StepFun: Step 5 Preview API
stepfun/step-5-previewTextCall StepFun: Step 5 Preview through UberLLM’s OpenAI-compatible API, from $0.10/M input and $0.27/M output, served by third-party providers. Made by StepFun. Open weights. 1,000,000 token context. No UberLLM fee on requests. Adding credit by card costs 5.5% + $0.50.
Also sold directly by: OpenRouter. Here, sellers serve it through their own provider accounts. Why so cheap? · Where the capacity comes from
How much does the StepFun: Step 5 Preview API cost?
On November 13, 2026, StepFun: Step 5 Preview costs $0.10 per million input tokens and $0.27 per million output tokens through UberLLM, 90% below its list price of $1.00 and $2.70. 1 seller on the market can serve it. It reads up to 1,000,000 tokens of context. Every request is listed with its cost in the Activity log. UberLLM adds no fee to these prices, and a request that fails is not billed.
What is the cheapest StepFun: Step 5 Preview API?
On November 13, 2026, the cheapest StepFun: Step 5 Preview API we found is UberLLM, at $0.10 per million input tokens and $0.27 per million output tokens. That is at least 90% less on both input and output than the closest other provider we checked, OpenRouter ($1.00 and $2.70). Vercel AI Gateway, Requesty, DeepInfra and Novita AI are higher still. 1 seller on the UberLLM market can serve it. UberLLM adds no fee to these prices, and a request that fails is not billed.
Prices as of November 13, 2026, 04:00 UTC. This page is rebuilt every hour.
| Provider | Input / 1M tokens | Output / 1M tokens | UberLLM is lower by |
|---|---|---|---|
| UberLLM | $0.10 | $0.27 | |
| OpenRouter | $1.00 | $2.70 | 90% |
| Vercel AI Gateway | $1.00 | $2.70 | 90% |
| Requesty | $1.00 | $2.70 | 90% |
| DeepInfra | $1.00 | $2.70 | 90% |
| Novita AI | $1.00 | $2.70 | 90% |
UberLLM: the higher of the best seller’s price now and the listed price, no fee added. Other prices from each provider's public price list: OpenRouter, Vercel AI Gateway, Requesty, DeepInfra, Novita AI
StepFun: Step 5 Preview pricing
You save $0.90 per 1M input tokens and $2.43 per 1M output tokens against the official price of $1.00 / $2.70. Why so cheap? OpenRouter charges $1.00 / $2.70 per 1M input / output tokens.
- Input
- $0.10
- Output
- $0.27
- Cached input
- $0.005
- Input
- $1.00
- Output
- $2.70
Prices as of 04:00 UTC.
Each request is sent to an available third-party provider for this model and retried if the provider fails before it starts answering. No UberLLM fee on requests. Adding credit by card costs 5.5% + $0.50.
How to use StepFun: Step 5 Preview with the OpenAI SDK
With the OpenAI SDK, set the base URL to UberLLM and call StepFun: Step 5 Preview with your existing code. Anthropic SDKs work against https://api.uberllm.dev/v1/messages.
from openai import OpenAI
client = OpenAI(
base_url="https://api.uberllm.dev/v1",
api_key="ull_your_key_here",
)
resp = client.chat.completions.create(
model="stepfun/step-5-preview",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Use StepFun: Step 5 Preview in your apps
Each guide sets the UberLLM base URL and key; then set the model to stepfun/step-5-preview.
StepFun: Step 5 Preview API FAQ
Can I cap what a StepFun: Step 5 Preview request costs?
Yes. A request costs what its provider charged; the listed price is $0.10 input and $0.27 output per million tokens, and a request can cost more when the cheaper providers are busy. Send provider.max_price with your most per million tokens: the request only goes to providers at or under it and is never billed above it. Each request is listed with its cost in Activity.
How do I call StepFun: Step 5 Preview via API?
Use any OpenAI-compatible SDK: set the base URL to https://api.uberllm.dev/v1, your UberLLM API key, and model "stepfun/step-5-preview". Anthropic SDKs work via https://api.uberllm.dev/v1/messages.
Is StepFun: Step 5 Preview OpenAI-compatible on UberLLM?
Yes. Every model on UberLLM, including StepFun: Step 5 Preview, is served through one OpenAI-compatible endpoint. Set the base URL and key in your existing client.
Why is StepFun: Step 5 Preview cheaper on UberLLM?
UberLLM is a market: sellers offer StepFun: Step 5 Preview capacity below its list price, and each request goes to a seller that can serve it. A request costs what its seller charged, UberLLM adds no fee to it, and every request is listed with its cost in Activity.
Are there other fees?
UberLLM adds no fee to model prices. A card fee of 5.5% + $0.50 is added when you buy credit. With the 5.5% added, UberLLM's StepFun: Step 5 Preview price is still lower than every other provider in the table.
Compared with other providers: Best OpenRouter alternatives