Step 5 Preview: API pricing, providers and specs
Step 5 Preview is a text model by StepFun. 14 providers serve it, from $2.70 to $5.40 /1M; the lowest price is at Novita AI.
How Step 5 Preview compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $2.70 /1M, its lowest price is above 69% of comparable models (median $1.10).
- Its 1.05M-token context window is larger than 83% of them (median 262K), about 1570 pages of text.
- On LMArena's WebDev board it ranks #30 of the 64 comparable models scored there.
- 14 providers serve it; 83% of comparable models have fewer.
Step 5 Preview prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 Nvidia | Free/1M | Free/1M | — | — |
 Requesty | $1/1M | From$2.70/1M | $0.05/1M | 1.05M |
 Novita AI | $1/1M | $2.70/1M | $0.10/1M | — |
| Vercel AI Gateway | $1/1M | $2.70/1M | $0.10/1M | 1.05M |
 Deep Infra | $1/1M | $2.70/1M | $0.10/1M | — |
 EmpirioLabs AI | $1/1M | $2.70/1M | $0.05/1M | 1.02M |
| OpenRouter | $1/1M | From$2.70/1M | $0.10/1M | 1.05M |
 Impossibl | $1/1M | $2.70/1M | $0.05/1M | — |
 Poe | $1.01/1M | $2.73/1M | $0.051/1M | 1.02M |
 Kenari | $1.10/1M | $2.76/1M | $0.055/1M | — |
| AI/ML API | $1.06/1M | $2.86/1M | $0.053/1M | — |
| ZenMux | $1.05/1M | $3/1M | $0.052/1M | 1M |
 AIHubMix | $1.08/1M | $3.09/1M | $0.054/1M | 1M |
 UnoRouter | $2/1M | $5.40/1M | — | — |
- Novita AI$2.70
- Vercel AI Gateway$2.70
- Deep Infra$2.70
- EmpirioLabs AI$2.70
- Impossibl$2.70
- RequestyFrom$2.70
- OpenRouterFrom$2.70
- Poe$2.73
- Kenari$2.76
- AI/ML API$2.86
- ZenMux$3
- AIHubMix$3.09
Specs
- Type
- Text
- Maker
- StepFun
- Inputs
- Image, Text, Video
- Outputs
- Text
- Context
- 1.05M≈ 1570 pages of text
- Max output
- 64K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Sep 20, 2026
- License
- other
- Open weights
- Yes, downloadable
- Parameters
- 604B
- Arena score
- 1568WebDev
Alternatives to Step 5 Preview
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Step 5 Previewthis model | $2.70/1M | 1.05M | 1568 | 14 |
 Gemini 4 Argon | $8/1M | 1.05M | 1673 | 26 |
| GPT-6.1 Sol | $8/1M | 1.05M | 1749 | 27 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
| GPT-6 Sol | $8/1M | 1.05M | 1682 | 28 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
| Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
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The lowest price for Step 5 Preview is $2.70 /1M, at Novita AI.
Novita AI, at $2.70 /1M. 14 providers serve Step 5 Preview; the table above lists every one with its price.
Step 5 Preview reads up to 1.05M tokens per request and writes up to 64K.
Yes. Step 5 Preview's weights can be downloaded from its maker's Hugging Face page, under the other license.
About 604B, as the safetensors metadata of its official Hugging Face repo states.
14 API providers serve Step 5 Preview. Compare their prices above, or open a provider to see everything it offers.
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