StepFun · Released Jan 1, 2025Step 2 (16K)
StepFun flash model for efficient multimodal reasoning, coding, and tool use.
- Capability
- —No ECI score yet
- Input
- $5.21per 1M tokens
- Output
- $16.44per 1M tokens
- Context
- 16K8K max output
What it costs
- Input
- $5.21per million tokens
- Output
- $16.44per million tokens
- Cached input
- $1.04per million tokens
- Blended (3:1)
- $8.02pricier than 93% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $18.64 |
| Team assistant25M input + 5M output tokens | $212.45 |
| Production app250M input + 50M output tokens | $2,125 |
Official StepFun (Global) API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Step 2 (16K) yet.
The details
- Lab
- StepFun
- Released
- Jan 1, 2025
- Knowledge cutoff
- Jun 2024
- Context window
- 16,384 tokens
- Max output
- 8,192 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- No
- Tool calling
- Yes
- Structured output
- No
- Weights
- Proprietary
- API model ID
step-2-16kon StepFun (Global)- Availability
- 1 API providerlisted on models.dev
More from StepFun
About Step 2 (16K)
How much does Step 2 (16K) cost?
Step 2 (16K) costs $5.21 input / $16.44 output per million tokens (official StepFun (Global) API price). Cached input is $1.04 per million tokens. At a 3:1 input-to-output mix that is $8.02 per million tokens, more expensive than 93% of the 360 priced models we track.
What is the context window of Step 2 (16K)?
Step 2 (16K) accepts up to 16,384 tokens per request and can write up to 8,192 tokens in one response.
How good is Step 2 (16K)?
Epoch AI has not published a Capabilities Index score for Step 2 (16K) yet.
Is Step 2 (16K) open source?
No. Step 2 (16K) is proprietary; you use it through StepFun (Global)’s API or partner platforms.
What inputs does Step 2 (16K) support?
Step 2 (16K) accepts text and replies in text. It is not a dedicated reasoning model, supports tool calling.
When was Step 2 (16K) released?
StepFun released Step 2 (16K) on Jan 1, 2025. Its training data runs to Jun 2024.
What are the best alternatives to Step 2 (16K)?
The closest current models from other labs on capability, price and release date are Qwen-MT Plus (Alibaba (Qwen), $2.46 / $7.37), Command A (Cohere, $2.50 / $10.00), Palmyra X4 (Writer, $2.50 / $10.00) and Sonar Deep Research (Perplexity, $2.00 / $8.00).