Bridge by Wekoya / Models / StepFun / Step 5 Preview API, priced in naira

Step 5 Preview API, priced in naira

In short: You can use Step 5 Preview, a model by StepFun, from Nigeria through Bridge and pay in naira, with no dollar card. It costs ₦1,755 per million input tokens and ₦4,739 per million output tokens. Call it with the OpenAI SDK using the model ID step-5-preview.

Updated

Price and limits

Step 5 Preview
Input, per million tokens₦1,755
Output, per million tokens₦4,739
Cached input, per million tokens₦176
Writing to the cache, per million tokens₦1,755
Context window1,048,576 tokens
Longest reply16,384 tokens
Reads picturesYes
Tool callingYes
Reasoning (thinks before it answers)Yes
Model IDstep-5-preview

Prices as of 8 November 2026. They are in naira and follow the exchange rate, so the live price may differ a little. A token is roughly three quarters of a word.

What a request costs

A request that sends 1,500 tokens (instructions, the conversation so far and a question) and gets 500 back (about 375 words) costs about ₦5.00 on 8 November 2026. A thousand of them cost about ₦5,002. When 1,000 of the input tokens are instructions that stay the same, prompt caching reads them at the cached rate and the request costs about ₦3.42.

Use Step 5 Preview from your code

Bridge speaks the OpenAI format, so the OpenAI SDK works as it is: set the base URL to https://wekoya-api.wekoya.tech/v1, use your Bridge key, and pass step-5-preview as the model. Create a key, then:

from openai import OpenAI

client = OpenAI(api_key="wk_live_...", base_url="https://wekoya-api.wekoya.tech/v1")
reply = client.chat.completions.create(
    model="step-5-preview",
    messages=[{"role": "user", "content": "Hello"}],
)
print(reply.choices[0].message.content)

Streaming works the same way, and so does tool calling. To send a picture, add it to the message as an image. The quickstart has the same in JavaScript and curl, and the Responses API works too.

Other StepFun models on Bridge

ModelInput / 1MOutput / 1MContext
Step 3.7 Flash₦351₦2,018262,144

Every StepFun model on Bridge, with what each can do.

Lower-priced models that can do the same things

These cost less per request than Step 5 Preview and can also read pictures, call tools, reason and take at least 1,048,576 tokens of context. Quality differs from model to model, so test on your own examples first: AI tasks compares models on your cases and tells you whether a cheaper one is good enough.

ModelInput / 1MOutput / 1MContext
Gemini 3.8 Flash₦1,114₦5,5691,048,576
Gemini 3.7 Flash₦1,114₦5,5691,048,576
Gemini 3.6 Flash₦1,114₦5,5691,048,576
Gemini 3.5 Flash Lite₦446₦3,7131,048,576

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Common questions

How much does Step 5 Preview cost in naira?

On Bridge, Step 5 Preview costs ₦1,755 per million input tokens and ₦4,739 per million output tokens, with cached input at ₦176 (as of 8 November 2026). A request that sends 1,500 tokens and gets 500 back costs about ₦5.00. There is no subscription and no minimum.

Can I use the Step 5 Preview API from Nigeria without a dollar card?

Yes. Create a free Bridge account, top up your naira balance by bank transfer to your own account number, and call Step 5 Preview with your Bridge key. A card works too, but it is not needed.

Does Step 5 Preview on Bridge work with the OpenAI SDK?

Yes. Use the OpenAI SDK or any OpenAI-compatible client with the base URL https://wekoya-api.wekoya.tech/v1 and the model ID step-5-preview. Streaming works, and so does tool calling.

What is the context window of Step 5 Preview?

1,048,576 tokens, about 786,432 words of instructions, conversation and documents together. It writes up to 16,384 tokens in one reply.

Can Step 5 Preview read pictures?

Yes. Send a picture in the message as an image_url, by link or as base64, and Step 5 Preview reads it. Pictures are counted as input tokens.

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