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StepFun Step Plan (Global)stepfun-ai-step-plan / 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 Step Plan (Global) (stepfun-ai-step-plan)
Model identifier
step-5-preview
Library category
Chat
Source update
2026-09-20
Release date
2026-09-16
Provider documentation
https://platform.stepfun.ai/docs/en/step-plan/integrations/reasoning-api

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: USD. 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

This provider entry uses a subscription. A zero cost value does not establish free access or usage.

No cost object is specified in this source entry.

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-ai-step-plan
name
StepFun Step Plan (Global)
doc
https://platform.stepfun.ai/docs/en/step-plan/integrations/reasoning-api
subscription
true
billing
priority
5

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