SIDE BY SIDE
Perceptron Mk1.5 vs Step 3.7 Flash
Each is the newest model of its family in Maple Highlands, and the two are neighbours there by blended price.
| Field | Perceptron Mk1.5 | Step 3.7 Flash |
|---|---|---|
| Provider | Perceptron | StepFun |
| Family | Perceptron | StepFun |
| Province | Maple Highlands | Maple Highlands |
| Context window | 37K tokens | 262K tokens |
| Maximum output | 8K tokens | 230K tokens |
| Input / 1M tokens | $0.150 | $0.200 |
| Output / 1M tokens | $1.50 | $1.15 |
| Accepts | text, audio, images, video | text, images, video |
| Produces | text | text |
| Reasoning | Yes | Yes |
| Tool use | Yes | Yes |
| Added to OpenRouter | 2026-09-25 | 2026-05-28 |
| Model ID | perceptron/perceptron-mk1.5 | stepfun/step-3.7-flash |
Questions and answers
Which is cheaper, Perceptron Mk1.5 or Step 3.7 Flash?
It depends on the mix: Perceptron Mk1.5 is cheaper for input ($0.150 vs $0.200), Step 3.7 Flash for output ($1.15 vs $1.50) per million tokens. At three input tokens per output token, Step 3.7 Flash costs less. On input, Perceptron Mk1.5 is 25% cheaper.
Which has the larger context window?
Step 3.7 Flash: 262K tokens against 37K for Perceptron Mk1.5 (7.1× as long).
What can one do that the other cannot?
Nothing among reasoning, tool use and image input: both support reasoning, tool use and image input.
Answers are computed from the 2026-10-24 catalog snapshot.