Cleo Helios

The most capable Cleo model ever created.

Cleo Helios is the flagship AI model developed by Inserloft. Built for advanced reasoning, coding, multimodal understanding, and agent-based workflows, Helios represents the highest-performance model in the Cleo ecosystem.


Cleo Helios is designed for:

  • Advanced reasoning
  • Complex coding tasks
  • AI agents
  • Long-context understanding
  • Multimodal workflows
  • Research and analysis
  • Enterprise-scale applications

Helios is the largest and most powerful model in the Cleo family.


ModelFocus
Cleo NaNoLightweight and fast
Cleo KyroBalanced intelligence
Cleo HeliosMaximum capability

Optimized for deep analysis, multi-step thinking, and problem solving.

Strong capabilities across multiple programming languages and software workflows.

Designed to handle large documents, conversations, and extended memory tasks.

Built for autonomous and semi-autonomous AI systems.

Supports text, images, structured data, and future multimodal extensions.

Understands and generates content across multiple languages.


  • High reasoning performance
  • Efficient scaling
  • Tool integration
  • Agentic behavior
  • Sparse computation
  • Long-context optimization

Helios is being optimized for strong performance across industry benchmarks including:

  • MMLU
  • GSM8K
  • HumanEval
  • ARC-AGI
  • SWE-bench

  • AI assistants
  • Software engineering
  • Research workflows
  • Enterprise automation
  • Creative generation
  • Autonomous agents
  • Advanced chat systems

Cleo Helios is currently under active development.

More information, benchmarks, demos, and API access will be available soon.