By M.W., Co-founder · Published October 5, 2026 · Last updated November 13, 2026
Real-time agent assist feeds a human agent answers, prompts and summaries during a live conversation. Since 1 October, three of the eight tools below have agreed to sell to bigger contact-center and CRM vendors. For buyers, that changes who the product is built for.
TL;DR: Agent assist makes a human seat faster, so companies that sell seats are buying it: Five9 agreed to pay about $325 million for Level AI on 5 November, and half this list now has a new owner or a pending one.
Methodology & sources
- Eight tools from page-one results for "real time agent assist". Ownership, deal terms, prices and G2 ratings re-checked against primary pages on 13 November 2026. Channel and AI-scoring capabilities were last verified 21 October 2026.
- Deals: Five9, Salesforce, TCN and Thoma Bravo announcements. Productivity: NBER's Generative AI at Work (5,179 agents). Costs: Gartner's February 2024 benchmark.
- Disclosure: this is Aissist's blog. Aissist sells an AI agent that resolves tickets and Agent Insight, which scores AI and human agents. Neither is ranked here, and Aissist has a stake in the argument.
What is AI agent assist, and how is it different from an AI agent?
AI agent assist suggests answers, next steps and summaries to a human during a live conversation; an AI agent talks to the customer itself and owns the resolution. The model can be the same. What differs is who closes the ticket.
| Model | Who owns the resolution | What the metric becomes |
|---|---|---|
| Real-time agent assist | The human, every time | Handle time and after-call work |
| AI agent with structured handover | The AI on routine tickets; the human on escalations | Resolution rate and cost per resolution |
| Post-call QA and conversation intelligence | Unchanged; it scores interactions after they end | QA score across AI and human agents |
Assist is judged by seconds saved per contact. An AI agent is judged by contacts a human never sees. Buy assist expecting the second result and you will get the first. Most tools on this list now bundle QA as well, which is where the measurable wins have been (our QA software comparison covers that market):
"We've gone from manually scoring 1-2% of our calls to using Level AI to score 100% of our calls!" — Angela Zander, Director of Operations, QuinStreet, via Level AI
The 8 best real-time agent assist tools in 2026, and who owns them now
The eight strongest real-time agent assist tools in 2026 are Balto, Cresta, Level AI, Observe.AI, Abstrakt, Capacity, Calabrio ONE and AmplifAI, and four of them now belong to a larger platform or are about to.
On 5 November 2026, Five9 agreed to acquire Level AI for approximately $325 million in cash, according to Five9's announcement, with closing expected in Q4 2026.
| Tool | Owner (13 Nov 2026) | Deal announced | Status |
|---|---|---|---|
| Balto | Independent | — | Independent |
| Cresta | Salesforce | 2 Nov 2026 | Pending; close expected Feb–Apr 2027 |
| Level AI | Five9 | 5 Nov 2026 | Pending; close expected Q4 2026 |
| Observe.AI | Independent | — | Independent |
| Abstrakt | TCN | 1 Oct 2026 | Closed; sold only to TCN customers |
| Capacity | Independent (bought its agent assist via Creovai, Oct 2025) | — | Independent |
| Calabrio ONE | Verint, owned by Thoma Bravo | Closed 26 Nov 2025 | Closed; now part of Verint |
| AmplifAI | Independent | — | Independent |
Salesforce did not disclose Cresta's price; The Information reported $2.7 billion, per CMSWire, which also puts the expected close in the first quarter of Salesforce's fiscal 2028.
Pricing checked 13 Nov 2026. In this agent assist software comparison, none of the eight publishes a dollar price. "Talk to sales" remains the category's most consistent feature.
| Tool | Best for | Channels | Scores AI agents | Price (13 Nov 2026) | G2 (13 Nov 2026) |
|---|---|---|---|---|---|
| Balto | High-volume voice sales and service | Voice | Yes | Quote only; per seat, every user counted | 4.8 (596) |
| Cresta | Assist, QA and AI agents from one vendor | Voice, chat, email | Yes | Not published | 4.3 (46) |
| Level AI | Voice and chat teams on Zendesk or Intercom; Level AI agent assist plus QA | Voice, chat | Yes, bot conversations | Not published | 4.6 (222) |
| Observe.AI | Regulated, voice-heavy enterprises | Voice | Its own voice AI | Quote only | 4.5 (307) |
| Abstrakt | Phone sales teams already on TCN | Voice | Not published | Not published | G2 page unavailable |
| Capacity | Mid-size voice centers wanting self-service too | Voice | Not as a product | Quote only; per agent hour | 4.7 (119) |
| Calabrio ONE | Existing Calabrio or Verint WFM shops | Via Verint | Yes, Bot Analytics | Quote only | 4.4 (447) |
| AmplifAI | Post-call evaluation of AI and human agents | Post-call only | Yes | Not published | 4.7 (21) |
Why is agent assist the first category to consolidate?
Agent assist consolidates first because it makes a human seat more productive, and the buyers are vendors whose revenue has long been counted in seats. It is the AI product that fits inside their existing price list.
Five9's CEO put it plainly in May:
"Our path to success is no longer about simply selling seats." — Amit Mathradas, CEO, Five9, via CX Today
The transition is not free. Five9 CFO Bryan Lee guided to about one point of adjusted EBITDA margin dilution in 2027 from the Level AI deal, and beri.net notes that investors in seat-based contact-center software worry AI shrinks the number of human agents being licensed.
That is the incentive problem a buyer should see. An assist layer owned by a seat seller earns most when you keep the seats and make each one faster. It earns less when the ticket never reaches a seat. We are not claiming any of these owners will sandbag their roadmaps; Five9 says Level AI will still be sold standalone to customers on other platforms. But Abstrakt already shows the other path: one month after the TCN deal, its pricing page says it is available only to TCN contact centers.
"Existing Cresta customers should watch whether Salesforce preserves what made Cresta valuable" — Christina McAllister, Principal Analyst, Forrester
Where does real-time agent assist hit its ceiling?
Real-time agent assist tops out at the speed of the human using it: every suggestion still needs a person to read, judge and send it, and the gain shrinks as agents gain experience. The NBER study Generative AI at Work found an AI assistant raised issues resolved per hour by 14% on average and 34% for novices, with little effect on experienced agents.
That is a training gain, and it removes no contacts from the queue. Gartner, meanwhile, predicts agentic AI will autonomously resolve 80% of common customer service issues by 2029, cutting operational costs by 30%. The novice-heavy routine queue that assist helps most is the one that disappears first. It is hard to get faster at a ticket you no longer receive.
Here is the arithmetic on one illustrative month of 10,000 contacts, starting from Gartner's $13.50 median cost per assisted contact ($135,000 a month):
| 10,000 contacts a month | Assist: faster human | Resolution: no human |
|---|---|---|
| Contacts a human handles | 10,000 | 1,700 |
| Assumption | 14% more issues per hour (NBER average) | AI resolves 83%, Aissist's published average; hard tickets left take 2× as long |
| Human support spend | $135,000 ÷ 1.14 ≈ $118,400 | 1,700 × $27 = $45,900 |
| Add | The assist licence (quote only) | 8,300 resolutions × your AI per-resolution price |
| What shrinks | Time per ticket | The number of tickets |
Assumes human cost scales with handle time. In the resolution column, cost per human ticket doubles while total human spend falls by two-thirds, which is why cost per ticket must be measured across AI and humans together. The 8,300 must be resolved, not deflected; a deflected ticket comes back as a reopen (deflection vs resolution rate).
How do you choose real-time agent assist software now?
Choose by who answers first in your queue, then by who owns the vendor and what that owner sells.
- If humans still answer most contacts, pick on live-guidance quality and CCaaS fit (Balto, Observe.AI, Capacity), because classic assist gains are largest there.
- If your assist vendor is pending sale, get roadmap, pricing and platform-support commitments in writing before renewal, because Abstrakt narrowed to one platform within a month.
- If your contact-center platform is not the buyer's, ask whether standalone support survives closing, because Five9 and Salesforce both promise it today and contracts outlast promises.
- If an AI agent already handles tier 1, require a structured pre-escalation brief: verified intent, steps already run, commitments made and the reason for escalation. At Weltrade, escalated cases reach the backend team with a summarized issue and clear next steps, not a transcript to reread. More in escalation management.
- If you are weighing more seats against AI, compare cost per resolution, not cost per seat, because the same logic applies to AI vs BPO staffing.
- If you want the AI to own resolution, compare AI agents such as Aissist AgentMesh™ instead, and redeploy experienced people to the hard cases (upskilling agents for agentic AI).
The verdict: assist makes the seat faster; resolution removes the ticket
Real-time agent assist is a real productivity gain, and it is now mostly a feature of larger platforms that sell seats. That is not a scandal, but it is an incentive, and buyers should price it in. Before renewing, check the owner, the deal status and the platform commitments. Then judge the whole operation on cost per resolution, and buy assist for the job it still does well: briefing experienced people on the hardest cases.
Frequently asked questions
Who owns Level AI now?
Five9 agreed on 5 November 2026 to acquire Level AI for about $325 million in cash, with closing expected in Q4 2026. Five9 says Level AI will also be sold standalone to customers on other contact-center platforms.
Did Salesforce buy Cresta?
Salesforce signed a definitive agreement to acquire Cresta on 2 November 2026. Salesforce did not disclose the price, and closing is expected in Salesforce's fiscal Q1 2028 (February to April 2027).
Which agent assist tools are still independent?
Of the eight reviewed, Balto, Observe.AI, Capacity and AmplifAI were independent as of 13 November 2026. Cresta and Level AI are pending sales, Abstrakt belongs to TCN, and Calabrio ONE is part of Verint.
How much does agent assist software cost?
None of the eight publishes a dollar price as of 13 November 2026. Balto prices per seat, counting every user, and Capacity prices assist per hour of agent time.
What is the difference between agent assist and an AI agent?
Agent assist helps a human handle a conversation; an AI agent handles the conversation itself and escalates when it cannot finish. Assist is measured in handle time, an AI agent in resolution rate.
Is real-time agent assist still needed if an AI agent handles tier 1?
Yes, for a different job: briefing experienced humans on escalations rather than scripting routine answers the AI already resolves.
Changelog
- November 13, 2026 — Added owner and deal status for all eight tools (Five9–Level AI, Salesforce–Cresta, TCN–Abstrakt, Verint–Calabrio), a section on why assist consolidates first, and an assist-vs-resolution cost table. Re-checked prices and G2 ratings.
- October 21, 2026 — Added the agent assist vs AI agent table, cost-per-ticket analysis and FAQ schema; re-verified vendor facts.
- October 5, 2026 — First published.
