Prediction: Step 5 Preview price, context, and no final model
The preview is already listed at this price and context. A final model is not in the response. Hub downloads are still low.
On 2026-10-21 the question is what Step 5 Preview listings show, and which fields in those two responses are still empty. It is still a preview.
Check Step 5 Preview. stepfun/step-5-preview. OpenRouter https://openrouter.ai/api/v1/models. Hugging Face https://huggingface.co/api/models?search=Step-5-Preview. sitdraw · guide.
Fields OpenRouter lists this time
| Field | Value on 2026-10-21 | Absent from the same response |
|---|---|---|
| Model id | stepfun/step-5-preview | No Step 5 id without Preview |
| Listed | Unix 1791462849, 2026-10-08 UTC | expiration_date is empty |
| Context | 1048576 | This date is not a GA date |
| Provider context | 1000000 | Not the same field as context_length |
| Max completion | 64000 | |
| Input price | 0.000001 USD per token, $1.00 per 1,000,000 | |
| Output price | 0.0000027 USD per token, $2.70 per 1,000,000 | |
| Cache read | 0.0000001 USD per token, $0.10 per 1,000,000 | |
| Modalities | In: text, image, video. Out: text | knowledge_cutoff is empty |
| Reasoning | Required; high / medium / low; default medium | This page cites no benchmark |
Official preview cards in the Hugging Face search
| Repo | Downloads | Likes | createdAt | Not on this card |
|---|---|---|---|---|
stepfun-ai/Step-5-Preview | 1766 | 119 | 2026-09-20 | pipeline_tag and library_name empty; name still says Preview |
stepfun-ai/Step-5-Preview-BF16 | 562 | 55 | 2026-09-20 | Name still includes Preview |
stepfun-ai/Step-5-Preview-NVFP4 | 538 | 16 | 2026-10-14 | Separate repo, not a GA marker |
The same search also returns community repos. Their names still include Preview. They are not a final stepfun-ai model id. The OpenRouter hugging_face_id points at stepfun-ai/Step-5-Preview.
Three sentences this prediction can say
The preview is already listed at this price and context. A final model is not in the response. Hub downloads are still low. The price describes the preview row on 2026-10-21. The download count is not a quality score. Neither response includes a general-availability date.
How to read the listings again
- 01Open the OpenRouter models list
Find id stepfun/step-5-preview. Read context_length and pricing. Multiply USD per token by 1,000,000.
- 02Open the Hugging Face search
Search Step-5-Preview. Read downloads, likes, and createdAt on stepfun-ai/Step-5-Preview and Step-5-Preview-NVFP4.
- 03Look for an id without Preview
On 2026-10-21 neither response had one. If one appears later, this note is stale. Do not invent a general-availability date.
# 2026-10-21
# OpenRouter id: stepfun/step-5-preview
# context_length: 1048576
# prompt: 0.000001 USD/token → $1.00 / 1,000,000
# completion: 0.0000027 USD/token → $2.70 / 1,000,000
# created: 1791462849 (2026-10-08 UTC)
# HF stepfun-ai/Step-5-Preview: downloads 1766, likes 119, createdAt 2026-09-20
# HF stepfun-ai/Step-5-Preview-NVFP4: downloads 538, likes 16, createdAt 2026-10-14Is this the final Step 5 price?
No. It is the preview row's price on 2026-10-21. A final model is not in the response.
Why are there two context numbers?
context_length is 1048576. top_provider.context_length is 1000000. Both fields are on the same OpenRouter object.
Is 1766 downloads a quality score?
No. It is the Hub download counter. This preview only says the official preview card's downloads are still low.
When does the final model ship?
Neither response includes a general-availability date. expiration_date is empty. This page does not add one.
One page is enough for the numbers
Spread the table, then leave. sitdraw.