Claude Tuner Notices

Ever pasted the same question into several AIs and flipped between tabs to compare? Claude Tuner now does it in one place.

What is AI Cross-Check (Beta)?

• Send one question to every AI you're signed in to — Claude, ChatGPT, Gemini — and watch the answers stream side by side.
• Different models of the same AI (e.g. Claude Opus and Sonnet) can each get their own column — up to 5.
• Follow-up questions go to every column at once, or to just one.
• "Summarize & compare" asks one AI to read the others' answers and lay out agreements, conflicts and a verdict (spends 1 compare).
• The "Process" panel shows each AI thinking and searching; column headers show the plan and 5-hour / 7-day usage gauges.
• Your last 20 conversations are kept in the browser under "Recent". Turn on "Incognito" if you don't want a record.

Getting started

1. On desktop Chrome / Edge, update the Claude Tuner extension to 1.32.0 or later. Chrome updates it automatically; to do it now, open chrome://extensions → Developer mode → "Update".
2. Sign in to the AI sites you want to compare (claude.ai · chatgpt.com · gemini.google.com). AIs you're not signed in to show a "Sign in required" column.
3. Open claudetuner.com/multiai and type your question. A Claude Tuner sign-in is required.

How it works (privacy)

• Every request is sent from your own browser, through your own AI accounts (web sessions). No API keys; each AI's plan and usage limits apply as usual.
• Your questions and answers never go to Claude Tuner's servers. The server only records your daily count and which AI/model was targeted.
• Conversations appear in each AI's history (Claude titles are prefixed [C.T.]). Turn on "Incognito" to keep them out — temporary chats on Claude and Gemini, hidden from ChatGPT history when the session ends.

Limits and Premium

• Free: 30 per day (one send = 1, regardless of how many AIs). Resets daily at 00:00 UTC; the remaining count is shown on screen.
• Premium (₩6,900/month · ₩69,000/year): unlimited cross-checks plus no ads in the extension and dashboard. Details at claudetuner.com/pricing.

Beta notes

• Changes to the AI services' websites may temporarily break the feature. Let us know at support@claudetuner.com.