The Decision in One Sentence
Choose Smith.ai if you need 24/7 coverage, AI automation, or outbound follow-up on web leads. Choose Ruby if the quality of the live caller experience is your primary benchmark and Saturday coverage meets your needs.
Where They Are Different
What every call goes through: Smith.ai uses AI for routine calls and live agents for complex ones. Ruby uses live human agents on every single call without exception. This is the most fundamental difference between the two services and it determines everything else in this comparison.
Coverage hours: Smith.ai operates 24 hours a day, 7 days a week including Sundays and holidays. Ruby covers Monday through Saturday with extended hours. If your business receives important calls on Sundays - medical practices with urgent patient questions, real estate agents on weekend showings, law firms handling emergency matters - Ruby cannot cover those calls without a supplemental service.
Outbound follow-up: Smith.ai can initiate outbound calls and texts to web form leads within minutes of submission. Ruby is strictly inbound. For any business running digital advertising that generates web leads alongside phone calls, this capability alone often justifies choosing Smith.ai.
Agent quality: Ruby's agents score 9.5 out of 10 in our evaluation versus Smith.ai's live agents at 9.0. Ruby hires fewer than 2 percent of applicants. The quality difference is real and most noticeable on emotionally sensitive calls where Ruby's warmth and training create a meaningfully better caller experience.
Pricing: What You Actually Pay
Both services are priced comparably at entry level but bill differently in ways that matter at volume.
Smith.ai bills per call. The Starter plan is $285 per month for 30 calls. At 90 calls per month, the Basic plan is $690. Overage is $8.50 per call above your plan. AI-handled routine calls count against your plan. Live agent calls count the same.
Ruby bills per minute. The Starter plan is $235 per month for 100 minutes. A business averaging 5-minute calls at 30 calls per month consumes 150 minutes and hits overage at $2.35 per minute, bringing effective monthly cost to $352. At 60 calls per month with 8-minute average duration, Ruby costs over $1,000 per month in overage.
The practical result: at low call volumes under 30 calls per month, Ruby is often less expensive. At moderate to high volumes, Smith.ai's per-call model typically costs less because AI handles a percentage of calls without escalating to a live agent.
Who Each Service Is Right For
Choose Smith.ai if...
- You need 24/7 coverage including Sundays
- You run digital ads and want web lead follow-up
- Your call volume exceeds 30 to 40 calls per month
- You use Clio, Salesforce, or HubSpot for CRM
- AI handling routine calls reduces your cost meaningfully
Choose Ruby if...
- Every caller reaches a premium live human without exception
- You serve professional services clients where first impression is brand
- Saturday coverage meets your after-hours needs
- Call volume is under 30 calls per month
- Caller experience quality outweighs cost efficiency
They are not mutually exclusive. Some firms use Smith.ai for 24/7 AI coverage and web lead follow-up while using Ruby as their primary live receptionist during business hours. The combined cost is the sum of both subscriptions, but the combined capability covers every scenario both services cannot cover alone.
