# stepfun-ai/Step-3.5-Flash API prices

stepfun-ai/Step-3.5-Flash (step) — 262k context, 262k max output.
2 metered per-token offers from 2 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| SiliconFlow | $0.1 | $0.3 | — | 262k |
| SiliconFlow (China) | $0.1 | $0.3 | — | 262k |

## Summary

- Cheapest input: $0.1 per 1M tokens (SiliconFlow)
- Cheapest output: $0.3 per 1M tokens (SiliconFlow)
- First-party: not listed separately
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2026-02-11
- Inputs: text

## FAQ

### What is the cheapest stepfun-ai/Step-3.5-Flash API?

As of Oct 4, 2026, SiliconFlow has the lowest stepfun-ai/Step-3.5-Flash output price at $0.3 per 1M tokens, and SiliconFlow has the lowest input price at $0.1 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How many providers offer stepfun-ai/Step-3.5-Flash?

2 providers list stepfun-ai/Step-3.5-Flash on Sovyron; 2 of them sell it at a metered per-token price.

### Is stepfun-ai/Step-3.5-Flash free?

No provider in the Sovyron catalog lists a free tier for stepfun-ai/Step-3.5-Flash.

### What is the context window of stepfun-ai/Step-3.5-Flash?

stepfun-ai/Step-3.5-Flash supports a 262k-token context window and up to 262k output tokens.

HTML page: https://sovyron.com/models/stepfun-ai-step-3-5-flash/
Full dataset: https://sovyron.com/data/catalog.json