S
Step 3.7 Flash
Scores reviewed 2026-07-24Prices checked 2026-10-25stepfun
- OpenRouter
- stepfun/step-3.7-flash
- Context
- 262K
- Price per 1M
- $0.2 in / $1.15 out
- Tooling
- 4/5
- Deploy
- Cloud API
Monthly cost, worked example
| Input | 667,000 tokens × $0.2 per 1M | $0.13 |
|---|---|---|
| Output | 333,500 tokens × $1.15 per 1M | $0.38 |
| Total | ~$0.52/mo |
667 requests a month at 1,000 input and 500 output tokens each, about 1M tokens. The recommender uses the same assumption when you don't give your own usage.
Best for
- Agentic workflows and tool calling
- Writing and editing code
- Long documents (~262K context)
- Cost-sensitive, high-volume workloads
Skip if
- You need open weights to self-host
Capability scores
Tool calling4/5
Tooling (1-5): how reliably the model calls tools and follows multi-step instructions. Editorial score from LMFinder, not a benchmark.
Multi-step reasoning3/5
Specifications
- Context window
- 262K tokens
- VRAM
- N/A (cloud-hosted)
- License
- proprietary
- Pricing
- $0.2 in / $1.15 out per 1M
- Deployment
- Cloud API
- Docs
- Model docs ↗
Our take
Step 3.7 Flash from stepfun offers a 262K-token context window and is well-suited to strong tool calling, coding, long-context work. Pricing is $0.2 in / $1.15 out per 1M, billed per token through the provider API.
Watch for the trade-offs: weights are closed, so you cannot self-host.
Compare to
Not sure this is the one?
Describe your project and let LMFinder rank the field for your exact constraints.
Describe your project →