Step 3.7 Flash
StepFun · Mid
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...
Input / 1M
$0.2
Output / 1M
$1.15
Cached input / 1M
$0.04
Context window
256K
Where it sits
112th-cheapest mid model
by blended $/Mtok among 262 listed mid models
23% below the mid median
blended $/Mtok across 262 mid models
Output costs 5.8× input
$0.2 in / $1.15 out per 1M
Cached input saves 80%
$0.04 vs $0.2 per 1M fresh
Held flat since launch (Jun 2026)
no blended price change recorded
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Only one price on record so far — the history chart appears once a price changes.
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 11 Jun 2026 | $0.2 | $1.15 | $0.04 | Imported from OpenRouter | openrouter.ai |