Provider · 2026-05-12
StepFun
| Model | Input / 1M | Output / 1M | Context | Providers | Tags |
|---|---|---|---|---|---|
| Step 3.5 Flash | $0.096 | $0.288 | 256K | 9 | tools · reasoning · open-weights |
| Step 3.5 Flash 2603 | $0.100 | $0.300 | 256K | 1 | tools · reasoning · open-weights |
| Step 1 (32K) | $2.05 | $9.59 | 33K | 1 | tools · reasoning |
| Step 2 (16K) | $5.21 | $16.44 | 16K | 1 | tools · reasoning |
Frequently asked questions
How many AI models does StepFun offer?
We track 4 canonical StepFun models. The list is recomputed daily from models.dev.
Which StepFun model is the cheapest?
Step 3.5 Flash is currently the lowest-priced StepFun model, at $0.096 per 1M input tokens and $0.288 per 1M output tokens. For the full apples-to-apples list, see /pricing/cheapest-llm-api.
Which StepFun model has the largest context window?
Step 3.5 Flash leads at 256K tokens. This is the total of prompt + completion.
Which StepFun models support tool calling?
Multiple StepFun models support tool calling, with Step 3.5 Flash being a popular pick. The capability column in the table above marks every model with StepFun tool-calling support.
What are the best alternatives to StepFun?
Depends on the use case. For raw cost savings, look at /pricing/cheapest-llm-api. For agent-oriented workloads, /best/best-ai-model-for-agents. For long-document workflows, /best/best-long-context-llm.
How fresh is this StepFun pricing data?
Daily. Our pipeline pulls models.dev each morning and rebuilds these pages on data change, so list-price moves and new model releases land within roughly 24 hours.
Explore more
Top StepFun models
- Step 3.5 Flash$0.10 in / $0.29 out
- Step 3.5 Flash 2603$0.10 in / $0.30 out
- Step 1 (32K)$2.05 in / $9.59 out
- Step 2 (16K)$5.21 in / $16.44 out
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Last updated:
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
Data is sourced from models.dev and normalized for comparison. Prices and capabilities may change. Always verify critical production decisions with the provider's official documentation.