AI Models
Step 5
StepFun 600B MoE frontier multimodal foundation model
Paid - from $0.001 / 1K tokensRuns in the cloudEditors pick
Pricing
Paid - from $0.001 / 1K tokens
$0.001 / 1K tokens
Platforms
Web
Hosted app
Category
AI Models
22 tools
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Last updated
Oct 14
Listing updated
Best for
Complex code generation and repo refactoring
Analyze large codebases within a 1-million-token window to plan and execute multi-file refactors.
Pricing checked Oct 2026
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About Step 5
Step 5 Preview is a frontier multimodal foundation model built on a sparse Mixture-of-Experts architecture by StepFun. Packing 600 billion total parameters with approximately 27 billion active parameters per token, Step 5 combines high compute efficiency with frontier-grade reasoning across long-context text, software engineering, visual comprehension, and multi-modal tool use. It boasts a massive 1-million-token context window.
- Massive 1M token context window with up to 64K token generation
- Sparse MoE architecture keeps inference cost and latency competitive
- OpenAI-compatible REST API integration
- Frontier weights are proprietary and available via API only
- High context operations require careful token budget management
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