Step 3.7 Flash
ModelOpen sourceActiveby StepFun · family “step-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... (description from the OpenRouter listing)
in: textin: imagein: videoout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Released
28 May 2026
Context window
262K tokens
Max output
230K tokens
Input $ / 1M tokens
$0.20
Output $ / 1M tokens
$1.15
Cached input $ / 1M
$0.040
Each benchmark shown separately with its own source
Benchmark results (0)
No benchmark results recorded for this model.
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
5 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Open release4mo agoStepFun releases Step 3.7 FlashOpenRouter models API