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cto works with the best frontier LLMs. Auto model automatically routes your task to the best frontier LLM, balancing performance, cost, and speed. cto model support includes:
  • Claude Opus 5
  • Claude Fable 5
  • Kimi K3
  • GPT-5.6
  • DeepSeek V4 Pro
  • Gemini 3.1 Pro
  • GLM 5.3 Flash