Step 3.7 Flash
Step 3.7 Flash is an open-source multimodal reasoning model by StepFun with 198B total parameters (11B active) using Mixture of Experts. It accepts text and image inputs and features a 256K context window, selectable reasoning effort, tool calling, and agentic capabilities for coding and search workflows, scoring 80.9% on GPQA Diamond and 56.3% on SWE-bench Pro.
Modalities
In / out price
$0.20 / $1.15per 1M
Cached price
$0.04per 1M
Context
262K
Max output
16K
Providers
1 routeCompare providers by price, privacy, and speed.
| Private | $0.20 | $1.15 | $0.04 | 262K | 16K | — | — |
Privacy
2 / 4Private routing
Private tier
- Anonymous
- Private
- TEE
- E2EE
Prompt and response content is not retained after the request. Request content is visible to the inference runtime while it is being processed. Learn more
Features
5Streaming
Tool calling
Vision
video input
Prompt caching
Uptime
FAQ
Common questions about Step 3.7 Flash.