StepFun
Step 3.7 Flash
stepfun/step-3.7-flashHugging Face ↗
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...
Only tracked on Vercel AI Gateway.
Step 3.7 Flash usage over time
Vercel AI Gateway share of tokens, by day.
Step 3.7 Flash holds 4.97% today, up from 0.03% at the start of the visible window.
Rank history
Adoption curve vs the pantheon
Step 3.7 Flash's share plotted against days since first tracked, overlaid on other current leaders on the same axis. The question every new-model page asks: is this one going to make it?
Citable stat
As of 2026-09-02, Step 3.7 Flash holds 5.0% of Vercel AI Gateway token share, up 0.83pp over 30 days. Source: Tidelines (Vercel AI Gateway).
Cost per session
Median dollars spent on one Step 3.7 Flash session, by coding agent and session length.
Token rate sets the price; session length and reasoning set the bill.
| Agent | 1 turn | 2–9 turns | 10–49 turns |
|---|---|---|---|
| Hermes Agent | $0.0041 | $0.012 | $0.071 |
Where to run it
Step 3.7 Flash pricing by provider
Per-provider pricing, context, and uptime via OpenRouter. Sorted by output price.
Step 3.7 Flash is served by 3 tracked endpoints on OpenRouter. The cheapest output price is $0.92 per million tokens from DeepInfra, and the most expensive is $1.15 from StepFun. The largest context window offered is 262k tokens. Prices are list rates and refresh daily.
| Provider | Input $/M | Output $/M | Context | Uptime |
|---|---|---|---|---|
| DeepInfra | $0.16 | $0.92 | 262k | 99.90% |
| Novita | $0.20 | $1.15 | 262k | 88.33% |
| StepFun | $0.20 | $1.15 | 256k | 93.58% |