What is Step 5 Preview?

Step 5 Preview is a large language model from StepFun, released on September 20, 2026. It accepts text, image and video input.

When was Step 5 Preview released?

StepFun released Step 5 Preview on September 20, 2026.

How much does Step 5 Preview cost?

Step 5 Preview costs $1 per 1M input tokens and $2.70 per 1M output tokens through the StepFun API. Cached input costs $0.05 per 1M tokens. Prices are from StepFun's official pricing as of September 20, 2026.

What is Step 5 Preview's context window?

Step 5 Preview has a 1M-token context window and can generate up to 64K output tokens.

Step 5 Preview

StepFun·Pending·Released 2026-09-20textvisionvideo

Context1,000k

Max output64k

Input / 1M$1 ↗

Output / 1M$2.7 ↗

Cached in$0.05

Benchmarks0

Benchmarks

Cited public sources · rank is exact-benchmark, apples-to-apples

No cited benchmarks yet.

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Step 5 Preview FAQ

What is Step 5 Preview?: Step 5 Preview is a large language model from StepFun, released on September 20, 2026. It accepts text, image and video input.
When was Step 5 Preview released?: StepFun released Step 5 Preview on September 20, 2026.
How much does Step 5 Preview cost?: Step 5 Preview costs $1 per 1M input tokens and $2.70 per 1M output tokens through the StepFun API. Cached input costs $0.05 per 1M tokens. Prices are from StepFun's official pricing as of September 20, 2026.
What is Step 5 Preview's context window?: Step 5 Preview has a 1M-token context window and can generate up to 64K output tokens.

Access Step 5 Preview and every other model through one endpoint with automatic failover: Respan gateway.