StepFun: Step 3.7 Flash
Analysis Summary
Step 3.7 Flash is a fast-oriented StepFun model with a 262K context window and support for text, images, and video. Its reasoning is suitable for everyday business tasks, while coding performance and tool-oriented evaluation results make it more useful than a basic content generator. Function calling and tool use provide a practical integration path for automated workflows.
It fits SEO briefs, content transformations, customer support drafts, lightweight coding assistance, and high-volume document processing. The model's instruction-following and tool-use results are useful for structured work, but its lower intelligence and agentic capability make it less appropriate for complex software engineering or unsupervised multi-step agents. Human review remains important for high-stakes client deliverables.
Low input pricing and a substantial context window give Flash a strong volume role. Adopt it for routine production traffic where throughput and cost matter more than frontier reasoning, and escalate difficult cases to a stronger model.
Assessed August 9, 2026
Editorial notes
Step 3.7 Flash delivers good reasoning, competitive coding, 262K context, multimodal input, and very low pricing. Strong function calling supports volume workflows, while deeper autonomous tasks need supervision.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Step 3.7 Flash delivers good reasoning, competitive coding, 262K context, multimodal input, and very low pricing. Strong function calling supports volume workflows, while deeper autonomous tasks need supervision.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
30.9 Intelligence Index·39.6 Coding Index·21.7 Agentic Index
How StepFun: Step 3.7 Flash compares
StepFun: Step 3.7 Flash ranks #123 of 428 AI models we track for overall intelligence, #91 of 201 for coding, #82 of 183 for agentic tasks. Its 262K-token context window is larger than 72% of the models we list. At $0.20 per million input tokens it is cheaper than 57% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.20 | $0.000200 |
| Output | $1.15 | $0.001150 |
What would StepFun: Step 3.7 Flash cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 717 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save StepFun: Step 3.7 Flash for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout StepFun: Step 3.7 Flash
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters..
Frequently asked questions about StepFun: Step 3.7 Flash
How much does StepFun: Step 3.7 Flash cost?
StepFun: Step 3.7 Flash costs $0.20 per million input tokens and $1.15 per million output tokens.
What is the context window of StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash has a context window of 262,144 tokens (262K).
Is StepFun: Step 3.7 Flash good for coding?
On our coding benchmark index, StepFun: Step 3.7 Flash ranks #91 of 201 models, placing it in the broader range of the field for code generation and debugging.
What can StepFun: Step 3.7 Flash do?
StepFun: Step 3.7 Flash supports image/vision input, tool use, and function calling.
Who created StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash is developed by StepFun and was released on May 28, 2026.