Claude vs ChatGPT vs Gemini – which AI for coding tasks in 2026?

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Our dev team is arguing about which AI assistant to use. Currently on ChatGPT Plus but Claude is tempting with that 200k context window.

Our use cases:

  • Code review and debugging
  • Writing tests
  • Explaining legacy code
  • Scaffolding new features

Gemini Ultra looks crazy on paper but not sure about real-world coding performance.

Which one actually helps you ship faster? Looking for real dev feedback not marketing!