Ethical Stack.

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.

Score calculation

(1 + 4 + 2 + 1 + 7) ÷ 5 = 3.0

5 of six dimensions rated. Unrated dimensions are excluded from the average.

Full scoring method ↗
Setup details

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

What fits your needs

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

Fit

Connect to StepFun hosted text, image, or audio models using its platform key and API endpoint.

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Tradeoffs to expect

Tradeoff

The API is pay-per-use, while Step Plan is a separate subscription; access and billing differ by region.

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How to switch

Getting started

Register on the platform, create an API key, and use the documented regional endpoint and current model identifier.

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Practical questions

Route and billing

The platform separates API usage from the monthly Step Plan subscription; confirm region, model, and billing before migration.

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Energy practices

1/10↑

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

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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 don’t show high consumption.

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

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

Reporting0/3
No service-specific operating boundary or footprint disclosure appears in the reviewed product material.
Electricity sourcing0/3
No route-specific clean-electricity sourcing or hourly power evidence is established.
Resource controls0/3
No route-specific measured efficiency or documented resource-reduction control is established.

Water disclosure

Water reporting has not been assessed for this choice.

Training data

—Depends on the model↑

The hosted route does not identify one fixed model and training data.

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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.

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

Your data & privacy

4/10↑

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

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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.

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

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

Openness

2/10↑

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

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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.

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

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

Worker protections

1/10↑

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

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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. These findings concern the developer or operator. This product’s use in a particular deployment needs separate evidence.

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

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

Pay & conditions0/3
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.
Worker voice & remedy0/3
The model sources do not document a worker voice or remedy mechanism for data, evaluation, or infrastructure labor.
Evidence & follow-through0/3
No independent worker-level audit or remediation outcome is established in the reviewed model sources.
Workers rubric ↗

Military ties

7/10Not established↑

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..

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The reviewed StepFun Open Platform API materials describe user access, features, or account rules but don’t confirm 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.

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.

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

Use restrictions0/4
The cited route terms don’t spell out a specific restriction on military or surveillance use.
Enforcement & oversight0/3
The cited route terms don’t show route-level enforcement of military end-use restrictions.
Relationship disclosure0/2
The cited route material does not disclose a military customer or deployment for this route.

The cited StepFun Open Platform API documentation covers product/API terms, but does not identify a military customer, deployment, or end-use restriction.

Military rubric ↗

BDS targets

Not listed↑

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

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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 should not be read as a clean record or approval. These findings concern the developer or operator. This product’s use in a particular deployment needs separate evidence.

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.

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