Last refreshed 2026-05-29. Next refresh: weekly.
Why use Step 3.7 Flash on StepFun?
StepFun offers Step 3.7 Flash with pay-as-you-go pricing at $0.20/1M input tokens. StepFun is a Chinese AI company providing API access to its Step series of large language and multimodal models.
Compare Step 3.7 Flash across 3 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: step-3.7-flashstep-3.7-flashRequest example
step-3.7-flash.Gotchas
No curated gotchas have been sourced for this exact provider/model route yet.
Compare Step 3.7 Flash Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| StepFun | $0.20 | $1.15 |
| OpenRouter | $0.20 | $1.15 |
| NVIDIA NIM | — | — |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.20 |
| Output tokens | $1.15 |
| Image input | $1.00 |
| Video input | $1.00 |
Capabilities
About Step 3.7 Flash
Step 3.7 Flash is StepFun's open-weights multimodal Mixture-of-Experts model for agentic coding, tool use, long-context reasoning, image understanding, and video understanding. It combines a 196B-parameter language backbone with a 1.8B-parameter vision encoder, activates about 11B parameters per token, supports a 256K-token context window, and exposes low, medium, and high reasoning levels for speed/depth tradeoffs. StepFun reports leading open-model results on ClawEval-1.1, SimpleVQA with Search, and SWE-bench Pro at launch. Weights are available on Hugging Face under Apache 2.0.
FAQ
What does Step 3.7 Flash cost on StepFun?
On StepFun, Step 3.7 Flash costs $0.20 per 1M input tokens and $1.15 per 1M output tokens.
What is the context window for Step 3.7 Flash on StepFun?
Step 3.7 Flash supports a 256k token context window on StepFun.
How does StepFun compare to other Step 3.7 Flash providers?
Step 3.7 Flash is available from 3 providers. The cheapest input pricing is $0.20/1M tokens from StepFun.
What API model ID do I use for Step 3.7 Flash on StepFun?
Use the model ID step-3.7-flash when calling StepFun's API.
Who created Step 3.7 Flash?
Step 3.7 Flash was created by StepFun as part of the Step model family.
Is Step 3.7 Flash open source?
Step 3.7 Flash is open source according to the seed data.