How much does Step 3.7 Flash cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Step 3.7 Flash costs about $222.00 per month at StepFun's list prices ($0.185 per 1M input tokens, $1.11 per 1M output tokens).

Does Step 3.7 Flash support prompt caching?

Yes. Cached input costs $0.037 per 1M tokens, compared with $0.185 for regular input.

How long is Step 3.7 Flash's context window?

Step 3.7 Flash accepts up to 256,000 tokens (256K) of context and returns up to 256,000 tokens per response.

Step 3.7 Flash API Pricing

StepFun · released May 29, 2026 · 256K context · API model ID step-3.7-flash

Step 3.7 Flash by StepFun API pricing: $0.185 per 1M input tokens and $1.11 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

Step 3.7 Flash prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$0.185
Output	$1.11
Cache read	$0.037
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

$222.00

per month

per day: $7.40
per request: $0.00074

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	$222.00/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$305.25/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$166.50/mo

Context and capabilities

Context: 256,000 tokens
Max output: 256,000 tokens
Input: text, image, video
Output: text
Knowledge cutoff: Mar 1, 2026
Open weights: Yes
Tool calling: Yes
Reasoning: Yes
Structured outputs: No

Capabilities and limits as listed by models.dev.

Similarly priced models

DeepSeek V4.1 Flash · $0.30 in / $1.20 out
MiniMax-M3 · $0.30 in / $1.20 out
GLM-5.3-FlashX · $0.37 in / $1.25 out
Qwen3.8 Flash · $0.15 in / $0.47 out

Price history

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

Questions

How much does Step 3.7 Flash cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Step 3.7 Flash costs about $222.00 per month at StepFun's list prices ($0.185 per 1M input tokens, $1.11 per 1M output tokens).
Does Step 3.7 Flash support prompt caching?: Yes. Cached input costs $0.037 per 1M tokens, compared with $0.185 for regular input.
How long is Step 3.7 Flash's context window?: Step 3.7 Flash accepts up to 256,000 tokens (256K) of context and returns up to 256,000 tokens per response.