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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 4.8
  • GPT-5.5
  • Claude Sonnet 4.6
  • DeepSeek V4 Flash
  • DeepSeek V4 Pro
  • Gemini 3.5 Flash
  • Gemini 3.1 Pro
  • GLM 5.2
  • GPT 5.3 Codex
  • Grok 4.20
  • Kimi K2.7
  • MiniMax M3