StepFun: Step 3.7 Flash
The Step 3.7 Flash is an AI model developed by stepfun that supports multiple input modalities: text, image, and video. It has a large context length of 262144, allowing it to handle complex tasks with detailed information. Consider shortlisting the Step 3.7 Flash for tasks requiring a mix of text analysis and media processing. With a price point of $0.2 per million input tokens and $1.15 per million output tokens, it may be a cost-effective option for organizations or developers looking to leverage multimedia data. However, its blended benchmark score of 49.9 across three independent benchmarks suggests room for improvement in certain areas.
Benchmark results
Independent, published benchmarks. Blended score 49.9 across 3 benchmarks, last refreshed 2026-09-04. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 51.0 |
| AI Index Coding | software engineering tasks | 65.3 |
| AI Index Agentic | multi-step tool-using tasks | 35.9 |
- Model ID
- stepfun/step-3.7-flash
- Vendor
- stepfun
- Released
- May 2026
- Tokenizer
- Other
- Input Modalities
- text, image, video
- Output Modalities
- text
- Max Output
- 230,400 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.20/M input and $1.15/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | under $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.16 |
| A month of a busy support chatbot | 5M in / 2M out | $3.30 |
Price & spec history
Tracked daily by PicksByModel since 2026-07-17.
| Date | Input /M | Output /M | Context |
|---|---|---|---|
| 2026-07-22 | $0.20 | $1.15 | 262,144 |
| 2026-07-17 | $0.20 | $1.15 | 256,000 |
Category rankings
Where StepFun: Step 3.7 Flash places across the 1 category it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #22 | Video Auto-TaggingVideo · of 25 ranked | 123 |
Similar models
Quick answers
- How much does StepFun: Step 3.7 Flash cost?
- $0.20 per million input tokens and $1.15 per million output tokens.
- What is StepFun: Step 3.7 Flash's context window?
- 262,144 tokens, roughly 393 pages of text in a single request.
- Does StepFun: Step 3.7 Flash support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can StepFun: Step 3.7 Flash process images?
- Yes, it accepts image input.