--- title: "Learn - Page 4 | Dupple" url: "https://dupple.com/learn/4" description: "Practical AI guides, tutorials, and how-to articles. Learn to use ChatGPT, Perplexity AI, and other AI tools effectively for work and business." llms_txt: "https://dupple.com/llms.txt" --- Learn # AI guides & tutorials Practical, tested guides to help you pick and use AI tools at work. Prices checked on each vendor's own page. Search all guides 1013 guides Last published Nov 2026 ## Guides, page 4 Page 4 of 34 Article Nov 3, 2026 ## How to Estimate Cost per Lead from Newsletter Co-Registration: A Worked Model Dupple's post-signup offer cards were clicked 8.0% of the time (279,365 views, 4 Oct to 3 Nov 2026). Here is a worked model from that click rate to a cost per lead. Article Nov 3, 2026 ## Is DeepSeek Free in 2026? Chat, API and Self-Hosting Costs DeepSeek chat lists no paid plan, the API bills per token from $0.15 per million input tokens off-peak, and the MIT-licensed models are free to self-host. Article Nov 3, 2026 ## Lead Generation by Industry: Tech and Finance Segments Compared Nine overlapping quiz segments from 130,965 historical answers: self-reported roles, company size, email-domain classifications and offer clicks. Article Nov 3, 2026 ## Lead Generation for Accounting and Finance Software: How Many Finance Buyers You Can Reach Of 4,856 new subscribers who chose Finance & Accounting as their role (5 Aug to 3 Nov 2026), 521 are decision-makers at companies of 51 or more staff. Article Nov 3, 2026 ## Lead Generation for AI Products: Who Already Pays for AI, and How Much 56.5% of 28,509 new subscribers who answered Dupple's AI-tools question (5 Aug to 3 Nov 2026) pay for an AI tool. Spend, tools and offer fit. Article Nov 3, 2026 ## SaaS Lead Generation: Provider Types, Decision-Makers and Click Rates Dupple's quiz counts 3,089 Technology decision-makers at 51+ companies, 5 Aug to 3 Nov 2026. Provider types, work-email and click-rate tables for SaaS buyers. Article Nov 3, 2026 ## Lead Generation for Banking and Lending Products: The Finance & Banking Audience 13.3% of the 9,135 new subscribers who chose Finance & Banking in Dupple's quiz (5 Aug to 3 Nov 2026) are decision-makers at companies of 51+ employees. Article Nov 3, 2026 ## Lead Generation for Cybersecurity Vendors: What Our Quiz Data Can and Cannot Show Dupple's quiz has no security option. Two proxy rows: 6,418 respondents in engineering, 5 Aug to 3 Nov 2026, 9.1% decision-makers at 51+ companies. Article Nov 3, 2026 ## Lead Generation for Developer Tools: Engineers, Decision-Makers and Work-Email Supply Of 6,418 engineers who answered Dupple's quiz (5 Aug to 3 Nov 2026), 9.1% are decision-makers at 51+ companies. Audience, email and click data. Article Nov 3, 2026 ## Fintech Lead Generation: Who You Can Reach and How to Choose a Provider Fintech lead generation on Dupple: 1,206 new subscribers chose Finance & Banking and an engineering, data or product role (5 Aug to 3 Nov 2026). Article Nov 3, 2026 ## Lead Generation for HR and Workforce Software: The HR Audience in Numbers Of 2,967 new subscribers who chose Human Resources as their role (5 Aug to 3 Nov 2026), 53.4% report 51 or more employees. Table, limits and FAQ. Article Nov 3, 2026 ## Lead Generation for Martech and Marketing Software: Marketers, Sales Teams and Click Rates Of 11,173 new subscribers who chose Marketing & Communications (5 Aug to 3 Nov 2026), 36.7% are decision-makers. Role, size and click-rate tables. Article Nov 3, 2026 ## Newsletter Ad Marketplaces Compared: Paved, beehiiv, SparkLoop, TLDR and Dupple Five newsletter ad marketplaces sell different units: flat slots, clicks, subscribers or leads. beehiiv campaigns start at $15k. Read 3 Nov 2026. Article Nov 3, 2026 ## Newsletter Lead Gen Vendor Checklist and RFP Template: 28 Questions to Ask 28 questions for any newsletter lead vendor, with a paste-ready RFP template. Dupple answers 14 of them on its public page or from its own data, as of 3 Nov 2026. Article Nov 3, 2026 ## Who Signs Up: Dupple's Post-Signup Audience by Industry, Role, Seniority and Company Size Of 130,965 new subscribers who answered Dupple's quiz (5 Aug to 3 Nov 2026), 28.6% are decision-makers. Industry, role, seniority and size tables. Article Nov 3, 2026 ## What Counts as a Lead in Post-Signup Co-Registration, and What Dupple Checks Dupple can run a business-email and a company-size check on pay-per-lead offers. Of 130,964 quiz respondents, 12.6% used a non-consumer domain. Read 3 Nov 2026. Article Nov 2, 2026 ## Claude Code Pricing 2026: Every Plan, API Rates and Real Monthly Cost Claude Code pricing in 2026: included in Pro ($17 or $20/mo), Max ($100 or $200/mo) and Team seats, or pay per token on the API. Real monthly cost worked out. Article Nov 2, 2026 ## Fireflies.ai Pricing 2026: Plans, AI Credits and What a Team Pays Fireflies.ai pricing in 2026: Free $0, Pro $10 and Business $19 per seat a month billed annually, Enterprise $39. What AI credits cost and what a 10-seat team pays. Article Nov 2, 2026 ## How Much Does an AI Chatbot Cost in 2026? Real Prices per Conversation AI support chatbot prices in 2026: Intercom Fin $0.99 per outcome, Help Scout $0.75 per resolution, Chatbase from $32/mo. Costs at 100, 1,000 and 5,000 chats. Article Nov 2, 2026 ## How to Use Copilot in Excel in 2026 (Plans, Steps, Prompts) Open the Copilot icon in Excel, pick edit, plan or chat mode and ask in plain English. Which plan you need, from $9.99/mo, plus 10 prompts to copy. Article Nov 2, 2026 ## Zapier vs n8n 2026: Which Automation Tool Costs Less for Your Workflows Zapier bills every action step, n8n bills each full workflow run. Plans, a cost table for 2, 5 and 10-step workflows, AI features and who should pick which. Article Nov 1, 2026 ## Best Digital Signage Software in 2026: What 10 Screens Cost on Each Nine digital signage tools priced for 10 screens and three users on 19 Oct 2026, billed yearly and monthly, with free-plan limits and player costs. Article Nov 1, 2026 ## Is Asana Free? Personal Plan, Limits and Costs Asana has a free Personal plan, but its current two-seat limit matters. Compare features, older plans, and the cost of upgrading. Article Nov 1, 2026 ## Is ClickUp Free? Free Forever Limits for Teams ClickUp offers a Free Forever plan with unlimited tasks, but storage and other workspace limits can affect a growing team. Article Nov 1, 2026 ## Is Loom Free? Starter Limits and When to Upgrade Loom's Starter plan is free, with limits on screen recording length and videos per person. Find out whether it fits your team. Article Nov 1, 2026 ## Is Otter.ai Free? Basic Plan Limits and Upgrade Costs Otter.ai has a free Basic plan. See its monthly minutes, per-recording limits, lifetime imports, and the cost of upgrading. Article Nov 1, 2026 ## Newsletter Engagement by List Size: What 6 Lists on One Platform Actually Report Click-to-open falls 2.1x from a 28,051 subscriber list to a 797,381 one, measured the same way on the same platform. Open rates do not follow the same pattern. Read 2026-11-01. Article Oct 31, 2026 ## Best Cookie Consent Tools in 2026: What 25,000 Pageviews Really Cost Nine cookie consent tools priced for one site at 25,000 pageviews a month on 19 Oct 2026: Cookiebot's free plan fits, iubenda starts at $5.99 a month billed yearly. Article Oct 31, 2026 ## Cheaper Salesforce Alternatives in 2026: What 10 Seats Cost Five CRMs that cost less than Salesforce Starter Suite for 10 seats billed annually, with the features each one leaves out, as of October 2026. Article Oct 31, 2026 ## Is Airtable Free in 2026? Records, Users and Plan Limits See Airtable Free's record, editor and automation limits, plus what a four-person team pays for the Team plan.