Stepfun model
Step 3.5 Flash API cost calculator
Step 3.5 Flash costs $0.10 per 1M input tokens and $0.30 per 1M output tokens on the Stepfun API, with a 262K-token context window. A typical request (2K input, 500 output tokens) costs $0.0003 — about $10.50/month at 1,000 requests per day. Use the calculator below to model your exact workload.
Find me a cheaper modelWhat real workloads cost on Step 3.5 Flash
| Workload | Tokens (in / out) | Per request | Per 1K requests |
|---|---|---|---|
| Chatbot message | 500 / 300 | $0.0001 | $0.14 |
| RAG query with context | 4,000 / 500 | $0.0006 | $0.55 |
| Document summarization | 20,000 / 1,000 | $0.0023 | $2.30 |
| Agent coding session | 100,000 / 5,000 | $0.01 | $11.50 |
Step 3.5 Flash vs other Stepfun models
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| Step 3.5 Flash | $0.10 | $0.30 | 262K |
| Step 3.7 Flash | $0.20 | $1.15 | 262K |
Frequently asked questions
How much does Step 3.5 Flash cost per 1M tokens?
According to current pricing data, Step 3.5 Flash costs $0.10 per 1M input tokens and $0.30 per 1M output tokens. Processing 1M tokens each way costs $0.40.
What does a typical API request to Step 3.5 Flash cost?
A typical request with 2,000 input tokens and 500 output tokens costs $0.0003. At 1,000 requests per day that is $0.35 daily, or about $10.50 per month.
What is Step 3.5 Flash's context window?
Step 3.5 Flash supports a 262K-token context window (262,144 tokens).
Does Step 3.5 Flash support prompt caching?
No cache-read pricing is published for Step 3.5 Flash, so every input token is billed at the full $0.10 per 1M rate.
What is a cheaper alternative to Step 3.5 Flash?
Ling-2.6-flash from Inclusionai is currently the cheapest comparable option at $0.01 per 1M input tokens versus $0.10 for Step 3.5 Flash — roughly 10x cheaper on input.
Compare all current prices on the live model pricing dashboard, see Step 3.5 Flash vs Ling-2.6-flash pricing, or run Step 3.5 Flash head-to-head against other models in the side-by-side comparison playground.
Pricing data via the OpenRouter models API.