligence: percentile 88

AA Coding v4.x —Coding Agent v1.4 —AA Intelligence 28.5AA Agentic —Epoch ECI —Software ECI —DesignArena —/—

Radar: percentile among all models measured on each input; a gap means not measured.

Benchmark sheet

42 of 319 registered benchmark versions · bars show the percentile among all models measured on each benchmark.

40 of 43 values are StepFun's own claims (†), not independent measurements; a matching independent result replaces a claim as soon as one exists.

Compare this model →

Agentic

  • AA-Briefcasedeveloper's claim1,417† self-reported by the developer

    AA-Briefcase published 2026-09-20 → · Vendor-reported by StepFun — AA-Briefcase result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Agents' Last Exam (ALE-CLI)developer's claim29.5%† self-reported by the developer

    Agents' Last Exam (ALE-CLI) published 2026-09-20 → · Vendor-reported by StepFun — Agents' Last Exam (ALE-CLI) result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Apex-Agentsdeveloper's claim37.8%† self-reported by the developer

    Apex-Agents published 2026-09-20 → · Vendor-reported by StepFun — Apex-Agents result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • AutomationBench-AAdeveloper's claim51.0%† self-reported by the developer

    AutomationBench-AA published 2026-09-20 → · Vendor-reported by StepFun — AutomationBench-AA result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • AutomationBench (public)developer's claim44.0%† self-reported by the developer

    AutomationBench (public) published 2026-09-20 → · Vendor-reported by StepFun — AutomationBench (public) result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • BrowseCompdeveloper's claim88.7%† self-reported by the developer

    BrowseComp published 2026-09-20 → · Vendor-reported by StepFun — BrowseComp result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Dracodeveloper's claim83.3%† self-reported by the developer

    Draco published 2026-09-20 → · Vendor-reported by StepFun — Draco result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • FinStepBench-LiveSearchdeveloper's claim74.5%† self-reported by the developer

    FinStepBench-LiveSearch published 2026-09-20 → · Vendor-reported by StepFun — FinStepBench-LiveSearch result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • HLE w/ toolsdeveloper's claim59.4%† self-reported by the developer

    HLE w/ tools published 2026-09-20 → · Vendor-reported by StepFun — HLE w/ tools result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • JobBenchdeveloper's claim59.0%† self-reported by the developer

    JobBench published 2026-09-20 → · Vendor-reported by StepFun — JobBench result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • OfficeQA Prodeveloper's claim60.3%† self-reported by the developer

    OfficeQA Pro published 2026-09-20 → · Vendor-reported by StepFun — OfficeQA Pro result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • PresentBenchdeveloper's claim76.8%† self-reported by the developer

    PresentBench published 2026-09-20 → · Vendor-reported by StepFun — PresentBench result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • SpeadSheet v2developer's claim29.4%† self-reported by the developer

    SpeadSheet v2 v2 → · Vendor-reported by StepFun — SpeadSheet v2 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • τ³-Bankingdeveloper's claim42.5%† self-reported by the developer

    τ³-Banking published 2026-09-20 → · Vendor-reported by StepFun — τ³-Banking result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Terminal-Bench v2.1developer's claim85.0%† self-reported by the developer

    Terminal-Bench v2.1 v2.1 → · Vendor-reported by StepFun — Terminal-Bench v2.1 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Terminal-Bench v4 v4.0developer's claim33.3%† self-reported by the developer

    Terminal-Bench v4 v4.0 → · Vendor-reported by StepFun — Terminal-Bench v4 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Coding

  • Artificial Analysis Coding Agent Index v1.53351.2%

    Artificial Analysis Coding Agent Index v1.5 v1.5 → · Claude Code — Measures coding-agent systems on DeepSWE v1.1, Terminal-Bench 4.0 and SWE-Atlas-QnA.

  • Artificial Analysis Coding Agent Index v2.04043.1%

    Artificial Analysis Coding Agent Index v2.0 v2.0 → · Claude Code — Measures coding-agent systems on FrontierCode v1.1 Main, Terminal-Bench 4.0 and SWE-Atlas-QnA-AA.

  • DeepSWE v1.1developer's claim67.7%† self-reported by the developer

    DeepSWE v1.1 v1.1 → · Vendor-reported by StepFun — DeepSWE v1.1 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • MLS-Bench-Litedeveloper's claim40.5%† self-reported by the developer

    MLS-Bench-Lite published 2026-09-20 → · Vendor-reported by StepFun — MLS-Bench-Lite result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • ProgramBench (Pass Rate)developer's claim80.5%† self-reported by the developer

    ProgramBench (Pass Rate) published 2026-09-20 → · Vendor-reported by StepFun — ProgramBench (Pass Rate) result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • RoadmapBenchdeveloper's claim54.3%† self-reported by the developer

    RoadmapBench published 2026-09-20 → · Vendor-reported by StepFun — RoadmapBench result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • SciCodedeveloper's claim58.9%† self-reported by the developer

    SciCode published 2026-09-20 → · Vendor-reported by StepFun — SciCode result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • StepCode-Bench-Dailydeveloper's claim64.9%† self-reported by the developer

    StepCode-Bench-Daily published 2026-09-20 → · Vendor-reported by StepFun — StepCode-Bench-Daily result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • StepCode-Bench-Generaldeveloper's claim65.0%† self-reported by the developer

    StepCode-Bench-General published 2026-09-20 → · Vendor-reported by StepFun — StepCode-Bench-General result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • StepCodeBenchdeveloper's claim49.0%† self-reported by the developer

    StepCodeBench published 2026-09-20 → · Vendor-reported by StepFun — StepCodeBench result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • SWE-Atlas-QnAdeveloper's claim63.6%† self-reported by the developer

    SWE-Atlas-QnA published 2026-09-20 → · Vendor-reported by StepFun — SWE-Atlas-QnA result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • SWE-Atlas-Test-writingdeveloper's claim50.8%† self-reported by the developer

    SWE-Atlas-Test-writing published 2026-09-20 → · Vendor-reported by StepFun — SWE-Atlas-Test-writing result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • SWE-Marathon v1.1 (Partial Score)developer's claim72.7%† self-reported by the developer

    SWE-Marathon v1.1 (Partial Score) v1.1 → · Vendor-reported by StepFun — SWE-Marathon v1.1 (Partial Score) result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Knowledge

  • FinStepBench-CorporateValuationdeveloper's claim60.6%† self-reported by the developer

    FinStepBench-CorporateValuation published 2026-09-20 → · Vendor-reported by StepFun — FinStepBench-CorporateValuation result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • FinStepBench-FinanceDRdeveloper's claim55.8%† self-reported by the developer

    FinStepBench-FinanceDR published 2026-09-20 → · Vendor-reported by StepFun — FinStepBench-FinanceDR result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • FrontierFinancedeveloper's claim66.4%† self-reported by the developer

    FrontierFinance published 2026-09-20 → · Vendor-reported by StepFun — FrontierFinance result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • GDPval-AA v2developer's claim1,571† self-reported by the developer

    GDPval-AA v2 v2 → · Vendor-reported by StepFun — GDPval-AA v2 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Long-context

  • AA-LCR v1.1developer's claim88.3%† self-reported by the developer

    AA-LCR v1.1 v1.1 → · Vendor-reported by StepFun — AA-LCR v1.1 result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Reasoning

  • CritPtdeveloper's claim20.9%† self-reported by the developer

    CritPt published 2026-09-20 → · Vendor-reported by StepFun — CritPt result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • GPQA Diamonddeveloper's claim93.5%† self-reported by the developer

    GPQA Diamond published 2026-09-20 → · Vendor-reported by StepFun — GPQA Diamond result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • HLEdeveloper's claim46.5%† self-reported by the developer

    HLE published 2026-09-20 → · Vendor-reported by StepFun — HLE result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • AA Intelligence Index v5.0 · snapshot-2026-11-034428.5

    AA Intelligence Index v5.0 · snapshot-2026-11-03 → · Published board — Artificial Analysis Intelligence Index v5.0. Models AA has not rescored on v5.0 are listed as estimates from their frozen v4.x value (isotonic fit over the models measured on both versions), never as measurements.

Safety/Alignment

  • CyberGymdeveloper's claim84.7%† self-reported by the developer

    CyberGym published 2026-09-20 → · Vendor-reported by StepFun — CyberGym result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Tool-use

  • MCP-Atlasdeveloper's claim85.6%† self-reported by the developer

    MCP-Atlas published 2026-09-20 → · Vendor-reported by StepFun — MCP-Atlas result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • Toolathlon-Verifieddeveloper's claim74.1%† self-reported by the developer

    Toolathlon-Verified published 2026-09-20 → · Vendor-reported by StepFun — Toolathlon-Verified result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Vision

  • GDP.pdfdeveloper's claim14.8%† self-reported by the developer

    GDP.pdf published 2026-09-20 → · Vendor-reported by StepFun — GDP.pdf result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

  • MMMU-Prodeveloper's claim76.0%† self-reported by the developer

    MMMU-Pro published 2026-09-20 → · Vendor-reported by StepFun — MMMU-Pro result as reported by StepFun in the Step-5 Preview launch table; this registry identity preserves the printed version or a dated snapshot when none was stated.

Missing coverage · 277 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

Token offers by platform · 1 offer (Adjusted $/task)

Click any underlined price to see how it is estimated and where each input comes from. How we calculate adjusted cost.

1 offer within the active global filters, 2 more outside them; “price n/a” means the provider serves the model but publishes no direct token price we could collect — no other channel's price is shown in its place.

OpenRouter (1)

Prices via OpenRouter — what OpenRouter charges for each provider's endpoint, not the provider's own direct price. Source: openrouter.ai/stepfun/step-5-preview/providers, collected 2026-11-03.

Featherless
Step 5 Preview — benchmarks & cost | Benchmark Heaven