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MODEL LIBRARY

StepFun (China)stepfun / step-5-preview

Step 5 Preview

StepFun's next-generation flagship base model for coding and professional knowledge work, with native text, image, and video input and a 1M-token context window

Provider
StepFun (China) (stepfun)
Model identifier
step-5-preview
Library category
Chat
Source update
2026-09-20
Release date
2026-09-16
Provider documentation
https://platform.stepfun.com/docs/zh/overview/concept

Source pricing and conditions

Costs retain the source structure, tiers and conditions. These snapshot values are not Allgate API quotes. Cost currency and provider billing currency are separate fields; each defaults to USD when absent.

Cost currency: USD · Provider billing currency: CNY. Input, output, reasoning, cache and audio token fields use the cost currency per million tokens. Explicit per-image, per-second and per-10,000-character fields retain their named units and resolution conditions.

Tier prices apply above the stated size. When tiers exist, source logic ignores the legacy context_over_200k field. Scheduled prices override stated fields within their window; omitted fields inherit base prices. Source pricing schema

Cost currency differs from provider billing currency. The source may contain upstream estimates; no currency conversion has been applied here.

  • pricing: "stepfun" bills in CNY but 1 model(s) still carry upstream USD estimates; add cost overrides with "currency": "CNY"
cache_read
0.10461
input
1.04613
output
2.98895

Model metadata

Original source field names and values are preserved. False, zero, empty objects and missing values remain distinct. Missing capabilities are not inferred from a name, category or related version.

attachment
true
canonical_model_id
stepfun/step-5-preview
description
StepFun's next-generation flagship base model for coding and professional knowledge work, with native text, image, and video input and a 1M-token context window
id
step-5-preview
interleaved
field
reasoning_content
last_updated
2026-09-20
limit
context
1000000
input
1000000
output
65536
modalities
input
  1. text
  2. image
  3. video
output
  1. text
name
Step 5 Preview
open_weights
true
reasoning
true
reasoning_options
  1. type
    effort
    values
    1. low
    2. medium
    3. high
release_date
2026-09-16
structured_output
true
temperature
true
tool_call
true

Provider reference

Provider documentation and billing metadata belong to the listed source provider. They do not describe Allgate routing or account configuration.

id
stepfun
name
StepFun (China)
doc
https://platform.stepfun.com/docs/zh/overview/concept
currency
CNY
billing
priority
10

About this reference

This library reproduces the public llm-metadata snapshot: 592 model entries from 50 providers. This community maintained source does not independently verify every provider claim. Model identifiers belong to their listed provider; matching names from different providers remain separate entries. llm-metadata

Reference metadata does not establish Allgate availability or prices. Check the live model catalogue for current service and rates. Missing fields remain unknown. Source update dates are not substituted for release dates; retrieval dates are not model update dates. View live catalogue

Source: llm-metadata · Apache-2.0 · Retrieved · Source generated · Snapshot provenance