Price
Google Alerts is free. No paid plans, no premium tier, no limit on alert count. Setup takes one search term and a Google account.
Mention shows a single Company plan (mention.com/en/pricing/, modified 2026-07-02). The price is rendered client-side and does not appear in the page source. Checkthat.ai, pricingsaas.com, and Brand24’s alternatives page all report about $599 a month on an annual contract (2026-09-10). API access and historical data are unpriced add-ons available through the sales process. There is no self-serve signup. Mention discontinued its Solo, Pro, and ProPlus self-serve tiers in July 2025 (communitytracker.ai/blog/mention-review, 2026-09-10).
The price gap is about $599 a month. Google Alerts is free with no premium option. Mention costs more than most mid-market monitoring tools and is sales-led only. Mention removed its publishing and engagement features in January 2026 and directs users to Agorapulse for those workflows.
Sources
Google Alerts covers whatever Google indexes: web pages, news, blogs, videos, and discussions. Reddit post titles get indexed; most comments do not. Hacker News stories appear; comments are sparse. Discourse forum threads, GitHub issues, and Bluesky posts do not appear.
Mention claims one billion sources. Its platform landing pages cover Facebook, Instagram, TikTok, X, and the web. It lists Reddit, LinkedIn, YouTube, and 75 review sites on the pricing page. No pages exist for Hacker News, Discourse, Bluesky, Mastodon, GitHub, Stack Overflow, or Product Hunt.
Mention covers more social platforms than Google Alerts. Google Alerts catches web pages that Mention might miss because it covers whatever Google indexes. Neither covers developer sources like Hacker News comments, Discourse forums, or GitHub issues. Mention lists Reddit, LinkedIn, YouTube, and 75 review sites on its pricing page, but has no dedicated landing pages for any of them (mention.com/en/pricing/, 2026-09-10).
Agent surface
Google Alerts has no agent surface. No API, no webhooks, no MCP, no llms.txt. The only programmatic access is parsing email or polling an RSS feed.
Mention has an API at dev.mention.com with OAuth2, supporting alerts, mentions, statistics, and per-network metadata. The API marketing page was last modified in September 2020 and says "Request Access." API access is a paid add-on. There is no llms.txt, no MCP server, no OpenAPI spec, and no machine-readable pricing.
Mention’s API documentation covers alert CRUD, mention retrieval and streaming, statistics, per-network metadata for X, Instagram, YouTube, Pinterest, TikTok, Facebook, and LinkedIn, plus a rate limits appendix. The rate limits page did not render on 2026-09-10. No OpenAPI or Swagger file exists. The documentation has not been visibly updated since 2020.
Neither product pushes to an agent when a mention lands. Google Alerts sends email or RSS. Mention delivers through its dashboard, email, and Slack.
Freshness and trust
Google Alerts is a Google product. It has no marketing site, no blog, no pricing page, and no E-E-A-T signals to evaluate beyond Google’s own brand. It works or it does not. It was launched in 2003 and has been running for over 23 years.
Mention published zero posts in 2026. Its most recent post is dated 2025-04-24 (mention.com/en/wp-json/wp/v2/posts, 2026-09-10). Its 58 head-to-head blog pages and 14 alternatives pages all carry 2025 in the title. It has 252 author archive pages, 46 customer stories including Ogilvy, Edelman, and McCann, and a G2 badge on the homepage. It removed its publishing and engagement features in January 2026 and directs users to Agorapulse for those workflows. The homepage still advertises them.
What each one exports
Google Alerts exports to email or RSS. There is no CSV, no API, and no webhook. The only programmatic path is parsing the email body or polling the RSS feed. Alerts carry a title, a URL, and a snippet. There is no sentiment, no metadata, and no retention beyond what your email client keeps.
Mention’s API at dev.mention.com supports alert CRUD, mention retrieval, streaming mentions, statistics, and per-network metadata for X, Instagram, YouTube, Pinterest, TikTok, Facebook, and LinkedIn (dev.mention.com, 2020). The API uses OAuth2. The rate limits page did not render on 2026-09-10. API access is a paid add-on at an undisclosed price. CSV export is available from the dashboard.
Who should pick which
Keep Google Alerts if free email alerts for web pages are enough. It is the right tool for a founder who wants to know when someone writes about their product on a public website.
Move to Mention if you need real-time social monitoring across Facebook, Instagram, TikTok, X, and the web, with sentiment analysis, reporting, and a dashboard. Expect to pay about $599 a month through a sales process (checkthat.ai, 2026-09-10).
Use both together. Google Alerts is free and catches what Google indexes. Mention catches social platforms that Google does not index. The backstop and the sensor cover more than either alone.
The third option
discatch is a social listening API and alert system built for agents. Its free tier includes Hacker News alerts at one-hour intervals with no credit card. API and MCP are planned on every tier. Catches push to a webhook, a Claude Code command, or a Doozy todo when a mention appears.