Step 3.5 Flash (free) API Cost Calculator
Estimate your monthly API costs for Step 3.5 Flash (free) from Stepfun.
Pricing per 1M tokens
Pricing last verified: Mar 21, 2026
Estimate Your Costs
What are you building?
Cost Breakdown
Compare with Similar Models
| Model | Input/1M | Output/1M |
|---|---|---|
| Step 3.5 Flash Stepfun | $0.1000 | $0.3000 |
| Trinity Large Preview (free) Arcee Ai | $0.00 | $0.00 |
| Trinity Mini (free) Arcee Ai | $0.00 | $0.00 |
| Uncensored (free) Cognitivecomputations | $0.00 | $0.00 |
| Gemma 3 12B (free) Google | $0.00 | $0.00 |
Frequently Asked Questions
How much does Step 3.5 Flash (free) cost per token?
Step 3.5 Flash (free) is priced at $0.00 per 1M input tokens and $0.00 per 1M output tokens. Use the calculator above to estimate your monthly costs based on your usage volume.
What is the context window for Step 3.5 Flash (free)?
Step 3.5 Flash (free) has a context window of 256K tokens (256,000 tokens). The maximum output length is 256K tokens.
Does Step 3.5 Flash (free) support function calling (tool use)?
Yes, Step 3.5 Flash (free) supports function calling (also called tool use). You can define custom functions that the model can invoke as part of its responses.
How does Step 3.5 Flash (free) compare to similar models?
Step 3.5 Flash (free) costs $0.00 input and $0.00 output per 1M tokens. Step 3.5 Flash (free) is competitively priced compared to Gemma 3 12B (free) ($0.00 input / $0.00 output per 1M tokens). See the "Compare with Similar Models" table above, or visit the Gemma 3 12B (free) page at /tools/cost-calculator/google/gemma-3-12b-it-free.