# StepFun releases Step 5 Preview with 1 million-token context

_Published Saturday, September 19, 2026 at 5:05 AM EDT · AI · Latest · Tier 2 — Notable_

![Model intelligence, performance, and price analysis — Primary](https://artificialanalysis.ai/en/models/step-5/opengraph-image?ea6b93c60ecab06d)

StepFun released Step 5 Preview on September 18, according to Artificial Analysis. The proprietary reasoning model accepts text and image input, produces text output, and has a one-million-token context window. Artificial Analysis reported an Intelligence Index score of 44, output speed of 99.8 tokens per second, and API pricing of $1 per million input tokens and $2.70 per million output tokens. The evaluator says pricing may vary by provider.

## Sources

- [Artificial Analysis](https://artificialanalysis.ai/models/step-5)

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Canonical: https://techandbusiness.org/newswire/8YObPJ7O-1XDRIid7fLv8r
Published: 2026-09-19T09:05:49.779Z
Story chronology: 2026-09-18T00:00:00.000Z
Retrieved: 2026-09-19T11:22:07.222Z
Publisher: Tech & Business (techandbusiness.org)