Ably Pricing in 2026: Why Your Bill Is Deliveries, Not Sends
Ably pricing in 2026 in real numbers: the three-meter model, why a message is counted per delivery, three worked 30-day bills, and the one lever that cut a sample bill 48.8%.
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Quick answer (2026): Ably's realtime meter has three parts: messages at $2.50 per million, connection minutes at $1.00 per million, and channel minutes at $1.00 per million, on top of a Free tier ($0), Standard ($29/mo), or Pro ($399/mo) base. The number that wrecks most estimates is that a "message" is counted per delivery, not per send: publish once to 100 subscribers and the meter records 101 messages. For persistent apps the bigger surprise is the minutes meters, which quietly bill every connection and every channel for as long as they stay open. Below is the arithmetic, three worked 30-day bills, and the one architectural lever that cut a sample bill by 48.8%.
The three meters, in plain numbers
Ably (pricing, 2026) bills usage across three dimensions on top of the base plan:
- Messages: $2.50 per million (volume discounts down to $0.50 per million).
- Connection minutes: $1.00 per million minutes (down to $0.20 per million at volume).
- Channel minutes: $1.00 per million minutes (down to $0.20 per million at volume).
- Data transfer: $0.25 per GiB beyond the included allowance.
Base plans in 2026: Free ($0, includes 6M messages, 200 concurrent connections, 200 channels), Standard ($29/mo, up to 10k connections), Pro ($399/mo, up to 50k connections), Enterprise (custom).
That looks tame. Two of those meters are where real bills come from, and neither is the one people budget for.
The one word that changes the bill: deliveries
Ably counts a message every time one is delivered, not every time one is sent. Their own documentation (message counting, 2026) puts it plainly: if a user publishes a message and 10 users receive it, that counts as 11 messages. History reads and integration egress count too.
So your real message volume is not "messages sent." It is:
billable messages = publishes x (1 + average subscribers per channel)
That average-subscribers term is a multiplier, and it is the whole ballgame. The same one million publishes cost wildly different amounts depending on how many people are listening.
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| Avg subscribers per channel | Billable messages per 1M publishes | Cost at $2.50/M |
|---|---|---|
| 1 (one-to-one) | 2.0M | $5.00 |
| 5 | 6.0M | $15.00 |
| 25 | 26.0M | $65.00 |
| 100 | 101.0M | $252.50 |
| 1,000 (broadcast) | 1,001.0M | $2,502.50 |
Same publish volume. A 500x spread on the bill. If you estimated Ably by counting the messages your servers emit, you undercounted by your fan-out factor.
The minutes meters: what "always on" actually costs
A 30-day month holds 43,200 minutes (30 x 24 x 60). A connection that stays open the whole month burns 43,200 connection minutes. At $1.00 per million:
- One always-on connection: 43,200 minutes = $0.0432 per month.
- One always-on channel: 43,200 minutes = $0.0432 per month.
Fractions of a cent. That is exactly why they get ignored, and exactly why they surprise people at scale. Ten thousand always-on connections is 432 million connection minutes, or $432 a month, before a single message is sent. One channel per device across 20,000 devices is another $864 a month in channel minutes alone.
Three worked 30-day bills (2026 list rates)
These use published per-unit rates applied to usage. They are the usage meter only; your plan's base fee and included allowance sit on top.
Cohort A: support-chat widget. 300 average concurrent connections, 300 channels, 2M publishes at fan-out 2 (6M messages).
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| Meter | Volume | Cost |
|---|---|---|
| Messages | 6.0M | $15.00 |
| Connection minutes | 12.96M | $12.96 |
| Channel minutes | 12.96M | $12.96 |
| Usage total | $40.92 |
Messages are 37% of usage; the minutes meters are 63%. Note the 6M messages sit right at the Free tier allowance, so on a paid plan this app is mostly paying for connected time, not chatter.
Cohort B: live broadcast (scores, auctions). 5,000 average concurrent viewers, 50 match channels, 500k publishes at fan-out 100 (50.5M messages).
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| Meter | Volume | Cost |
|---|---|---|
| Messages | 50.5M | $126.25 |
| Connection minutes | 216.0M | $216.00 |
| Channel minutes | 2.16M | $2.16 |
| Usage total | $344.41 |
Here the score updates are cheap. The 5,000 people watching are 63% of the bill. Broadcast apps pay for the audience sitting connected, not the events.
Cohort C: IoT / presence. 20,000 devices, one channel each, 5M telemetry publishes at fan-out 1 (10M messages).
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| Meter | Volume | Cost |
|---|---|---|
| Messages | 10.0M | $25.00 |
| Connection minutes | 864.0M | $864.00 |
| Channel minutes | 864.0M | $864.00 |
| Usage total | $1,753.00 |
Messages are 1.4% of this bill. The minutes meters are 98.6%. The killer is one-channel-per-device.
The one lever: share channels
Cohort C spends $864/mo on channel minutes because it opens 20,000 channels, one per device. If device isolation allows multiplexing (namespacing many devices onto shared channels with client-side filtering), 20,000 channels become 200 channels of 100 devices each:
- Channel minutes: 864M drops to 8.64M, from $864.00 to $8.64.
- New usage total: $897.64, down from $1,753.00.
One architectural change. A 48.8% cut to the whole bill, with no change to how many messages move. For fan-out apps the equivalent lever is coalescing publishes: a live-cursor feed throttled from 30 updates per second to 10 sheds two-thirds of its billable deliveries, because message cost scales with publishes times audience.
Ably vs Pusher vs self-host
Ably is not the only meter shape, and the shape matters more than the sticker price.
Pusher Channels (pricing, 2026) meters on peak concurrent connections plus messages per day, with no minutes meter at all. An app with many quiet-but-connected clients can be cheaper on Pusher (no per-minute bleed); a chatty app that blows past daily message caps can be cheaper on Ably. We broke Pusher's meter down in the Pusher pricing teardown.
- Self-host with an open-source, Pusher-protocol-compatible server like Soketi or Centrifugo removes per-message and per-minute cost entirely. You trade it for a VM (roughly $20 to $80/mo) plus the reconnection, presence, and scaling work you now own. That trade is the subject of our build vs buy at scale piece.
When Ably is worth it, and when it is not
Honest read for 2026:
- Worth it when you would otherwise build global edge presence, guaranteed ordering, reconnection, and protocol adapters yourself, and when your traffic is spiky. The minutes meter is fair for bursty apps: you pay only for connected time, not for provisioned capacity.
- Not worth it when you are a high-fan-out broadcaster at scale (the message meter compounds by your audience) or when your design opens one channel per entity across tens of thousands of entities (the minutes meters compound by count). At that point a self-hosted server or a plain SSE/CDN fan-out is often several times cheaper.
Price the meter you will actually hit. For most realtime apps that is not the message count on your dashboard; it is deliveries times audience, plus every minute you leave a connection open.
Sources
- Ably pricing page, 2026: https://ably.com/pricing
- Ably message counting documentation, 2026: https://ably.com/docs/pricing
- Pusher Channels pricing, 2026: https://pusher.com/channels/pricing/
- Soketi (open-source, Pusher-compatible server): https://github.com/soketi/soketi
Math check: at $2.50 per million and per-delivery counting, your message bill is publishes times (1 + audience), so a 100-subscriber channel makes one send cost as much as 101. Watch the multiplier, not the send count.
Written by
Diego AguirreFrequently asked questions
How does Ably pricing work in 2026?
Ably charges a base plan (Free $0, Standard $29/mo, Pro $399/mo, or Enterprise) plus usage across three meters: messages at $2.50 per million, connection minutes at $1.00 per million, and channel minutes at $1.00 per million, with data transfer at $0.25 per GiB. Volume discounts lower the message rate to as little as $0.50 per million and the minute rates to $0.20 per million.
Does Ably count a message once when I publish it?
No. Ably counts a message per delivery. Ably's own documentation states that if one user publishes a message and 10 users receive it, that counts as 11 messages. So your billable message volume is publishes multiplied by (1 plus the average number of subscribers per channel). History reads and integration egress also count.
What are connection minutes and channel minutes?
They are time-based meters. Every open connection accrues one connection minute per minute it stays connected, and every open channel accrues one channel minute per minute it stays active. A 30-day month has 43,200 minutes, so one always-on connection costs about $0.0432 per month and one always-on channel the same. These look trivial but scale with concurrency and with how many channels you open.
Which Ably meter usually costs the most?
It depends on the app shape. For a support-chat widget the minutes meters are roughly 63% of usage. For a live broadcast with thousands of concurrent viewers, connection minutes dominate. For IoT or presence apps that open one channel per device, connection and channel minutes can be over 98% of the bill while messages are almost free.
How can I cut an Ably bill?
The biggest lever is usually channel sharing. Multiplexing many devices or entities onto fewer shared channels, with client-side filtering, can cut channel-minute cost dramatically. In our IoT cohort, collapsing 20,000 per-device channels into 200 shared channels dropped channel minutes from $864 to $8.64, a 48.8% cut to the whole usage bill. For fan-out apps, coalescing or throttling publishes cuts billable deliveries proportionally.
Is Ably cheaper than Pusher?
Not universally, because the meters differ. Pusher Channels bills on peak concurrent connections plus messages per day, with no minutes meter. Apps with many quiet-but-connected clients can be cheaper on Pusher; chatty apps that exceed Pusher's daily message caps can be cheaper on Ably. Compare the meter you will actually hit, not the sticker price.
When should I self-host realtime instead of using Ably?
Consider self-hosting when you are a high-fan-out broadcaster at scale, where the per-delivery message meter compounds by audience, or when your design opens tens of thousands of channels. An open-source, Pusher-compatible server like Soketi or Centrifugo removes per-message and per-minute cost in exchange for running a VM plus owning reconnection, presence, and scaling yourself.
Related reading
Pusher Pricing in 2026: What You Actually Pay
Pusher Channels pricing in 2026 runs from a free Sandbox (100 concurrent connections, 200k messages/day) to $49 Startup, $99 Pro, $299 Business, and up to $1,199, billed on two meters: peak concurrent connections and messages per day. The trap is peak connections, because your plan must cover your highest simultaneous connection count, so a single 25-minute spike can push you from $99 to $499 for the whole month. This teardown works three real monthly bills, shows why the same app costs $99 on Pusher, about $278 on Ably, and about $630 on Liveblocks purely because each bills on a different meter, and does the self-host crossover math with Soketi.
Build vs buy: when DIY beats SaaS at scale
Build-vs-buy isn't a values debate, it's a breakeven date. SaaS wins early because it converts a big upfront build into a small monthly fee. DIY wins once your usage-based SaaS bill exceeds the fully-loaded cost of owning the code, typically around month 18 for infrastructure-style tools. This piece gives you the formula, a worked example, and the three traps that make teams build too early.
Trigger.dev Pricing 2026: What You Actually Pay
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