HomeScience GlossaryAgentic AI: The Machines That Act on Their Own

Agentic AI: The Machines That Act on Their Own

Agentic AI describes artificial intelligence systems that can pursue goals through independent planning, reasoning, and action, with minimal human oversight.

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Science Glossary · Explore this series
March 20, 2026
Key Takeaways
  • Agentic AI systems plan, reason, and act toward goals independently.
  • Enterprise adoption is accelerating, but over 40% of projects may fail.
  • The term describes a spectrum of autonomy, not a binary category.

Agentic AI describes artificial intelligence systems that can pursue goals through independent planning, reasoning, and action, with minimal human oversight. Unlike conventional AI that responds to a single prompt, agentic systems perceive their environment, decide on a course of action, execute it, and evaluate the result before choosing what to do next.

Why It Matters

Key figure

$7.29 billion

Global agentic AI market value in 2025, projected to reach $139 billion by 2034

The distinction between agentic AI and earlier forms of artificial intelligence is not semantic. Traditional AI predicts. Generative AI creates. Agentic AI does both, then acts on the results. That difference changes what humans delegate to machines and what oversight those machines require.

The commercial stakes are large and growing. Gartner, the technology research firm, predicted in August 2025 that 40% of enterprise applications would embed task-specific AI agents by the end of 2026, up from less than 5% in 2025. The same firm projected that by 2028, AI agents would intermediate more than $15 trillion in business-to-business spending.

Yet deployment carries risk. Gartner also predicted in June 2025 that over 40% of agentic AI projects would be canceled by the end of 2027, citing escalating costs, unclear business value, and inadequate risk controls. Yoshua Bengio, the Turing Award-winning AI researcher at Mila in Montreal, has argued that AI agency, not raw intelligence, poses the real existential threat to safety.

How It Works

Agentic AI systems operate through continuous perception-reasoning-action loops. The system observes its environment (a database, a codebase, a conversation), reasons about the best next step, executes that step, then evaluates the result before deciding what to do next.

Key figure

1995

Year Russell and Norvig formally defined AI in terms of agents

The architecture builds on decades of work. Stuart Russell and Peter Norvig defined an AI agent in their 1995 textbook Artificial Intelligence: A Modern Approach as anything that perceives its environment through sensors and acts upon it through actuators. What changed in the 2020s was the arrival of large language models powerful enough to serve as the reasoning engine inside those agent architectures.

Modern agentic systems typically combine a foundation model (for reasoning and language) with tool access (APIs, databases, web browsers), persistent memory (to track context across sessions), and an orchestration layer that coordinates multiple specialized sub-agents. A coding agent, for instance, reads a task description, breaks it into subtasks, writes code, runs tests, reads error messages, and revises its approach without waiting for human input at each step.

The term "agentic" migrated into AI from psychology. Albert Bandura, the Stanford psychologist, used it to describe human self-directed behavior. Andrew Ng, founder of DeepLearning.AI, popularized the term in the AI context in early 2024. Ng proposed "agentic" as an adjective rather than classifying systems as agents or non-agents, arguing that agency exists on a spectrum rather than as a binary distinction.

Key Context

The governance gap. Singapore's Infocomm Media Development Authority released the world's first governance framework specifically for agentic AI in January 2026. The framework addresses a problem that existing regulations were not built for: the EU AI Act, negotiated before agentic systems proliferated, assumes AI that assists human decisions, not AI that makes and executes decisions independently. The EU's high-risk system rules take effect in August 2026.

The transparency deficit. The 2025 AI Agent Index, published by researchers documenting 30 deployed agent systems, found that 133 of 240 safety-related fields across browser and enterprise agents contained no public information. Only 4 of 30 agents provided agent-specific safety documentation.

FAQ

What is the difference between agentic AI and generative AI?

Generative AI produces content (text, images, code) in response to a prompt and stops. Agentic AI uses generative capabilities as one component within a larger system that plans, acts, evaluates results, and iterates toward a goal without waiting for new instructions at each step.

Can agentic AI systems make mistakes?

Yes, and the consequences differ from conventional AI errors because agentic systems act on their outputs. A 2025 METR study found that experienced developers using AI coding tools were 19% slower than those working without them, despite believing they were 20% faster. That perception gap illustrates how difficult it is to measure the actual impact of autonomous AI tools.

Who coined the term "agentic AI"?

The concept of AI agents dates to Stuart Russell and Peter Norvig's 1995 textbook. The adjective "agentic," borrowed from psychologist Albert Bandura's work on human agency, was popularized in the AI context by Andrew Ng in early 2024 to describe AI systems that act with varying degrees of autonomy.

Is agentic AI regulated?

Governance is emerging but uneven. Singapore published the first dedicated agentic AI governance framework in January 2026. The EU AI Act's high-risk provisions, taking effect in August 2026, will apply to some agentic systems, though the regulation was drafted before such systems became widespread.

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AIOps: How AI Automates IT Operations
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AI Bias: How Language Models Amplify What They Copy

Sources

Fact Check: Claim-by-Claim Verification Verified

All 11 claims verified. Gartner predictions, Russell/Norvig definition, Ng popularization timeline, Singapore governance framework, and AI Agent Index statistics all confirmed against primary sources.

1 Supported
Gartner predicted 40% of enterprise apps would embed AI agents by end of 2026
2 Supported
Gartner projected AI agents would intermediate >$15 trillion in B2B spending by 2028
Confirmed by Gartner IT Symposium/Xpo 2025 and Digital Commerce 360 reporting.
3 Supported
Gartner predicted >40% of agentic AI projects would be canceled by end of 2027
4 Supported
Russell and Norvig defined AI agent in 1995 textbook
AIMA first edition published 1995, Chapter 2 defines agents.
5 Supported
Albert Bandura used "agentic" to describe human self-directed behavior
Well-documented in Bandura's social cognitive theory literature.
6 Mostly supported
Andrew Ng popularized "agentic" in AI context in early 2024
Multiple sources credit Ng. Exact timing aligns with DeepLearning.AI course launch, though the term had limited prior use.
7 Supported
Singapore IMDA released world's first governance framework for agentic AI in January 2026
8 Supported
2025 AI Agent Index found 133 of 240 safety fields contained no public information
9 Supported
Only 4 of 30 agents provided agent-specific safety documentation
Index names ChatGPT Agent, Claude Code, OpenAI Codex, and Gemini 2.5.
10 Mostly supported
Global agentic AI market valued at $7.29 billion in 2025
Fortune Business Insights figure. Market sizing varies by firm but within credible range.
11 Supported
METR study found developers 19% slower with AI coding tools
METR randomized controlled trial, widely reported in 2025.
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