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Insider One (Agent One, ex-Sirius AI) logo

Insider One (Agent One, ex-Sirius AI)

4.8(1,414 G2 reviews)Singapore, SingaporeFounded 2012

Insider One is the #1 platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak potential and become unstoppable. With AI at its core and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS, Email, Web, App, and Site Search. Insider One provides the ultimate vendor experience, proven in fifteen industries and more than 30 countries for more than a decade, to help teams be first, be focused, and be progressive, redefining what it means to lead in customer engagement. Trusted by 2,000+ customers, including some of the world’s most loved brands like Samsung, L’Oréal, Unilever, Allianz, ING Group, Toyota, Singapore Airlines, and GAP, to accelerate growth, build customer love, and become a market leader. Loved by customers, recognized by analysts, Insider One is the only vendor recognized as the #1 leader in all the capabilities marketing and customer engagement teams need, including AI, Customer Data Management, Cross-Channel Journey Orchestration, and Personalization, offering brands unrivaled product excellence within a single consolidated platform. Accolades include: Leader in the IDC MarketScape: Worldwide AI-Enabled Marketing Platforms for Enterprise Companies 2025 2025 Leader in the Gartner Magic Quadrant for Personalization Engines #1 Customer Choice: 2025 Gartner Voice of the Customer for Personalization Engines Leader in the Forrester Wave for Experience Optimization Platforms, Q4 2024 The Gartner Customers’ Choice for Multichannel Marketing Hubs in 2025 The #1 G2 Leader in 11 categories, including CDP, Personalization Engines, Mobile Marketing, Customer Journey Analytics, SMS Marketing, WhatsApp Marketing, eCommerce Search, and eCommerce Personalization, with a perfect 100/100 user satisfaction score. Today, Insider One is powered by 1,500+ team members representing 50+ nationalities across 30+ offices. The company is woman-founded and predominantly women-owned, with 70% of senior executive roles, including the CEO, CMO, CHRO, and CFO, held by women. Through initiatives such as 100 Cities, 100 Projects, Young Engineers Club, SheCodes, and SheLeads, Insider One continues to expand its positive impact across global communities, driving opportunities, inclusion, education, and equity for this and future generations."

Overall scoreTasks passed divided by all 46 assigned evaluation tasks. Missing or failed executions remain in the denominator.

Not evaluated

G2 task evaluationScores based on G2's standardized task evaluation, separate from buyer reviews.
AccuracyNot available
Policy complianceNot available
G2 buyer reviewsAggregate scores reported by verified G2 reviewers. These do not affect the task-based Overall Score.
Ease of use94
Quality of support96

Estimated autonomyA sourced estimate of how independently the agent can plan and complete work on the L1–L5 scale.

Where this agent sits on the L1–L5 autonomy scale.

L3
L1L2L3L4L5

Skills

Product-specific work documented in reviewed product sources.

Automate Segment Discovery, Journey Creation and Content/Image Generation from Prompts

Insights Agent Answers Performance Questions

Design Agent Converts Figma Files Into Campaigns

Performance claims

Vendor-reported

25% increase in conversion rate in just one week

Product strategyOperating and delivery choices explicitly documented in reviewed product sources.

Forward-deployed engineering
unknown
Self-serve
no
Agent-callable
unknown