Model Library
StepFunReleased May 29, 2026Step 3.7 Flash
StepFun · Released May 29, 2026
Intelligence score
30
At a glance
- Intelligence
- 30
- Speed
- 409.6tokens/sec
- Latency
- 920mstime to first token
- Input price
- $0.20per 1M tokens
- Output price
- $1.15per 1M tokens
- Context window
- 260Ktokens
- Parameters
- 198billions
Summary
Comparison summary
Step 3.7 Flash scores 30 on the Artificial Analysis Intelligence Index, placing it above average among other open weight models of similar size (median: 25). Step 3.7 Flash generates output at 409.6 tokens per second (based on StepFun's API), which is well above average compared to other open weight models of similar size (median: 61.7 t/s). Step 3.7 Flash costs $0.20 per 1M input tokens (very competitive, median: $0.59) and $1.15 per 1M output tokens (better than average, median: $2.20), based on StepFun's API.
Specifications
Technical specifications
| Model name | Step 3.7 Flash |
|---|---|
| Provider | StepFun |
| Release date | May 29, 2026 |
| Intelligence score | 30 |
| Speed | 409.6 tokens/sec |
| Latency (TTFT) | 0.92s |
| Input price | $0.20 / 1M tokens |
| Output price | $1.15 / 1M tokens |
| Context window | 260,000 tokens |
| Parameters | 198B |
| Reasoning | Yes |
| Input modalities | text, image |
| Output modalities | — |
| Open weights | Yes |
| License | Apache 2 |
| API availability | — |
| Source | Model Intelligence legacy profile: step-3-7-flash |
Pricing
Token prices
Price per 1M tokens
Step 3.7 Flash, as listed in the catalog record
- Input$0.20
- Output$1.15
| Token type | Price per 1M |
|---|---|
| Input | $0.20 |
| Output | $1.15 |
Model Intelligence legacy profile: step-3-7-flash
FAQ · 21
Frequently asked questions
Step 3.7 Flash was released on May 29, 2026.
Step 3.7 Flash was created by StepFun.
Step 3.7 Flash scores 30 on the Artificial Analysis Intelligence Index, placing it above average among other open weight models of similar size (median: 25).
Step 3.7 Flash generates output at 409.6 tokens per second (based on StepFun's API), which is well above average compared to other open weight models of similar size (median: 61.7 t/s).
Step 3.7 Flash has a time to first token (TTFT) of 0.92s (based on StepFun's API), which is very competitive compared to other open weight models of similar size (median: 2.01s).
Step 3.7 Flash costs $0.20 per 1M input tokens (very competitive, median: $0.59) and $1.15 per 1M output tokens (better than average, median: $2.20), based on StepFun's API.
Step 3.7 Flash costs $0.20 per 1M input tokens and $1.15 per 1M output tokens (based on StepFun's API). For a blended rate (7:2:1 cache hit/input/output ratio), this is $0.18 per 1M tokens. Pricing may vary by provider.
When evaluated on the Intelligence Index, Step 3.7 Flash generated 260M output tokens, which is at the higher end compared to other open weight models of similar size (median: 92M).
Yes, Step 3.7 Flash is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Step 3.7 Flash supports text and image input.
Step 3.7 Flash supports text output.
Yes, Step 3.7 Flash supports image input and can analyze, describe, and answer questions about images.
Yes, Step 3.7 Flash is multimodal. It can process text and image input and generate text output.
Step 3.7 Flash has a context window of 260k tokens. This determines how much text and conversation history the model can process in a single request.
Yes, Step 3.7 Flash is open weights. The model weights are publicly available and can be downloaded for self-hosting.
Step 3.7 Flash has 198 billion parameters (11 billion active).
Step 3.7 Flash is a Mixture of Experts (MoE) model with 198 billion total parameters, but only 11 billion active parameters are used during inference.
Step 3.7 Flash is released under the Apache 2.0 license. This license allows commercial use.
Step 3.7 Flash achieves a score of 30 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Yes, Step 3.7 Flash is available via API through 2 providers.
Step 3.7 Flash is available through 2 API providers.