Step 5 Preview
stepfun-ai-step-plan/step-5-preview出品方： stepfun-ai-step-plan · 发布 2026-09-16
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
能力清单
Model fit scores
0–100 · higher is betterThese scores reward declared capabilities, context size, price and provider availability — they are not benchmark results. Use them as a directional signal alongside your own evaluation.
Coding91
- Tool calling40/40
- Structured output20/20
- Reasoning10/10
- Context window (100K → 1M)20/20
- Provider availability1/10
Agents91
- Tool calling35/35
- Structured output25/25
- Reasoning15/15
- Output token limit15/15
- Provider availability1/10
JSON / structured output70
- Structured output / JSON mode50/50
- Tool calling20/20
- Temperature control0/10
- Price-friendly for high-volume0/20
Cost efficiency0
- Has published price0/100
Long context80
- Context window (100K → 2M)80/90
- Has published price for full window0/10
Vision81
- Accepts image input50/50
- Context window (10K → 1M)30/30
- Has published price0/10
- Provider availability1/10
Production-readiness45
- Number of independent providers5/40
- Has published per-token price0/20
- Context window ≥ 8K15/15
- No data inconsistencies across providers10/10
- Official model (not derivative)15/15
Cost Efficiency Index
Open full calculator →Estimated cost using the recommended provider's headline rate. Each scenario fixes average input/output tokens — the assumptions are shown in the third column.
This model has no published per-token price, so we can't compute a cost estimate. See the provider's official pricing page for current rates.
在 1 家渠道可用
| 服务商 | 服务商模型 ID | 输入 / 1M | 输出 / 1M | 上下文 | 发布日期 |
|---|---|---|---|---|---|
| StepFun Step Plan (Global) stepfun-ai-step-plan | step-5-preview | Unknown | Unknown | 1M | 2026-09-16 |
Frequently asked questions
How much does Step 5 Preview cost?
Step 5 Preview does not have a publicly published per-token price in our data source. This usually means it is gated behind enterprise sales or invite access. Check stepfun-ai-step-plan's official pricing page for the most current rates.
What is the context window of Step 5 Preview?
Step 5 Preview has a context window of 1M tokens, with a max output of 66K tokens per reply. This is the total combined size of prompt + completion.
Does Step 5 Preview support tool calling?
Yes. Step 5 Preview supports tool calling (function calling). This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Does Step 5 Preview support structured output / JSON mode?
Yes. Step 5 Preview supports structured output / JSON-schema-constrained decoding. This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Can Step 5 Preview accept image input?
Yes. Step 5 Preview accepts both text and image input. Vision pricing per image is usually billed on top of the regular token rate — check stepfun-ai-step-plan's docs for the exact rule.
Is Step 5 Preview open-weight?
No. Step 5 Preview is a proprietary model — only stepfun-ai-step-plan (and any approved hosting partners) can serve it. The pricing above reflects the cheapest API access.
What are the best alternatives to Step 5 Preview?
If Step 5 Preview doesn't fit, consider Step 3.5 Flash 2603, Step 3.5 Flash, Step 3.7 Flash. Each one targets the same use case — see the Related links below for direct head-to-head pages.
Where does this data come from?
All numbers are normalised into a single canonical model record and reconciled with each provider's official documentation. We re-pull daily and write any changes (price, context, capability) to the /changelog page.
Explore more
More stepfun-ai-step-plan models
- Step 3.5 Flash 2603Unknown pricing
- Step 3.5 FlashUnknown pricing
- Step 3.7 FlashUnknown pricing
Capability lists this model is in
最近更新：
Pricing and capabilities are refreshed daily and reconciled against each provider's official documentation. Always verify critical production decisions with the provider directly.