The board shows this model's cheapest measured offer ($0.150/1M); the smaller figure under it is the mean of the 2 offers listed below ($0.150/1M). Add those up and divide — it matches.
| Provider | Router / Source | $ in /1M | $ out /1M | TTFT | TPS | Uptime | Evidence |
|---|---|---|---|---|---|---|---|
| openrouter-best | OpenRouter | $0.100 | $0.300 | — | — | — | API-measured |
| deepinfra | HuggingFace Router | $0.100 | $0.300 | 294ms | 115 | — | API-measured |
Price trend
Cheapest blended price, last 31 days (USD/1M): $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15 → $0.15
Data & method
Cheapest ranked by blended = (3×in + out) ÷ 4; performance columns show only when a source provides them, never estimated. “Official list” = LiteLLM open pricebook (MIT); “API-measured” = provider/aggregator public APIs. Machine-readable data: /api/v1/models/step-3.5-flash.json. Free reuse requires attribution to tkx.org.
FAQ
How much does Step 3.5 Flash cost?
Cheapest measured offer right now: $0.1/1M input, $0.3/1M output via openrouter-best — across 2 tracked providers, refreshed hourly.
Who serves Step 3.5 Flash?
2 providers currently serve it. The table above lists each with input/output price, TTFT, TPS, uptime and an evidence tier.
Is the price of Step 3.5 Flash going up or down?
The daily candles above track the cheapest blended price ($/1M, 3:1 in:out). TKX snapshots every hour, so drops and hikes show up the same day they happen.