Copy-paste Claude formulas for Google Sheets
Pick Claude Opus 4.8 in GPT for Sheets, drop a formula into row 2, then drag it down to run it across every row.
Research & explain
A: topic or question
=CLAUDE("Explain this clearly for a smart non-expert, with 3 key takeaways: " & A2)
Score & classify
A: text · B: criteria or labels
=CLAUDE("Classify the following as one of [" & B2 & "] and explain why in one line: " & A2)
Draft outreach
A: prospect · B: offer · C: angle
=CLAUDE("Write a short, personalized cold email to " & A2 & " offering " & B2 & " using this angle: " & C2)
Is Claude Mythos available in Google Sheets?
You can use Claude Mythos in Google Sheets with a =CLAUDE() formula (once access is restored). Mythos 5 is Anthropic’s limited-availability frontier model (the “Project Glasswing” sibling of Fable 5). Right now its access is disabled worldwide (a June 2026 US export-control directive), so it isn’t usable in any product yet, including Google Sheets. Meanwhile, use Claude Opus 4.8 — the most powerful Claude you can run today — in the exact same formula.
The practical alternative: GPT for Sheets already runs Claude Opus 4.8 — Anthropic’s most powerful generally available model — plus GPT-5.5, Gemini 3, Grok 4.3, DeepSeek V4 and 100+ others, directly in spreadsheet cells. When Mythos/Fable reopen, you’ll run them the same way with a =CLAUDE() formula.
- Can I select Mythos in GPT for Sheets? Not while access is restricted. Today you pick Claude Opus 4.8 (or Sonnet 4.6 / Haiku 4.5) in the model dropdown.
- Will my formulas change later? No — when a new Claude model is available, you just select it; your
=CLAUDE()formulas stay the same. - What’s the strongest Claude I can use now? Opus 4.8, excellent for deep reasoning, research, and high-quality drafting across rows.
What is Claude Mythos?
Mythos 5 is a high-end, limited-release Claude model in the same generation as Fable 5. Anthropic restricted access shortly after launch for national-security / export-control reasons, with no public return date. This page will be updated when it becomes available.
Until then, the real way to get “Claude in Google Sheets” is Claude Opus 4.8 via GPT for Sheets.
Use Claude in Google Sheets today
Install GPT for Sheets and run Claude, GPT-5.5, Gemini, Grok, and Perplexity formulas directly in cells. Best for research, analysis, classification, outreach, and bulk enrichment.
Setup in under 2 minutes: Install GPT for Sheets → open the sidebar in Google Sheets → choose Claude and pick Opus 4.8 → add your Anthropic API key → run =CLAUDE() formulas across entire columns. No Zapier, no Apps Script.
Best for: research and explanations, scoring and classification, nuanced rewriting, and personalized outreach generated row-by-row.
Frequently asked questions
Can I use Claude Mythos in Google Sheets right now? No — Mythos access is suspended worldwide as of June 2026. Use Claude Opus 4.8 in GPT for Sheets instead; it’s the most powerful Claude model currently available.
How do I run Claude in Google Sheets?
Install GPT for Sheets, open the sidebar, choose Claude (Opus 4.8), add your Anthropic API key, and write =CLAUDE("your prompt " & A2) in any cell.
Is Mythos the same as Fable 5? They’re sibling frontier models from the same Claude generation; both had access suspended in June 2026. Opus 4.8 is the strongest Claude model you can actually use today.
Do I need Apps Script or Zapier? No. GPT for Sheets connects Claude to Google Sheets natively from the add-on sidebar.
Can I use other models too? Yes — the same add-on runs GPT-5.5, Gemini 3, Grok 4.3, DeepSeek V4, Mistral, Perplexity, and any model via OpenRouter.