Step 3.5 Flash 2603 by StepFun demonstrates competitive pricing. View detailed benchmark data including scores across coding, math, reasoning, speed, and cost metrics.
Specifications last checked against the provider on . Benchmark scores carry their own source, linked beside each number.
Cost Benchmarks
Context Benchmarks
Available from 6 providers
The same model costs different amounts depending on who serves it.
| Provider | Input / 1M | Output / 1M | Cached in | Context | Your key |
|---|---|---|---|---|---|
| EmpirioLabs AI | $0.1 | $0.3 | $0.02 | 256K | — |
| NanoGPT | $0.1 | $0.3 | $0.05 | 262K | — |
| StepFun (China) | $0.1 | $0.3 | $0.02 | 256K | — |
| StepFun (Global) | $0.1 | $0.3 | $0.02 | 256K | — |
| StepFun Step Plan (China) | — | — | — | 256K | — |
| StepFun Step Plan (Global) | — | — | — | 256K | — |
Step 3.5 Flash 2603 — Frequently Asked Questions
How much does Step 3.5 Flash 2603 cost?
Step 3.5 Flash 2603 costs $0.10 per 1M input tokens and $0.30 per 1M output tokens. This makes it one of the more affordable models.
What is the context window of Step 3.5 Flash 2603?
Step 3.5 Flash 2603 has a context window of 256K tokens. This determines how much text, conversation history, and code the model can process in a single request.
Who created Step 3.5 Flash 2603?
Step 3.5 Flash 2603 was created by StepFun. It is classified as a open source model in our catalogue.
Is Step 3.5 Flash 2603 open source?
Yes, Step 3.5 Flash 2603 is an open-source model. The model weights are publicly available for download and self-hosting.