Two products that overlap more than most pairs on this site. Both answer Instagram comments with a DM, both run on Meta's official API, and both are small enough that a person can set one up in an afternoon. The interesting difference is what each company decided to charge for.
Their pricing, from their page
Their pricing page, checked on 21 October 2026, lists four single-account plans and shows the yearly price by default. Free is $0 with 500 DM automations a month, up to five automated posts, three trigger words, AI comment replies and one Instagram account, with no card. Legend Pro is $12 a month, or $9.99 a month billed yearly, and covers unlimited automation at up to 800 an hour, Instagram and Facebook automation, story, Live and next-post triggers, post scheduling with the DM attached, email and phone collection, and a follow-before-link gate. Trendsetter is $29.99 a month, or $24.99 billed yearly, and adds the visual Flow Editor with an AI agent node that runs on your own OpenAI, Claude, Gemini or DeepSeek key, Messenger flows, boosted Reels and Meta Ads automation, viral mode and DM queues, link-open analytics, and API, webhook and MCP access, at up to 2,000 an hour. Trendsetter Pro is $59.99, or $49.99 billed yearly, removes the hourly limit and adds advanced account safety, smart slowdown, priority processing and WhatsApp support. Paid plans come with a seven-day free trial.
There are also two multi-account plans, for 3 and 10 accounts, and the page states there are no per-contact fees on any plan. It describes the product as built on Meta's official API, and InstantDM as a Meta Business Partner.
Ours, for contrast
You do not need a monthly plan to run templated replies. One credit is one AI-written reply. A reply sent from a template you wrote is free, however many people it goes to, because a repeated question does not need a model. Nothing is metered per contact, per follower or per conversation. Comment replies carry no cap at all, on any plan. DMs on our free tier do — 1,000 every rolling 30 days — which Lite removes for $4 a month. InstantDM's Free plan stops at 500 DM automations a month, and the plan that removes its cap is Legend Pro at $12 a month, or $9.99 billed yearly. Our paid plans are listed on the pricing page.
Free tier: 100 credits, 1,000 DMs every 30 days, no card. Packs: $3.99 for 1,000 credits, $14.99 for 4,500, $39.99 for 12,000.
A flat monthly plan
A per-reply meter
Ask which sentence you would rather say: “it is ten dollars a month whatever happens”, or “it cost nothing this month because nothing needed writing”.
The comparison people actually mean
Most people choosing between two tools this similar are not comparing feature tables. They are asking which one they will trust with an account they cannot afford to have embarrass them.
That question is answered by what a tool does in the awkward moment, not the happy one. Ours runs sixteen checks in a fixed order before every send: kill switch, connection, takeover, auto-reply switch, complaint pause, window, dedupe, burst, bot loop, cooldown, quiet hours, account limits, rate budget, free DM cap, credits, content safety. The first failure ends the attempt and writes its reason into Activity, so a reply that never went out is a line you can read rather than something you notice a week later. Takeover sits third on purpose — press Take over in Inbox, or reply from Inbox, and the automation stands down immediately rather than finishing its draft first. Replying in the Instagram app does not pause it.
Test both the same way
- 01
One post, one keyword, both tools
Do not point both at the same trigger or the same person will get two answers. Give each tool its own post for a week.
- 02
Comment twice from a second account
Dedupe should catch the second one. If a tool sends two identical DMs to the same person, you have learned something important cheaply.
- 03
Comment at midnight
Quiet hours are a promise about your brand, not a nicety. Check the reply waited.
- 04
Take over mid-thread
On ours that means Take over in Inbox. The automation should notice and stop. This is the check most people never run and most regret not running.
- 05
Read twenty replies
Would you have sent those? That is the whole decision, and no dashboard answers it.
The clock neither of us controls
Both products work through the official Instagram API, so both live inside the same two windows: a comment can be answered for 7 days, a DM for 24 hours after that person's last message. Cold messaging people who never contacted you is not a permission any vendor on the official API holds.
That matters when you read pacing features on either side. Rate handling — ours is the rate budget, theirs is described as hourly limits, DM queues, overload handling and, on the top plan, smart slowdown — is not a way around a limit. It is a way of staying inside one gracefully when a post travels and the queue is suddenly nine hundred long. Worth testing on purpose rather than discovering live, and the shape of it is set out in is Instagram DM automation safe.
Where each of us lands
If Facebook Page comments and Messenger matter, if a follow gate is how your lead magnets work, if you want posts scheduled with the DM attached, or if you want webhooks and an API to build on, InstantDM lists all four and we list none of them. That is a real answer and it should win where it applies.
If your Instagram inbox is mostly the same handful of questions and you would rather not carry another monthly subscription for it, our templated tier handles that volume for nothing and credits cover the rest. Start with 100 credits and no card, try it with a pretend comment first, and read what the free tier actually gets you before you assume it is a trial in disguise.
For the wider field, every tool we are asked about is listed with the date each was last read, the ManyChat alternative page covers the most common switch, and our methodology explains what we will and will not say about a competitor.