Chat with all AIClaude Duet: Claude plus a second model, side by side
A “duet” is the simplest way to get better AI answers: let Claude write, and let a model from another lab check it — or the other way round. In Chat with all AI, both are in the same menu.
Why pair two models
Models from different labs make different mistakes. When Claude and GPT-6.1 (or Muse, or Grok) agree, you can be more confident. When they disagree, you've found exactly what to double-check.
Duet recipes
- Writer + editor: draft with Claude Sonnet 5.5, then ask GPT-6.1 Terra for a tighter structure.
- Coder + reviewer: write with Claude Opus 5.5, review with GPT-6.1 Sol.
- Thinker + skeptic: plan with Claude Fable 5.2, stress-test with Grok 4.7.
- Fast + deep: quick answer from Claude Haiku 5.5, deep dive with Muse Wonder.
How to run a duet
- Ask with a Claude model.
- Switch the model and press Regenerate — or paste the first answer and ask for a critique.
- Keep the best answer or merge them.
Prompt to copy
About Claude
Claude is a family of models by Anthropic. Chat with all AI is independent and not affiliated with Anthropic; “Claude Duet” here describes a way of using Claude with a second model.
Frequently asked questions
Do I need a Claude subscription?
No. Claude models are included in Chat with all AI's free requests and Pro plan.
Which Claude models are available?
Haiku 5.5, Sonnet 5.5, Opus 5.5 and Claude Fable 5.2.
Can I see both answers at once?
Each answer stays in the conversation, labelled with its model, so you can scroll and compare.
Every top AI model, one side panel
Try GPT-6.1, Claude, Muse and Grok free — 3 requests, no card needed.