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). It performs strongly in software engineering and professional...

LLM & Generative AI 1 model 3 listings snapshot Oct 14, 2026, 12:54 AM

Platforms

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Cheapest OpenRouter no official benchmark Input$1.00 Output$2.70 per 1M tokens Fastest OpenRouter lowest p50 latency on this board 128.1 ms p50 Most free quota — largest published free allowance — free tier

Model variants

W3r9 dedup — same model + identical tags merge; prices are listed per billing form

Model	Provider	Tags	Input /1M	Output /1M
stepfun/step-5-preview	OpenRouter	1M contextmultimodalreasoning	$1.00	$2.70
stepfun/step-5-preview	DashScope	1M contextmultimodalreasoning	$1.04	$2.96
stepfun/step-5-preview	Novita	1M contextmultimodalreasoning	$1.00	$2.70

Capabilities

official design_arena & architecture metadata

Design Arena Elo official design_arena benchmark (OpenRouter)

No official Design Arena benchmark from this provider. Showing official architecture metadata only.

Input / Output modalities modality: text+image+video->text

text in+out
image input only
video input only

Platform details

per provider

provider	model	Input /1M	Output /1M	Latency ?	Official $/1M	Availability	Data time
DashScope	stepfun/step-5-preview	$1.04	$2.96	—	—	—	2026-10-14 00:53:13
Novita	stepfun/step-5-preview	$1.00	$2.70	—	—	—	2026-10-14 00:54:15
OpenRouter	stepfun/step-5-preview	$1.00	$2.70	128.1 ms	—	100% available	2026-10-14 00:43:21

3 rows · snapshot 2026-10-14 00:54:15 · from data/public/prices.json + measurements.json