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Step 5 Preview

by Stepfun

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).

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Our verdict

Not reviewed yet

We have not reviewed Step 5 Preview yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About Step 5 Preview

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).

Notes

Step 5 Preview is listed in the EDNA Models directory from the OpenRouter catalogue.

Key facts

What we have checked

Input price
$1.00 per million tokens
Checked OpenRouter models API
Output price
$2.70 per million tokens
Checked OpenRouter models API
Price on deepinfra
$0.100 per million cached input tokens
Checked OpenRouter models API
Price on deepinfra
$1.00 per million input tokens
Checked OpenRouter models API
Price on deepinfra
$2.70 per million output tokens
Checked OpenRouter models API
Price on featherless
$0.100 per million cached input tokens
Checked OpenRouter models API
Price on featherless
$1.00 per million input tokens
Checked OpenRouter models API
Price on featherless
$2.70 per million output tokens
Checked OpenRouter models API
Price on gmicloud
$0.100 per million cached input tokens
Checked OpenRouter models API
Price on gmicloud
$1.00 per million input tokens
Checked OpenRouter models API
Price on gmicloud
$2.70 per million output tokens
Checked OpenRouter models API
Proofbench
42% (for 18 Sept 2026)
Checked Epoch AI (CC BY 4.0)

Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.

API access

How to call it

Call via OpenRouter with model id `stepfun/step-5-preview`.

  • openrouter · stepfun/step-5-preview · Docs

OpenRouter id: stepfun/step-5-preview

Price

What Step 5 Preview costs, over time

Input price

$1.00 to $1.00

US dollars per million input tokens. 8 Oct 2026 to 10 Nov 2026, 27 days.

Source: OpenRouter models API. Checked .

Output price

$2.70 to $2.70

US dollars per million output tokens. 8 Oct 2026 to 10 Nov 2026, 27 days.

Source: OpenRouter models API. Checked .

Prices by host

HostPriceOver timeChecked
deepinfraCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
deepinfraInput$1.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
deepinfraOutput$2.70 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
featherlessCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
featherlessInput$1.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
featherlessOutput$2.70 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
gmicloudCached input$0.100 per million cached input tokensSince 30 Oct 2026No change recordedOpenRouter models API
gmicloudInput$1.00 per million input tokensSince 30 Oct 2026No change recordedOpenRouter models API
gmicloudOutput$2.70 per million output tokensSince 30 Oct 2026No change recordedOpenRouter models API
inference-netCached input$0.050 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
inference-netInput$1.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
inference-netOutput$2.70 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
stepfunCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
stepfunInput$1.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
stepfunOutput$2.70 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API

Usage

How much Step 5 Preview is used

Tokens served a day

632.2B to 803.2B

tokens a day on OpenRouter. 8 Oct 2026 to 10 Nov 2026, 34 readings.

Source: OpenRouter model activity (748 of 748 series). Checked .

Scores

How Step 5 Preview scores

Each score comes from the named source and shows when we last confirmed it. A flag means the score needs care.

ScoreValueSourceChecked
Artificial Analysis Intelligence Index28.5indexAs of 10 Nov 2026Artificial Analysis via OpenRouter
LMArena text rating (Elo)1,443EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
LMArena web development rating (Elo)1,573EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
LMArena vision rating (Elo)1,263EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
Proofbench (best-across-versions)42percentAs of 18 Sept 2026Epoch AI (CC BY 4.0)

Sources

Where this comes from

A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.

Changelog

What changed

No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.

USAGE / OPENROUTER

How much Step 5 Preview is used

Tokens processed through OpenRouter each day. It shows what developers actually run, not every company's private traffic.

Tokens, last 7 days
6.9T ▲3.9%
Requests, last 7 days
27M
Tool calls, last 7 days
147K
Intelligence score
28.5
People's vote
1443
Average cost per request
95.5¢
Price per million tokens
$1 in · $2.7 out
02.5T5T8 Oct: 632B tokens, 3.3M requests9 Oct: 2.6T tokens, 13.9M requests10 Oct: 3.1T tokens, 16.8M requests11 Oct: 2.5T tokens, 13.7M requests12 Oct: 3.2T tokens, 16.1M requests13 Oct: 3T tokens, 14.8M requests14 Oct: 3.7T tokens, 17.5M requests15 Oct: 1.3T tokens, 7.6M requests16 Oct: 179B tokens, 1M requests17 Oct: 4.4B tokens, 97.1K requests18 Oct: 5.4B tokens, 82.4K requests19 Oct: 4.6B tokens, 79.3K requests20 Oct: 566B tokens, 2.2M requests21 Oct: 235B tokens, 935K requests22 Oct: 640B tokens, 2.5M requests23 Oct: 585B tokens, 2.3M requests24 Oct: 800B tokens, 3.1M requests25 Oct: 801B tokens, 3.1M requests26 Oct: 801B tokens, 3.1M requests27 Oct: 802B tokens, 3.1M requests28 Oct: 960B tokens, 3.7M requests29 Oct: 1.2T tokens, 4.6M requests30 Oct: 960B tokens, 3.7M requests31 Oct: 800B tokens, 3.1M requests1 Nov: 748B tokens, 2.9M requests2 Nov: 1T tokens, 3.9M requests3 Nov: 1T tokens, 4M requests4 Nov: 1T tokens, 4M requests5 Nov: 1.1T tokens, 4.3M requests6 Nov: 1.1T tokens, 4.4M requests7 Nov: 962B tokens, 3.7M requests8 Nov: 959B tokens, 3.7M requests9 Nov: 963B tokens, 3.8M requests10 Nov: 803B tokens, 3.2M requests8 Oct22 Oct5 Nov10 NovSee where it ranks on the leaderboard →

MODEL FIELD GUIDE / SOURCE EVIDENCE

What you can do with Step 5 Preview.

Listed specifications; no EDNA task evaluation has been run. Sources checked 2026-11-10. Hosting routes and app features can differ.

DeveloperStepfun
Exact model identifierstepfun/step-5-preview
Inputtext, image, video
Outputtext
Tool calling
Listed support
Structured output
Listed support
Reasoning controls
Listed support
Availability
available
Price basis
token
Licence verification
Custom licence, open weights
Context length
1M tokens
Knowledge cutoff
Not established
Developer release date
Not established
First seen in the catalogue
8 Oct 2026
Listed retirement date
Not established
Inspect the sources and their scope
catalogue source ↗

stepfun/step-5-preview: listed route capabilities, availability and prices; provider endpoints can differ.

Checked 2026-11-10
openrouter.ai ↗

Source for reasoning controls, first seen, tool calling, context length, input, output, structured output.

Checked 2026-11-10
Licence source ↗

Licence declared in the stepfun-ai/Step-5-Preview model repository on Hugging Face, which holds the weights files. Read the licence terms before use.

Checked 2026-11-07
How to evaluate a model for your work →

FROM SPECIFICATIONS TO YOUR WORK

Is this the right model for your job?

Start with a realistic sample. These workflows match the model’s listed capabilities, not a verified result on your task.

Extract document dataWorkflow & starter prompt ↗Run a reliable agentWorkflow & starter prompt ↗

What would it cost?

Pick a common job and how many times a month you run it. Token sizes are our assumption for a typical run, shown under the result.

Working out the cost...

Token prices only. Per-request, image, tool, storage and subscription fees are not included. One token is about three quarters of an English word. Real counts vary by model and language. How tokens are counted ↗

Check the source

Price date: 10 Nov 2026, from OpenRouter models API. Prices are USD API token rates. Your app subscription, uploads, browsing and tools are separate.

Model source & availability ↗

Understand the evidence

Listed capabilities and third-party benchmark scores do not establish Enterprise DNA task-test results. Validate accuracy and total cost on your own sample.

Intelligence Index: 28.5 (2026-11-09) ↗Vals Index: 54.762 (2026-11-09) ↗
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