The short answer
Cheapest at 20 seats a month
$0/mo
Notion, Free plan
- Lowest starting price
- $6.67 · Slab
- Free plans
- 7 of 17
- Prices published
- 14 of 17
- Sales-led only
- 3
AI search engines at a glance
Median starting price$12/moHalf start between $9 and $20
Free plan41%41% offer a time-limited trial
Buy online76%Sign up and pay without a sales call
Sales only18%Demo or contact sales to buy
How they charge
What you'd pay at 20 seats a month
- Notion Free$0
- Slab Free$0
- Slack AI Search Pro$175
- Slite Basic$200
- Dashworks Team Plan$240
- Onyx Business$400
- SearchBlox SearchAI SearchAI Single Server (Self-Managed)$2,083
Computed from each tool's published plans, allowances and overage rates.
Every AI search engine, side by side
| Tool | Starts at | Usage price | Free plan | How you buy | Checks | Checked |
|---|---|---|---|---|---|---|
 Notion |
$10/mo yearly | $10/credit | Yes | Both | 6/8 | Oct 29, 2026 |
 Slab |
$6.67/mo yearly | – | Yes | Both | 2/8 | Oct 29, 2026 |
 Slack AI Search |
$7.25/mo yearly | – | Yes | Both | 3/8 | Oct 29, 2026 |
 Slite |
$10/mo yearly | – | – | Both | 7/8 | Oct 29, 2026 |
 Dashworks |
$10/mo yearly | – | – | Both | 7/8 | Oct 29, 2026 |
 Onyx |
$20/mo yearly | – | – | Both | 8/8 | Oct 29, 2026 |
 SearchBlox SearchAI |
$2,000/mo yearly | – | – | Both | 6/8 | Oct 29, 2026 |
 Algolia |
– | – | Yes | Both | 4/8 | Oct 29, 2026 |
 Bloomfire |
– | – | – | Sales-led | 7/8 | Oct 29, 2026 |
 Brave Search API |
– | $5/usd credits per month | Yes | Both | 3/8 | Oct 29, 2026 |
 Coveo |
– | – | – | Both | 5/8 | Oct 29, 2026 |
 Elastic |
– | $0.14/minute | – | Both | 3/8 | Oct 29, 2026 |
 Google Cloud Search / Vertex AI Search |
– | $1.50/queries | Yes | Both | 4/8 | Oct 29, 2026 |
 Guru |
– | – | – | Sales-led | 6/8 | Oct 29, 2026 |
 Kore.ai |
– | – | – | Sales-led | 5/8 | Oct 29, 2026 |
| Lucidworks | – | – | – | – | 0/8 | Oct 29, 2026 |
 You.com |
– | $5/minute | Yes | Both | 5/8 | Oct 29, 2026 |
The tools
NotionNotion is a workspace for docs, databases and projects with built-in AI search, agents and connectors to work apps.$10 /moSlabTeam knowledge base with folders-and-topics organization and a search that pulls from Slab content and connected tools.$6.67 /moSlack AI SearchTeam messaging platform with built-in AI search, a personal AI agent (Slackbot) and workflow automation.$7.25 /moSliteSlite is a team knowledge base with AI search, doc verification and an agent that keeps docs in sync with connected tools.$10 /moDashworksAI assistant that answers workplace questions by searching a team's connected apps live, with citations, in Slack, browser and web app.$10 /moOnyxOnyx is an open source AI chat and enterprise search platform that connects to company apps and works with any LLM, offered as cloud or self-hosted.$20 /moSearchBlox SearchAISearchBlox sells SearchAI, an enterprise search and RAG platform with chatbots and agents, as self-managed licenses or a fully managed service.$2,000 /moAlgoliaAlgolia sells hosted AI search, recommendations and agent tooling that developers add to websites and apps.QuoteBloomfireBloomfire sells an enterprise knowledge management platform and a headless engine that grounds AI agents and search in a company's connected knowledge.QuoteBrave Search APIBrave Search API gives AI agents and apps web search results, LLM-ready context, and cited AI answers from Brave's own search index.$5 /usd credits per monthCoveoAI search platform for enterprise commerce, customer service, websites and workplace, with generative answering and a unified index.QuoteElasticElastic sells Elasticsearch, a search and analytics engine, plus observability and security products, with a pay-per-use Serverless cloud option.$0.14 /minuteGoogle Cloud Search / Vertex AI SearchGoogle Cloud's Agent Search is a pay-per-query service for building search engines and grounded generative answers over a company's own data.$1.50 /queriesGuruGuru is a knowledge layer that connects company sources and gives people and AI tools cited, permission-aware answers, sold through a sales team.QuoteKore.aiKore.ai sells an enterprise AI agent platform ({Artemis}) for customer service, employee work (enterprise search, HR, IT, recruiting) and long-running processes.QuoteLULucidworksQuoteYou.comYou.com sells web search, answer, research and inference APIs for AI applications, priced per call.$5 /minuteHow this list is made
Every price is read from the vendor's own pricing page on the date shown and tied to the line it came from. Tools are ordered by what they cost at a typical volume, then by starting price. No one pays to be listed or ranked.