Erlin vs Writesonic (2026): which should you pick?

Pick Erlin if

• Fits if you want AI tracking and article writing in one subscription, from Standard
• Works for teams that want visits from AI answers tied to leads through GA4

Look elsewhere if

• Not for you if you want to pay monthly, as every plan is billed yearly
• Skip it if Google AI Overviews matters, since it isn't among the engines listed
• Pricey if you need Claude or an API, which start at Pro for $397 a month
• Too light for writing on Starter, which has no content generation
• Watch out: there's no free trial; each plan opens with a 7-day trial that costs $7

Pick Writesonic if

• Fits if you want the gaps found and the articles to fill them written in one place
• Works for solo marketers, since Starter is built for one user and one project

Look elsewhere if

• Skip it if Perplexity, Claude or AI Mode matter, as all need Enterprise
• Pricey if your team grows, at $50 a month for each extra user, up to 5 in all
• Tight if you want sentiment, which starts at Growth for $399 a month
• Watch out: the full Action Center is Enterprise only, and Growth gets just a limited trial of it
• Too light for more than one market or project, as Starter allows one of each

Erlin

• Plans are billed yearly; each starts with a 7-day trial that costs $7 rather than a free one.
• Starter tracks only ChatGPT and Perplexity and has no content writing; Gemini starts at Standard and Claude at Pro.
• API access starts at Pro, at $397 a month billed yearly.
• Lead qualification is a beta add-on with pricing on request; a done-for-you service, Erlin Select, is by application.

Writesonic

• Self-serve plans track only ChatGPT, Gemini and Google AI Overviews; Perplexity, Claude, Copilot, Grok and AI Mode need Enterprise.
• Extra users cost $50 a month each, up to 5 users in total on Basic and Growth.
• Growth can add 20 articles for $100; the full Action Center is Enterprise-only.
• Starter is limited to 1 user, 1 project and 1 market.

Erlin

Prompt discovery

Suggests the questions buyers in your industry ask AI, with the intent, buying stage and demand Erlin estimates for each.

Visibility and competitors

Tracks mentions, sentiment and share of voice across the engines on your plan and shows which brands are recommended instead.

Opportunities and citations

Lists the sources AI answers draw on in your industry and ranks fixes by effort and impact so they can be assigned and tracked.

Content in your brand voice

From Standard, researches, outlines and drafts articles or improves existing pages, guided by a Brand Memory of your products, voice and rules.

AI traffic tracking

Connects Google Analytics 4 and Search Console to show visits and leads that trace back to AI answers, on every plan.

Lead qualification add-on

A website chatbot that answers and qualifies visitors, email and Telegram follow-up, and a CRM view; in beta, priced on request.

Writesonic

AI visibility tracking

Tracks set prompts daily on ChatGPT, Gemini and Google AI Overviews on self-serve plans, with ads monitoring included.

AI article writer

Writes articles aimed at both search and AI answers: 15 a month on Starter, 25 on Basic and 50 on Growth.

Site audits

Crawls the site for problems, from 10 audits of 100 pages on Starter to 50 audits of 2,500 pages on Growth.

Action Center

Prioritized on-page, off-page and technical actions. Growth gets a trial of 5 off-page and 5 on-page actions a month; Enterprise gets full access.

Agentic workflows

Agents that run content and SEO tasks; self-serve plans get a set number of trial runs, from 10 to 100.

Sentiment and AI search tools

Growth adds sentiment analysis; Enterprise adds AI search volume, Brand Explorer, Prompt Explorer, Page Tracker and alerts.

Erlin

• Starter$47

  per month for 50 prompts, billed annually ($564 a year)

  ChatGPT and Perplexity, 1 workspace, 10 team members and weekly reports. No content generation.

• Standard$197

  per month for 150 prompts, billed annually ($2,364 a year)

  Adds Gemini, 3 workspaces, 50,000 content words a month (about 30 articles) and chat support.

• Pro$397

  per month for 400 prompts, billed annually ($4,764 a year)

  Adds Claude, 5 workspaces, 50 team members, 200,000 words a month, API access and Slack support.

• EnterpriseCustom

  Unlimited workspaces, custom prompt and word limits, a custom LLM or RAG setup, custom integrations and an SLA.

Writesonic

• Starter$79

  per month for 50 prompts, billed annually ($99 billed monthly)

  ChatGPT, Gemini and AI Overviews tracked daily, 15 AI articles and 10 site audits of 100 pages a month, 1 user and 1 project.

• Basic$199

  per month for 100 prompts, billed annually ($249 billed monthly)

  300 answers tracked daily, 25 articles and 20 site audits of 1,200 pages a month, 2 users and 1 project.

• Growth$399

  per month for 200 prompts, billed annually ($499 billed monthly)

  Adds sentiment analysis and a limited Action Center trial, with 50 articles and 50 site audits a month, 3 users and 2 projects.

• EnterpriseCustom

  All 9 AI platforms, custom prompts, regions and languages, the full Action Center, Looker Studio, SSO/SAML and an AI search strategist.

Erlin

No public discounts listed.

Writesonic

• Annual discount

  Save 20% with annual billing

  Writesonic's pricing page lists a 20% saving on annual billing: Starter is $79 a month instead of $99, saving $240 a year.