F5Bot vs Reddinbox in 2026: free keyword alerts vs natural-language social research
F5Bot is a free, continuous keyword alerting service for Reddit, Hacker News, and Lobsters. Reddinbox is a paid research agent that answers natural-language questions across Reddit, X, Bluesky, Hacker News, and Facebook, with spam and AI-post filtering built in.
F5Bot
Reddinbox- F5Bot has a genuinely free tier with no credit card required. Reddinbox has no permanent free plan, only a trial with no credit card needed, before pricing starts at $39 a month for Starter.
- F5Bot matches exact keywords or, on the Ultra plan, described intent. Reddinbox takes full natural-language questions and researches across Reddit, X, Bluesky, Hacker News, and Facebook in a single query.
- Reddinbox runs a detection pass to filter out spam and AI-generated posts before surfacing results, showing a count of what was removed. F5Bot has no equivalent filtering layer on any plan.
- F5Bot delivers continuous alerts within minutes of a new mention with no usage cap beyond keyword volume. Reddinbox is capped at roughly 100 conversations a month on Starter and 266 on Pro.
- F5Bot tops out at $58.33 a month for Ultra and includes a REST API with webhooks. Reddinbox's Pro plan costs $99 a month and does not list any API or CRM integration.
- Reddinbox packages findings into shareable Market Briefs, 3 a month on Starter and 5 on Pro. F5Bot has no report-generation feature of any kind, only raw email, RSS, or JSON alerts.
F5Bot and Reddinbox both cover Reddit and Hacker News, but they get there through opposite workflows. F5Bot is keyword-based and continuous: you define terms once, and it emails you within minutes any time those terms appear, for free. Reddinbox is question-based and on-demand: you type something like "why do marketers dislike Ahrefs?" in plain language, and it researches across five platforms, strips out spam and AI-generated posts, and returns a structured answer with source links. One never stops watching; the other answers a specific question well and then waits for the next one. The right pick depends on whether you need an always-on tripwire or a research assistant.
The tools at a glance
F5Bot
Know within minutes when your brand gets mentioned on Reddit, Hacker News, or Lobsters
F5Bot is a keyword alerting service that has run since 2017. You set your terms once, brand names, product names, competitor names, and it watches every post and comment on Reddit, Hacker News, and Lobsters, emailing you within minutes of a match. There is no query to run and nothing to prompt; it simply keeps watching.
The free tier is functional on its own, with no credit card required. Paid tiers add advanced filtering by subreddit and co-occurring terms, RSS and JSON feeds, and on the Ultra plan, AI semantic alerts that match described intent rather than exact strings, plus a REST API with webhooks and Slack or Discord routing.
What F5Bot lacks is any research or quality-control layer. Every match generates an alert regardless of whether the post is a genuine human conversation or low-quality noise, and there is no way to ask it an open-ended question, only to track terms you already know you care about.
| Feature | Free $0 | Power $14.17/mo | Ultra $58.33/mo | Enterprise Contact |
|---|---|---|---|---|
| Platforms covered | Reddit, HN, Lobsters | Reddit, HN, Lobsters | Reddit, HN, Lobsters | Reddit, HN, Lobsters |
| Advanced filtering | ✗ | ✓ | ✓ | ✓ |
| AI semantic alerts | ✗ | ✗ | ✓ | ✓ |
| REST API & webhooks | ✗ | ✗ | ✓ | ✓ |
| Slack & Discord routing | ✗ | ✗ | ✓ | ✓ |
Reddinbox
Multi-platform social research agent that filters spam to surface real audience signals
Reddinbox answers questions about your market, customers, and competitors using real conversations pulled from Reddit, X, Bluesky, Hacker News, and Facebook. You type a question in plain language rather than building a keyword list, and it retrieves relevant threads, strips out spam and AI-generated noise, then returns findings organized by theme with links back to every source.
The bot-filtering step is the feature Reddinbox leans on most, and the reasoning holds up: Reddit and Hacker News have both seen a real rise in AI-generated posts and low-quality accounts, and Reddinbox flags and removes those before they reach your results, showing a count of what got filtered out. Market Briefs then package a research session into a shareable document, 3 a month on Starter and 5 on Pro.
The tradeoff is usage caps and cost. Conversations are metered at roughly 100 a month on Starter ($39) and 266 on Pro ($99), which a team running daily research sessions can burn through in weeks. There is no permanent free plan, no listed API, and Facebook coverage is still marked as evolving.
| Feature | Starter $39/mo | Pro $99/mo |
|---|---|---|
| Platforms covered | Reddit, X, Bluesky, HN, Facebook | Reddit, X, Bluesky, HN, Facebook |
| Conversations per month | ~100 | ~266 |
| Market Briefs per month | 3 | 5 |
| Spam and bot filtering | ✓ | ✓ |
Head-to-head feature comparison
| Feature | F5Bot | Reddinbox |
|---|---|---|
| Primary function | Keyword mention monitoring and alerting | Natural-language social research agent |
| Platforms covered | Reddit, Hacker News, Lobsters | Reddit, X, Bluesky, Hacker News, Facebook |
| Query model | Continuous keyword matching, semantic on Ultra | On-demand natural-language queries |
| Spam / AI-generated post filtering | No | Yes, removes AI-generated and spam posts before results |
| Structured insight reports | No, raw alerts only | Yes, Market Briefs, 3/mo Starter, 5/mo Pro |
| Alert or result speed | Minutes | Minutes per query, gated by monthly conversation cap |
| Usage caps | Keyword volume limits by plan | ~100 conversations/mo Starter, ~266/mo Pro |
| Free tier | Yes, functional with no credit card | No, trial only, no credit card required to start |
| API access | Yes, REST API and webhooks, Ultra plan | Not listed |
| Credit card required for trial | No | No |
| Starting price | Free | $39/mo |
Which should you choose?
F5BotReddinboxReddinboxF5BotReddinboxF5BotF5Bot and Reddinbox both touch Reddit and Hacker News, but the overlap is mostly coincidental. F5Bot is a tripwire: cheap, always on, and dumb in the sense that it does not evaluate quality, it just matches keywords. Reddinbox is a research assistant: expensive per query by comparison, capped by conversation limits, but smart enough to strip out the AI-generated noise that has made raw Reddit search less reliable than it used to be. A team that needs both a constant listening layer and periodic deep-dive answers will end up paying for both, since neither substitutes for the other.
Bottom line
Run F5Bot first and keep it running indefinitely; it costs nothing, needs no maintenance, and catches every keyword match on Reddit, Hacker News, and Lobsters within minutes. Bring in Reddinbox at $39 a month when you have a specific question that needs a structured, multi-platform answer with spam filtered out, and treat the conversation cap as a budget to spend on your highest-value research questions rather than routine monitoring. Using F5Bot for the constant watch and Reddinbox for the occasional deep question is a more efficient split than trying to make either one do the other's job.
Frequently asked questions
Is F5Bot or Reddinbox better for filtering out spam and AI-generated Reddit posts?
Reddinbox is built specifically for this, running a detection pass that removes spam and AI-generated content before showing results and reporting how many posts were filtered out. F5Bot has no filtering layer at all, so every keyword match generates an alert regardless of post quality.
Can I ask Reddinbox a natural-language question the way I would ask ChatGPT?
Yes, that is the core interface: you type a question like "what is blocking trial users from upgrading?" and Reddinbox searches Reddit, X, Bluesky, Hacker News, and Facebook, then returns themed findings with source links. F5Bot only supports keyword tracking, not open-ended questions.
Does F5Bot have usage limits like Reddinbox's conversation cap?
F5Bot limits keyword volume by plan rather than capping the number of alerts you receive, so there is no equivalent to Reddinbox's roughly 100 monthly conversations on Starter or 266 on Pro. Once your keywords are set, F5Bot sends every matching alert with no additional query cost.
Why is Reddinbox more expensive than F5Bot?
Reddinbox starts at $39 a month because each query runs an AI research and spam-filtering process across five platforms, which is a heavier operation than F5Bot's keyword-matching alerts. F5Bot's free tier works because watching for exact keyword matches on three platforms is comparatively lightweight to run continuously.
Which platforms does Reddinbox cover that F5Bot does not?
Reddinbox covers X (Twitter), Bluesky, and Facebook in addition to Reddit and Hacker News, while F5Bot is limited to Reddit, Hacker News, and Lobsters only. If cross-platform research beyond those three is a requirement, F5Bot cannot help regardless of plan.