Step 3.7 Flash
As of Oct 4, 2026, the cheapest Step 3.7 Flash API price is $0.185 per 1M input tokens (StepFun (China)) and $1.11 per 1M output tokens (StepFun (China)). Step 3.7 Flash is offered by 18 providers, open weights, reasoning enabled. 4 providers list it as a free-tier offer.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context |
|---|---|---|---|---|---|
| StepFun (China)open | Cheapest$0.185 | Cheapest$1.11 | $0.037 | — | 256k |
| StepFun (Global)open | $0.185 | $1.11 | $0.037 | — | 256k |
| Ambientopen | $0.19 | $1.14 | $0.03 | free | 262k |
| Eden AIopen | $0.2 | $1.15 | $0.04 | — | 262k |
| EmpirioLabs AIopen | $0.2 | $1.15 | $0.04 | — | 256k |
| Hugging Faceopen | $0.2 | $1.15 | — | — | 262k |
| Kilo Gatewayopen | $0.2 | $1.15 | $0.04 | — | 256k |
| DevPass (LLM Gateway)open | $0.2 | $1.15 | $0.04 | — | 262k |
| LLM Gatewayopen | $0.2 | $1.15 | $0.04 | — | 262k |
| OpenRouteropen | $0.2 | $1.15 | $0.04 | — | 262k |
| Requestyopen | $0.2 | $1.15 | $0.04 | — | 262k |
| Vercel AI Gatewayopen | $0.2 | $1.15 | $0.04 | — | 256k |
| ZenMuxopen | $0.2 | $1.15 | — | — | 256k |
| AIHubMixopen | $0.22 | $1.32 | $0.044 | — | 256k |
| Kenarifree | free | free | — | — | 256k |
| Kenarifree | free | free | — | — | 256k |
| UnoRouterfree | free | free | — | — | 256k |
| ZenMuxfree | free | free | — | — | 256k |
Subscription plans (not per-token)
Billed per month, not per token — never counted as the cheapest offer.
| Provider | 1M input | 1M output | Context |
|---|---|---|---|
| StepFun Step Plan (China)plan | — | — | 256k |
| StepFun Step Plan (Global)plan | — | — | 256k |
Step 3.7 Flash pricing FAQ
What is the cheapest Step 3.7 Flash API?
As of Oct 4, 2026, StepFun (China) has the lowest Step 3.7 Flash output price at $1.11 per 1M tokens, and StepFun (China) has the lowest input price at $0.185 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How many providers offer Step 3.7 Flash?
18 providers list Step 3.7 Flash on Sovyron; 14 of them sell it at a metered per-token price.
Is Step 3.7 Flash free?
4 provider(s) list a free-tier offer: Kenari, Kenari, UnoRouter, ZenMux. Free tiers usually have rate limits.
What is the context window of Step 3.7 Flash?
Step 3.7 Flash supports a 262k-token context window and up to 262k output tokens.