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Van Data Team
Current modelStepFun

Step 5 Preview benchmarks, pricing and specs

Step 5 Preview is a StepFun model with no published release date that takes text, image and video input and produces text. It costs $1 per 1M input tokens and $2.70 per 1M output tokens and accepts up to 1,000,000 tokens of context.

Per 1M input tokens
$1
Per 1M output tokens
$2.70
Context window
1M

Data verified October 13, 2026 · Dataset 2026-10-13

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Key facts

Provider
StepFun
Model family
Step 5
Release date
Not reported
Status
Current
Access
API only
API model id
step-5-preview
Context window
1,000,000 tokens
Max output
64,000 tokens
Input
text, image, video
Output
text
Task families
text, multimodal
Declared capabilities
reasoning, coding, agentic coding, image understanding, document understanding

Step 5 Preview pricing

It is the #17 cheapest of 47 current text models priced per 1M input tokens.

UnitPrice (USD)TierAppliesSource
1M input tokens$1standardCurrent
1M output tokens$2.70standardCurrent
1M input tokens$0.10cachedCurrent

Independent benchmark results

Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. StepFun's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.

No independent benchmark has published a result for Step 5 Preview yet. It is still compared below on price, context and capabilities.

Strengths, cautions and best uses

Strengths

  • StepFun's flagship for agentic work, with particular strength claimed in software engineering and finance
  • Text, image and video input within a 1M-token context, with low, medium and high reasoning effort
  • Tool calling, JSON Schema output and prompt caching

Cautions

  • A preview: StepFun publishes no release date, parameter count or benchmark scores for it
  • Output tokens are billed including the reasoning trace, and output is capped at 64K tokens

Best for

  • Long-context agentic coding and finance work

Alternatives to Step 5 Preview

The closest current textmodels by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.

Compare Step 5 Preview with

Step 5 Preview FAQ

How much does Step 5 Preview cost?

Step 5 Preview costs $1 per 1M input tokens and $2.70 per 1M output tokens at the standard tier. It is the #17 cheapest of 47 current text models priced per 1M input tokens. Source: StepFun, verified October 13, 2026.

What is the context window of Step 5 Preview?

Step 5 Preview accepts up to 1,000,000 tokens of context. It can return up to 64,000 tokens in one response. That ranks #25 of 57 current text models by context length.

Is Step 5 Preview open source or API only?

Step 5 Preview is available through StepFun's API only; its weights are not published.

What are the best alternatives to Step 5 Preview?

The closest current alternatives by price and measured performance are Grok 4.20 (25% more per 1M input tokens, $1.25 vs $1), Grok 4.3 (25% more per 1M input tokens, $1.25 vs $1), Muse Spark 1.3 (25% more per 1M input tokens, $1.25 vs $1) and DeepSeek-V4-Pro (32% more per 1M input tokens, $1.32 vs $1).

Sources

Cite this page

Van Data Team. "Step 5 Preview Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-13. https://vandatateam.com/ai-model-benchmarks/step-5-preview

Reuse the data: JSON · CSV · or explore every model in the AI model benchmark comparison.

Production evaluation

Deciding whether Step 5 Preview fits your workload?

Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.

  • Evaluation cases and acceptance thresholds tied to real work
  • Model routing, fallbacks and cost controls
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