title: '"Unlimited messages" on your chatbot plan — what that actually means in 2026' slug: 'chatbot-unlimited-messages-real-cost-2026' description: 'No major chatbot platform offers unlimited messages. They all have caps, credits, or per-resolution fees. Here is the real per-message cost math across five platforms, so you know what you are actually buying at $19–$49/month.' publishedAt: '2026-05-25' tags: [ 'AI chatbot', 'chatbot pricing', 'unlimited messages', 'indie SaaS', 'chatbot comparison 2026', 'chatbot cost', ] author: 'Saurav' keywords: 'chatbot unlimited messages, ai chatbot message limits, chatbase message credits explained, chatbot pricing per message 2026, what does unlimited mean chatbot, chatbot monthly message cap, how many messages chatbot plan' wordCount: 1280 draft: false
By Saurav · saavos
[!TLDR] No major chatbot platform offers genuinely unlimited messages. Chatbase gives you 500 message credits at $32/month. Tidio's Lyro caps at 50 conversations on their Solo plan. Intercom Fin doesn't cap you — it charges $0.99 per resolved conversation instead, which is worse. The only honest position is a visible monthly message limit with a flat price. Here is what every major platform actually gives you, and what you pay per message at real usage levels.
I'm building saavos, so I have a stake in this. But I also spent four months testing competitors on my own sites before I launched anything. What I kept seeing on every pricing page was some variation of "unlimited" — or at least no obvious number — until I dug into the fine print.
Here is the real count.
Chatbase: 500 message credits, not 500 conversations
Chatbase's Hobby plan is $32/month on annual billing. The limit is "500 message credits per month."
A message credit is not a conversation. It is one exchange — one user question plus one bot reply. A visitor who asks five follow-up questions in one session uses five credits, not one.
Do the math at different usage levels:
| Monthly visitor sessions | Avg exchanges per session | Credits used | Credits left at Hobby |
|---|---|---|---|
| 20 sessions | 5 exchanges | 100 | 400 |
| 100 sessions | 5 exchanges | 500 | 0 |
| 150 sessions | 5 exchanges | 750 | Over cap |
At 100 visitor sessions per month with five exchanges each, you are at your exact limit. If you have a decent month — a Product Hunt launch, a newsletter mention, a Hacker News post — you blow through it.
This is not a criticism of Chatbase. It is a real product with real features. But "500 message credits" is a specific, meaningful constraint that does not appear prominently on the pricing page. You find it in the feature table, third row down.
Tidio: 50 Lyro conversations on Starter, not unlimited AI chat
Tidio's Solo plan is $24.17/month. But the 50 Lyro AI conversations included are a one-time lifetime allocation, not a monthly reset. To get monthly Lyro conversations, you need the Growth plan at $49.17/month for 200/month.
Tidio positions this reasonably — the product is primarily a live-chat platform, and Lyro is an add-on. But if you land on Tidio because you want AI chatbot support and you pick Starter, you will exhaust your 50 Lyro conversations within the first two weeks of a modestly busy site.
The upgrade path to 200 Lyro conversations at Growth is $49.17/month. That is more than double the Starter price for a 4× increase in AI message volume.
Intercom Fin: no cap, but you pay $0.99 per resolved conversation
Intercom Fin does not have a message cap. It charges $0.99 per resolved conversation on top of per-seat platform fees starting at $29/seat/month.
So it is technically "unlimited" — in the same way your phone data is "unlimited" until you hit the throttle.
At 100 resolved conversations, you owe $99 in resolution fees. Plus seats. At 200 resolutions — a realistic number for a growing SaaS site — that is $198 in resolution fees before you have paid a single dollar toward the base platform.
I wrote about this math in depth in the outcome-pricing post. The short version: per-resolution pricing punishes you for having a good chatbot. When the AI improves and resolves more conversations, your bill goes up. You did not change anything. The product got better and you got a higher invoice.
SiteGPT: 4,000 messages at $39/month — the most generous cap in this range
SiteGPT's Starter is $39/month and includes 4,000 messages per month. That is the most messages per dollar in the $20–$50 range.
At 200 visitor sessions with 10 exchanges each, you use 2,000 messages. You have room. If your site handles 800 monthly sessions at 5 exchanges each — 4,000 messages — you hit the cap at $39.
The message limit is straightforward. SiteGPT publishes it prominently, in the table, labeled clearly. For higher-volume sites in the sub-$50 bracket, SiteGPT's message volume is a real differentiator.
The tradeoff: no permanent free plan (7-day trial only), one bot at Starter vs two at comparable prices, and no API access until the $79/month tier. More in the SiteGPT vs saavos comparison.
FastBots: 2,000 messages at $39/month
FastBots Essential is $39/month and includes 2,000 messages/month. That doubled from around $19/month earlier in 2026. At 2,000 messages, FastBots gives you roughly half the volume per dollar that SiteGPT does at the same price.
What FastBots has that SiteGPT does not: live agent takeover. A visitor chats with the bot, you get pinged, you jump in. For founders who want human handoff at the entry tier, FastBots is the only option in this price range. More in the FastBots price-change post.
saavos: the limits are in the table on the pricing page
I built saavos. So I will be direct about what this is and is not.
saavos's Solo plan is $9/month and includes 1,000 messages per month. Builder is $24/month and includes 3,500 messages — that's the top tier. There's no per-message overage on any plan: the bot pauses at your monthly cap and you never get a surprise bill.
These numbers are in the pricing table. Not in fine print. Not in a "view details" accordion three clicks deep.
At 200 visitor sessions per month with 5 exchanges each, you use 1,000 messages at Starter. That is exactly the cap. If you regularly run above 200 active sessions per month, you are either at the top of Starter or a Builder plan user.
The preview is no-card dashboard testing with no expiry and no credit card. Enough to train the bot on your actual docs and run 10 full visitor sessions to test quality before committing.
The side-by-side math
Here is what each platform costs per message at real usage levels. This is the number that matters — not the tier price, but the effective cost per conversation exchange.
| Platform | Plan price | Message limit | Cost per message at 100/mo | Cost per message at 500/mo | Cost per message at 1,000/mo |
|---|---|---|---|---|---|
| Chatbase | $32/mo | 500 credits | $0.32 | $0.064 | Over cap |
| saavos | $9/mo | 1,000 | $0.19 | $0.038 | $0.019 |
| SiteGPT | $39/mo | 4,000 | $0.39 | $0.078 | $0.039 |
| FastBots | $39/mo | 2,000 | $0.39 | $0.078 | $0.039 |
| Intercom Fin | $29/seat + $0.99/resolution | No cap | ~$1.28+ | ~$1.00+ | ~$1.00+ |
| Tidio Growth | $49.17/mo | 200 Lyro convos | $0.49 | Over cap | Over cap |
Pricing confirmed from vendor pricing pages, 2026-05-18. Intercom Fin figure includes $29/seat base amortized over the conversation count.
The table is not designed to make saavos look best at every number. SiteGPT wins on pure message volume per dollar at higher usage. Intercom Fin is genuinely the right product for companies with support teams running hundreds of tickets per day and a budget to match. Tidio wins if you need live chat and AI in one interface with ecommerce integrations.
The point is: the number exists. It is a real constraint that shapes your actual monthly experience. Knowing it before you sign up is better than discovering it after your first busy week.
What "unlimited" usually means in practice
When a chatbot pricing page says "unlimited messages" in a feature row, it almost always means one of three things:
- Unlimited within a conversation (not unlimited conversations — the conversation count is capped).
- Unlimited on the channel (e.g., no limit on live chat, but the AI component is metered separately).
- No hard cap, but throttled (Intercom Fin's effective model — you pay per resolution so there is no cap, but the marginal cost stays high).
None of these is false advertising exactly. But none of them means what "unlimited" sounds like to a founder trying to budget their tooling.
The cleaner version of this is a visible number in the pricing table. 500 credits. 1,000 messages. 4,000 messages. Those are honest numbers you can plan around.