Step 3.7 Flash

Stepfun chatreasoningtool_usevideovision Long

API ID: stepfun/step-3.7-flash-20260528

Compare Calculate
Input Price
$0.20
/1M tokens
Output Price
$1.15
/1M tokens
Cached Input
$0.04
Save 80%

About Step 3.7 Flash

Step is StepFun AI's model series, delivering strong performance on general language tasks. The models excel at conversation, reasoning, and content generation. Step demonstrates StepFun's advancement in language model development. For developers seeking capable AI from StepFun, the series offers reliable performance.

💰
Price Ranking
#872 lowest price among 1240 Chat models

Model Specifications

Context Length
262k
Max Output
33k
Release Date
2026-05-28
Capabilities
chat reasoning tool_use video vision
Input Modalities
textimagevideo
Output Modalities
text

Best For

  • Complex reasoning, math problems, multi-step logic
  • Image analysis, document understanding, visual Q&A
  • Conversations, content writing, general assistance

Consider Alternatives For

  • Simple Q&A (cheaper models available)

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

Personal AI Assistant
$0.43
/month
50 conversations/day, ~500 tokens each
Customer Service Bot
$13.35
/month
1000 tickets/day, ~800 tokens each
Data Analysis Pipeline
$18.30
/month
500 analyses/day, ~2k tokens each
Calculate Your Custom Usage

Stepfun Model Lineup

Compare all models from Stepfun to find the best fit

Model Input Output Context Capabilities
Step 3.7 Flash Current $0.20 $1.15 262k chat reasoning tool_use video vision
Step 3.5 Flash (free) $0.10 $0.30 262k chat reasoning tool_use
Step 3.5 Flash (free) $0.10 $0.30 262k chat reasoning tool_use
View All Stepfun Models →

Similar Models from Other Providers

Cross-brand alternatives with similar capabilities

Alibaba Qwen Qwen3 Next 80B A3B Instruct
Alibaba Qwen
Input: $0.15
Output: $1.20
Context: 262k
Alibaba Qwen Qwen3 Next 80B A3B Thinking
Alibaba Qwen
Input: $0.15
Output: $1.20
Context: 262k
Alibaba Qwen Qwen3 Next 80B A3B Thinking
Alibaba Qwen
Input: $0.15
Output: $1.20
Context: 262k
Thedrummer Skyfall 36B V2
Thedrummer
Input: $0.55
Output: $0.80
Context: 33k
Compare These Models

💡 Cheaper Alternatives

Same Brand (Stepfun)

Step 3.5 Flash (free)
$0.10 $0.30 262k
Step 3.5 Flash (free)
$0.10 $0.30 262k

Cross Brand

GTE-Base Other
$0.0050 Free 512
E5-Base-v2 Other
$0.0050 Free 512
paraphrase-MiniLM-L6-v2 Other
$0.0050 Free 512

🚀 Quick Start

Get started with Step 3.7 Flash API

OpenAI-compatible SDK 
from openai import OpenAI

client = OpenAI(
    base_url="https://api.provider.com/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="stepfun/step-3.7-flash-20260528",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

Resources

Continue Your Decision

Back to Stepfun Add to Compare Calculate Cost