> StepFun
StepFun Open Platform is the official developer platform of a Chinese AI unicorn, serving its Step-series multimodal models via an OpenAI-compatible API. It supports text, vision, and end-to-end speech models with tiered rate limits and a credits-based free allowance for new accounts.
// pros
- Official first-party platform with in-house Step-series multimodal models (text/vision/speech/image/audio)
- OpenAI-compatible API, callable directly with a key in clients like LobeHub/Cursor
- Generous free quota: 500K tokens on sign-up plus daily grants via the reward program
- Step 3 is open-sourced; vendor is public and trustworthy with low rug-pull risk
// cons
- Free quota is grant/trial-based; payment is required once exhausted or the promo ends
- The large daily free quota requires activating the collaboration-reward program (with conditions)
- The Step Plan subscription converts to paid after the 15-day trial
Classify as first-party-free. An official Chinese-vendor platform with an OpenAI-compatible API plus sign-up token grants — good for low-cost trials of domestic multimodal LLMs; note that it turns paid once grants run out.
community_reputation
Positive reputation: widely covered by Zhihu, IT Home, LobeHub, etc.; the official open-sourcing of Step 3 boosts credibility. As a first-party vendor platform, stability and compliance exceed anonymous relays.
imported analysis — independent third party, not Uprouter editorial · verify before relying on it
How we estimated this: the free allowance is converted to a dollar value using the provider’s own pay-as-you-go rates for the models a typical developer would reach for. When the allowance is metered in requests, tokens or minutes rather than dollars, we assume median usage of the cheapest capable model. Because assumptions are involved, the figure carries the est. flag — treat it as an order of magnitude, not a quote.
note: Starter ~500K free tokens per model; ~2M tokens/day after activating collaboration-reward program (~$15/mo at StepFun's own ~$0.2-0.6/1M pricing); Step Plan 15-day trial extendable via referrals. Now platform.stepfun.ai.
| Plan | Type | Monthly | Input /1M | Output /1M | Note |
|---|---|---|---|---|---|
| Free tier (source-reported) | free | — | — | — | New users receive ~500K tokens of free starter credit for each model on the platform; after activating the collaboration-reward program, daily free-call quota (~2M tokens) is granted. There is also a Step Plan (for agent/coding) with a 15-day free trial, extendable via referrals up to ~90 days. |
| step-3.5-flash | payg | — | $0.100 | $0.300 | Reasoning model pricing; supports cache hits at $0.02/1M input. |
| step-3.7-flash | payg | — | $0.200 | $1.15 | Multimodal reasoning model. |
| stepaudio-2.5-chat | payg | — | $1.50 | $3.50 | End-to-end speech model. |
Pricing normalized from public sources — always verify with the provider.
// model prices
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| Step-3 | — | — | — |
| Step-series text LLMs | — | — | — |
| Step-series multimodal/vision models | — | — | — |
| Step-series speech/audio/image models | — | — | — |
<a href="https://uprouter.online/s/platform-stepfun-com" target="_blank" rel="noopener"><img src="https://uprouter.online/badge/platform-stepfun-com.svg" alt="StepFun live status on UPROUTER.ONLINE" height="40"></a>Paste this into your README, docs or status page. The badge shows the same best-effort probe data as the directory, refreshes automatically, and links back to the full StepFun entry — no tracking, no scripts.
$ Does StepFun have a free tier?
Yes — StepFun offers a free tier that we value at roughly $15.00 in free credits (estimate — derived from rate-limited usage at pay-as-you-go prices). Always confirm current limits on StepFun's official pricing page — free tiers change without notice.
$ How much does StepFun cost per 1M tokens?
StepFun does not publish simple per-1M-token pricing (it may bill per request, per output, or via a subscription plan). Check their official pricing page for exact figures.
$ Is StepFun safe to use?
Uprouter rates StepFun as low risk. Official platform of a major Chinese AI foundation model developer. Provides transparent pricing, comprehensive documentation, and a clear tiered access system. Data handling follows standard commercial cloud provider practices. Risk ratings are editorial, evidence-based, and never influenced by affiliate relationships.
$ Can I use StepFun through Uprouter Connect?
Yes — StepFun is Connect-compatible. Add your StepFun API key in Uprouter Connect (encrypted at rest) and route requests to it through one OpenAI- and Claude-compatible API, optionally behind failover aliases. Uprouter meters the traffic in compute at the provider's listed rate.
Raw community sentiment, shown unblended. Votes never feed into objective data fields like price, risk, or status — and never into sort order.
No published reviews yet — be the first.
// more_informationprice history · live status · risk & confidence · code snippets
price_history
No recorded changes yet.
live_status
full history →best-effort probes · not a guarantee · last 13h ago
| Checked | Status | Latency |
|---|---|---|
| 13h ago | up | 1157ms |
| 14h ago | up | 1119ms |
| 1d ago | up | 1128ms |
| 2d ago | up | 1105ms |
| 3d ago | up | 1063ms |
| 4d ago | up | 1045ms |
| 12d ago | up | 112ms |
Uprouter runs its own probes; best-effort, not a guarantee. Probe results depend on our network location and cadence — for production, always use the provider’s own status page.
risk_&_confidence
Official platform of a major Chinese AI foundation model developer. Provides transparent pricing, comprehensive documentation, and a clear tiered access system. Data handling follows standard commercial cloud provider practices.
Confidence reflects how much verifiable evidence (official docs, probe history, community reports) backs this entry. Risk is our editorial assessment of operator reliability and terms — not financial advice.
code_snippets
curl https://uprouter.online/api/connect/v1/chat/completions \ -H "Authorization: Bearer upr_live_YOUR_KEY" \ -H "Content-Type: application/json" \ -d '{
"model": "step-3",
"messages": [{ "role": "user", "content": "Hello via StepFun" }]
}'Metered in Uprouter compute — the usage log shows which upstream served each request and its exact cost.
Ranked by neutral similarity signals only — live status, Connect compatibility, free-tier shape and free-credit proximity. Commercial relationships never influence this list.