How much does Step 5 Preview cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Step 5 Preview costs about $705.00 per month at StepFun's list prices ($1.00 per 1M input tokens, $2.70 per 1M output tokens).

Does Step 5 Preview support prompt caching?

Yes. Cached input costs $0.05 per 1M tokens, compared with $1.00 for regular input.

How long is Step 5 Preview's context window?

Step 5 Preview accepts up to 1,024,000 tokens (1.02M) of context and returns up to 65,536 tokens per response.

Step 5 Preview API Pricing

StepFun · released Sep 16, 2026 · 1.02M context · API model ID step-5-preview

Step 5 Preview by StepFun API pricing: $1.00 per 1M input tokens and $2.70 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

Step 5 Preview prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$1.00
Output	$2.70
Cache read	$0.05
Cache write	Not published

StepFun's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Estimated monthly cost

$705.00

per month

per day: $23.50
per request: $0.00235

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$705.00/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$1,403/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$522.00/mo

Context and capabilities

Context: 1,024,000 tokens
Max output: 65,536 tokens
Input: text, image, video
Output: text
Knowledge cutoff: Not published
Open weights: No
Tool calling: Yes
Reasoning: Yes
Structured outputs: Yes

Capabilities and limits as listed by models.dev.

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DeepSeek V4 Pro · $1.32 in / $3.96 out

Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does Step 5 Preview cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Step 5 Preview costs about $705.00 per month at StepFun's list prices ($1.00 per 1M input tokens, $2.70 per 1M output tokens).
Does Step 5 Preview support prompt caching?: Yes. Cached input costs $0.05 per 1M tokens, compared with $1.00 for regular input.
How long is Step 5 Preview's context window?: Step 5 Preview accepts up to 1,024,000 tokens (1.02M) of context and returns up to 65,536 tokens per response.