StepFun: Step 5 Preview pricing
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). StepFun: Step 5 Preview from OpenRouter costs $1.00 per 1M input tokens and $2.70 per 1M output tokens. Cached input is $0.100 per 1M. Context window 1,000,000 tokens.
API id stepfun/step-5-preview · OpenRouter · source · updated 2026-11-10 · general-purpose
$1.00
Input / 1M tokens
$2.70
Output / 1M tokens
$0.100
Cached input / 1M
1M
Context window
StepFun: Step 5 Preview specifications
- Provider
- OpenRouter
- API id
stepfun/step-5-preview- Model type
- general-purpose
- Context window
- 1M tokens
- Max output
- 64K tokens
- Currency
- USD
- Price source
- Provider API
- Last checked
- 2026-11-10
Tags
- preview
- vision
What StepFun: Step 5 Preview costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0024 |
| Document summary | 50,000 | 2,000 | $0.06 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $1.54 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
StepFun: Step 5 Preview price history
| Recorded | Input /1M | Output /1M |
|---|---|---|
| 2026-10-16 | $1.00 | $2.70 |
| 2026-10-09 | $1.00 | $2.70 |
Common questions
- How much does StepFun: Step 5 Preview cost per 1M tokens?
- StepFun: Step 5 Preview costs $1.00 per 1M input tokens and $2.70 per 1M output tokens on the standard tier. Cached input is $0.100 per 1M.
- What is StepFun: Step 5 Preview's context window?
- StepFun: Step 5 Preview accepts up to 1,000,000 tokens in a single request, and can return up to 64,000 output tokens.
- Is there a cheaper OpenRouter model than StepFun: Step 5 Preview?
- Yes. Free Models Router is free per 1M input tokens versus $1.00 for StepFun: Step 5 Preview, with a 200,000 token context window.
- Where does this StepFun: Step 5 Preview price come from?
- From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.
Head-to-head comparisons
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- Recursive: Flint (free) Free