---
title: "StepFun Open Platform API | Ethical Stack"
url: https://ethicalstack.ai/providers/stepfun-api/
catalog_version: f6baff2119d0e9158520da7fbe4232011dac79f25bd08757436d7a1dbd593db2
---

# StepFun Open Platform API

The Open Platform provides language, image, and audio model access through one API key, plus a separate monthly Step Plan option.

Canonical profile: https://ethicalstack.ai/providers/stepfun-api/

Scope: StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Published overall: 3; 5/6 dimensions rated.

Round the equal-weight mean of available numerical ratings to one decimal; require at least four of six for an overall score. BDS status stays outside the mean; for eligible profiles, a boycott target caps the final score at 2/10 and a pressure target subtracts one point (minimum 1). Not listed and not checked do not adjust the score.

## Energy practices

Finding: 1/10

Assessment: https://ethicalstack.ai/providers/stepfun-api/#energy

This grades published energy practices, not the service’s actual footprint.

Reason: 1 + 0 reporting + 0 electricity + 0 controls = 1/10. This grades documented practices and transparency.

Argument: The reviewed materials define the StepFun hosted model API and its functions but provide no service-specific reporting on electricity, emissions, water, sourcing, or resource-reduction controls. Missing measurements do not establish high consumption.

Type: argument; confidence: low

Scope (dimension): StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: No comparable service-level electricity, emissions, water, location mix, or independently reviewed footprint is established in these sources.

```json
{
  "method": "practices-transparency-v1",
  "scope": "StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.",
  "components": {
    "disclosure": {
      "score": 0,
      "reason": "No service-specific operating boundary or footprint disclosure appears in the reviewed product material.",
      "sourceUrls": [
        "https://platform.stepfun.com/",
        "https://platform.stepfun.com/legal/user-agreement.html",
        "https://platform.stepfun.com/legal/privacy-policy.html"
      ]
    },
    "electricity": {
      "score": 0,
      "reason": "No route-specific clean-electricity sourcing or hourly power evidence is established.",
      "sourceUrls": [
        "https://platform.stepfun.com/",
        "https://platform.stepfun.com/legal/user-agreement.html",
        "https://platform.stepfun.com/legal/privacy-policy.html"
      ]
    },
    "demand": {
      "score": 0,
      "reason": "No route-specific measured efficiency or documented resource-reduction control is established.",
      "sourceUrls": [
        "https://platform.stepfun.com/",
        "https://platform.stepfun.com/legal/user-agreement.html",
        "https://platform.stepfun.com/legal/privacy-policy.html"
      ]
    }
  },
  "actualImpactMeasured": false
}
```

- [StepFun Open Platform overview](https://platform.stepfun.com/) (primary; checked 2026-10-24)

- [StepFun Open Platform user agreement](https://platform.stepfun.com/legal/user-agreement.html) (primary; checked 2026-10-24)

- [StepFun Open Platform privacy policy](https://platform.stepfun.com/legal/privacy-policy.html) (primary; checked 2026-10-24)

## Training data

Finding: Depends on the model

Assessment: https://ethicalstack.ai/providers/stepfun-api/#training-rights

The hosted route does not identify one fixed model and corpus.

Reason: Training-data rights depend on the exact model and version selected through this hosted route; no single corpus assessment applies.

Argument: This StepFun hosted model API can expose multiple models or change its model selection over time. The product page is not a source-specific training-data and permissions record for every model served through the route.

Type: argument; confidence: medium

Scope (profile): StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: Select the exact model and version, then review its training sources, permissions, creator controls, and any API-specific data terms.

```json
{
  "method": "training-rights-evidence-v1",
  "scope": "The stated training release or selected model",
  "components": null,
  "routeDependency": "Training-data rights depend on the exact model and version selected through this hosted route; no single corpus assessment applies.",
  "modelReference": null
}
```

- [StepFun Open Platform overview](https://platform.stepfun.com/) (primary; checked 2026-10-24)

- [StepFun Open Platform user agreement](https://platform.stepfun.com/legal/user-agreement.html) (primary; checked 2026-10-24)

- [StepFun Open Platform privacy policy](https://platform.stepfun.com/legal/privacy-policy.html) (primary; checked 2026-10-24)

## Your data & privacy

Finding: 4/10

Assessment: https://ethicalstack.ai/providers/stepfun-api/#privacy

The platform privacy policy describes API account, key, subscription, and service-use information, but the prompt retention schedule is not established here.

Reason: Published platform collection purposes support a limited middle-band rating, while model-call retention and reuse remain unclear.

Argument: StepFun’s platform privacy policy explains collection tied to API-key management, service usage, subscriptions, and account activity. It is a platform-level policy rather than a per-model retention or training schedule, so the route gives developers some processing transparency without resolving how long prompts are kept.

Type: argument; confidence: medium

Scope (profile): StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: Exact prompt retention, model-training use, human review, deletion timing, and any overseas endpoint differences were not established in the cited material.

- [StepFun Open Platform privacy policy](https://platform.stepfun.com/legal/privacy-policy.html) (primary; checked 2026-10-24)

- [StepFun Open Platform user agreement](https://platform.stepfun.com/legal/user-agreement.html) (primary; checked 2026-10-24)

## Openness

Finding: 2/10

Assessment: https://ethicalstack.ai/providers/stepfun-api/#openness

This is a hosted product route; its interface documentation does not disclose the hosted model implementation or grant access to its weights.

Reason: A hosted interface is documented, but source code, training artifacts, and route-specific downloadable weights are not established in these sources.

Argument: The reviewed StepFun hosted model API materials describe a hosted service, without publishing the service implementation or checkpoint weights for this route. Its openness rating concerns access to this product surface, not any separately released model family.

Type: argument; confidence: medium

Scope (profile): StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: The exact model checkpoint and any route-specific release artifacts may change; this rating covers the named service route.

- [StepFun Open Platform overview](https://platform.stepfun.com/) (primary; checked 2026-10-24)

- [StepFun Open Platform user agreement](https://platform.stepfun.com/legal/user-agreement.html) (primary; checked 2026-10-24)

- [StepFun Open Platform privacy policy](https://platform.stepfun.com/legal/privacy-policy.html) (primary; checked 2026-10-24)

## Worker protections

Finding: 1/10

Assessment: https://ethicalstack.ai/providers/stepfun-api/#labour

No model-specific worker safeguards are established for StepFun in the reviewed model sources.

Reason: 1 base + 0 conditions + 0 worker voice/remedy + 0 evidence/follow-through = 1/10; this is a disclosure finding, not proof of abuse.

Argument: The model release pages describe weights and technical properties, not conditions for employees, data annotators, evaluators, moderators, or infrastructure contractors. This is a source-bounded disclosure gap, not evidence of mistreatment. This entry carries the same developer/operator finding to StepFun Open Platform API; it does not establish that this product was deployed under every cited relationship.

Type: argument; confidence: low

Scope (dimension): StepFun: the documented developer/operator record, not proof of deployment of StepFun Open Platform API.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: Worker locations, pay and conditions, supplier coverage, voice mechanisms, labor audits, and remediation outcomes are not established by these model-release sources.

```json
{
  "method": "worker-safeguards-evidence-v1",
  "entity": "models/step-3-7-flash",
  "company": "",
  "scope": "The named developer or operator",
  "components": {
    "conditions": {
      "score": 0,
      "reason": "No worker-level conditions or supply-chain safeguards are established in this model-family source set. This is a disclosure gap, not proof of mistreatment.",
      "sourceUrls": [
        "https://huggingface.co/stepfun-ai/Step-3.7-Flash",
        "https://huggingface.co/stepfun-ai/models"
      ]
    },
    "voice": {
      "score": 0,
      "reason": "The model sources do not document a worker voice or remedy mechanism for data, evaluation, or infrastructure labor.",
      "sourceUrls": [
        "https://huggingface.co/stepfun-ai/Step-3.7-Flash",
        "https://huggingface.co/stepfun-ai/models"
      ]
    },
    "assurance": {
      "score": 0,
      "reason": "No independent worker-level audit or remediation outcome is established in the reviewed model sources.",
      "sourceUrls": [
        "https://huggingface.co/stepfun-ai/Step-3.7-Flash",
        "https://huggingface.co/stepfun-ai/models"
      ]
    }
  },
  "disclosureLimited": true
}
```

- [Official model card or model release repository](https://huggingface.co/stepfun-ai/Step-3.7-Flash) (primary; checked 2026-10-24)

- [Official model card or model release repository](https://huggingface.co/stepfun-ai/models) (primary; checked 2026-10-24)

## Military ties

Finding: 7/10

Assessment: https://ethicalstack.ai/providers/stepfun-api/#military-contracts

No route-specific military relationship or end-use oversight was established for this StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded..

Reason: 7 base + 0 safeguard adjustment = 7/10 (0 of 9 safeguard points; every 3 adds 1). No military relationship was established in the cited sources. This ranks above known defense ties without claiming a verified clean record.

Argument: The reviewed StepFun Open Platform API materials describe user access, features, or account rules but do not establish a military customer, military deployment, or a model-specific restriction on military use. This route finding does not resolve the wider company’s government work.

Type: argument; confidence: low

Scope (profile): StepFun Open Platform API and its hosted model services; the consumer assistant and downloadable model weights are excluded.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: A separate, current company-level review is needed for defense contracts; downstream deployments and any customer-specific safeguards are not established here.

```json
{
  "method": "military-ties-priority-v2",
  "entity": "providers/stepfun-api",
  "company": "",
  "scope": "The named developer or operator",
  "components": {
    "restrictions": {
      "score": 0,
      "reason": "The cited route terms do not establish a specific restriction on military or surveillance use.",
      "sourceUrls": [
        "https://platform.stepfun.com/"
      ]
    },
    "oversight": {
      "score": 0,
      "reason": "The cited route terms do not establish route-level enforcement of military end-use restrictions.",
      "sourceUrls": [
        "https://platform.stepfun.com/"
      ]
    },
    "transparency": {
      "score": 0,
      "reason": "The cited route material does not disclose a military customer or deployment for this route.",
      "sourceUrls": [
        "https://platform.stepfun.com/"
      ]
    }
  },
  "disclosureLimited": true,
  "relationship": "not-established",
  "relationshipReason": "The cited StepFun Open Platform API documentation covers product/API terms, but does not identify a military customer, deployment, or end-use restriction.",
  "score": 7,
  "baseScore": 7,
  "safeguardPoints": 0,
  "safeguardAdjustment": 0,
  "rawScore": 7,
  "cap": null
}
```

- [StepFun Open Platform overview](https://platform.stepfun.com/) (primary; checked 2026-10-24)

## BDS targets

Finding: Not listed

Assessment: https://ethicalstack.ai/providers/stepfun-api/#israel-palestine

StepFun is not named in the two official BNC campaign lists checked. This is a limited list check, not BDS approval.

Reason: Campaign category, excluded from numerical scoring.

Argument: The official BNC consumer boycott/pressure guide and No Tech campaign page do not name StepFun among their current targets. BDS uses selective campaigns, so absence from these lists is neutral and does not establish a clean record or approval. This entry carries the same developer/operator finding to StepFun Open Platform API; it does not establish that this product was deployed under every cited relationship.

Type: argument; confidence: medium

Scope (dimension): StepFun: the documented developer/operator record, not proof of deployment of StepFun Open Platform API.

Research reviewed: not recorded; evidence date: not recorded

Unknowns: This check covers only named targets in the two cited BNC campaigns; it does not cover all BDS campaigns, local groups, investments, suppliers, or downstream hosts. Lists and ownership may change.

- [BNC Guide to BDS Boycott and Priority Targeting](https://bdsmovement.net/Guide-to-BDS-Boycott) (primary; checked 2026-10-24)

- [BNC No Tech for Oppression, Apartheid or Genocide](https://bdsmovement.net/no-tech-oppression-apartheid-or-genocide) (primary; checked 2026-10-24)

## Reading the evidence

- Assessments are provisional editorial judgments. Cite the profile and the underlying sources, and retain confidence, scope and unknowns.

- Unknown, not-applicable and model-dependent are different states. Missing evidence does not establish good or bad conduct.

- Company-level evidence does not establish use of a particular product or model. Account plan, model, host and route can change an assessment.

- Energy scores describe documented practices and transparency, not measured request emissions. Zero component points can mean an evidence gap.

- Published overall scores require at least four of six numerical dimensions. Preserve coverage and BDS adjustments; BDS itself is categorical.

- No named BDS target found is limited to the reviewed campaign sources and is not approval. Personalized priorities do not change the published overall score.

- Review and source-check dates describe the research, not this deployment. Fetch current primary sources when the decision requires current verification.

Methodology: https://ethicalstack.ai/methodology/