Key Info
StepFun's Step 5 Preview is now available on OpenRouter as their new flagship for agentic work, built on a sparse MoE architecture with 27B active and 600B total parameters.
Highlights
- 1M context window with text, image, and video input support
- Optimized for coding and professional knowledge work, particularly finance
- Pricing: $1.00/M input and $2.70/M output, with cache hits at 50% off ($0.05/M)
- Launch includes a week of free access rolling out across opencode, cline, NousResearch, kilocode, and more
