GPT for Sheets

GPT for Sheets is a Google Workspace add-on from docgpt.ai that turns spreadsheets into an AI batch-processing surface. You write a formula (or use the chat sidebar) and run prompts against GPT, Claude, Gemini, Perplexity, Grok, DeepSeek, Mistral and 100+ more models via OpenRouter, with image generation through DALL-E and friends. It also extends into Docs, Slides, Forms and Gmail, so the same prompt library can draft a slide deck, classify form responses, or write email replies.

The sell here is scale and ergonomics: it handles 300,000+ rows, runs hundreds of prompts per minute, and ships with web search and external API connectors so you can enrich rows from live sources. There's a free trial with no API key or credit card required (you can plug your own keys later for cost control), and paid tiers unlock the higher-volume features. It's aimed at marketers, analysts, ops teams and SEO/content shops who already live in Sheets and don't want to build a Python pipeline for what is essentially row-wise LLM calls.

Caveats: as a third-party add-on it inherits Google's add-on quirks (auth scopes, occasional execution-time limits), and at very large volumes you'll want your own API keys to keep costs sane. Still, for non-engineers it's one of the most direct ways to apply frontier models to tabular data.